surgical instrument

专利摘要:
ENERGY CONTROL PROVISIONS FOR SURGICAL INSTRUMENTS AND BATTERIES. Several modalities are directed to the battery unit for use with surgical instruments. The battery units can comprise a plurality of cells and include a translatable discharge drain. When attached to the surgical instrument, the discharge drain can electrically connect a battery unit anode to a battery unit cathode, for example, through a resistive element, in order to drain the battery unit.
公开号:BR112013006377B1
申请号:R112013006377-7
申请日:2011-09-13
公开日:2020-11-17
发明作者:Wendy A. Kerr；Richard F. Schwemberger；Richard L. Leimbach；Brett E. Swensgard
申请人:Ethicon Endo-Surgery, Inc.；
IPC主号:

专利说明:

BACKGROUND
[0001] An increasing number of surgical instruments are powered by one or more battery cells. Such instruments include a variety of electrically powered implements and can be used in a variety of surgical environments. Battery powered surgical instruments can include motor-driven implements, such as cutters, grapples, and / or staplers, for example. Battery powered surgical instruments may also include implements not powered by a motor, such as radio frequency (RF) cutters / coagulators, ultrasonic cutters / coagulators and / or laser cutters / coagulators, for example. Battery powered instruments are also now used in a number of different surgical environments including, for example, endoscopic environments, laparoscopic environments and open environments.
[0002] Battery powered surgical instruments often use primary cells, which are preloaded and often intended for a single discharge (for example, one use). Using single discharge cells avoids difficulties associated with re-sterilizing and recharging the cells. Primary cells, however, present challenges related to transport, storage and disposal. For example, charged cells can result in hazardous waste if not properly discharged, since they can be used only once and still have a significant amount of charge in them. To mitigate risks, many jurisdictions have regulations that govern the conditions under which cells can be transported and disposed of. It is mandatory that cells and batteries with higher proportions of energy be transported, stored and disposed of with security measures that are more severe and often more expensive. SUMMARY
[0003] Several modalities can be directed to a surgical instrument that has an end actuator and a cable operationally coupled to the end actuator. The cable can have a driver to drive the end actuator and a battery dock that has a protruding member. The surgical instrument may include a battery unit attachable to the battery dock, where the battery unit is in electrical contact with at least one cable and the end actuator when attached to the battery dock. The battery unit may have a compartment and a first anode and a first cathode positioned inside the compartment. The battery unit can also have a translatable discharge drain, where, when attaching the battery unit to the battery dock, the protruding member comes into contact with the discharge drain and the discharge drain moved in relation to the compartment for electrically couple the first anode of the battery unit to the first cathode of the battery.
[0004] In addition, several modalities can be directed to a surgical instrument that has a battery compartment. The surgical instrument may have a protruding member positioned adjacent to the battery compartment of the battery unit. The battery unit may have a compartment and a plurality of cells positioned within the compartment, where at least a portion of the plurality of cells are not electrically connected to each other. The battery unit may have a discharge switch that has an open position and a closed position, where, when in the closed position, the discharge switch electrically couples an anode of the battery unit to a cathode of the battery unit. The discharge switch can be mechanically polarized towards the closed position, where the discharge switch is held in the open position by a non-conductive portion of the compartment. The discharge key can be converted to the closed position by the protruding member when fixing the battery unit inside the battery compartment of the surgical instrument.
[0005] Additionally, several modalities can be directed to a surgical system that has a surgical device that has a battery dock. The surgical system may also have a battery unit, where the battery unit has a first and a second set of cells and a translatable battery drain positioned adjacent to the first and second set of cells. The translatable battery drain can have a first and a second set of contacts; where, in a first position, the first and the second set of contacts are not electrically coupled to the first and the second group of cells. In a second position, the first set of contacts can be electrically coupled to the first set of cells and the second set of contacts is electrically coupled to the second set of cells. The translatable battery drain can convert from the first position to the second position when attaching the battery unit to the battery dock. DRAWINGS
[0006] The aspects of the various modalities are presented with particularity in the attached claims. The various modalities, however, with regard to both the organization and the methods of operation, together with their advantages, can be better understood with reference to the description presented below, considered together with the emanex drawings as follows:
[0007] Figures 1 and 2 are seen in perspective of a modality of a surgical instrument for cutting and fixation.
[0008] Figure 3 is an exploded view of an end actuator modality of the cutting and fixing surgical instrument of figures 1 and 2.
[0009] Figures 4 and 5 are exploded views of a modality of the end and stem actuator of the cutting and fixation surgical instrument of figures 1 and 2.
[00010] Figure 6 is a side view of an end actuator modality of the surgical cutting and fixing instrument of figures 1 and 2.
[00011] Figure 7 is an exploded view of a modality of a motor driven cutter.
[00012] Figures 8 and 9 are a partial perspective view of an embodiment of the cutter cable of figure 7.
[00013] Figure 10 is a side view of an embodiment of the cutter cable of figure 7.
[00014] Figure 11 is a schematic diagram of an electrical circuit modality of a surgical cutting and fixation instrument.
[00015] Figure 12 is a side view of a cable in the form of a powered motorized cutter.
[00016] Figure 13 is a side view of a cable from another embodiment of a powered motorized cutter.
[00017] Figures 14 and 15 show a modality of a locking mechanism for the closing actuator.
[00018] Figure 16 shows another modality of a locking locking mechanism.
[00019] Figures 17 to 22 show another modality of a locking mechanism for the closing actuator.
[00020] Figures 23A and 23B show a universal joint modality ("u joint") that can be used at the point of articulation of a surgical instrument.
[00021] Figures 24A and 24B show a torsion cable modality that can be used at a pivot point of a surgical instrument.
[00022] Figures 25 to 31 illustrate another modality of a motorized two-stroke surgical cutting and fixation instrument with energized assistance.
[00023] Figures 32 to 36 illustrate a modality of a motorized two-stroke surgical cutting and fixation instrument with energized assistance.
[00024] Figures 37 to 40 illustrate a modality of a motorized surgical instrument for cutting and fixing with the aforementioned tactile feedback system.
[00025] Figures 41 and 42 illustrate two states of a variable sensor modality that can be used as the operating motor sensor.
[00026] Figure 43 is a partial cross-sectional view of a surgical instrument with several components removed for clarity.
[00027] Figures 44A and 4B illustrate a locking cam during various states of the operation.
[00028] Figures 45A, 45B and 45C show a locking cam and a gear during various stages of the operation.
[00029] Figure 46 illustrates a modality of a surgical instrument.
[00030] Figures 47A, 47B and 47C schematically illustrate the attachment and detachment of a battery unit to / from an instrument.
[00031] Figure 48 is a graph of the voltage level of a battery unit over time, as measured from the time of attachment to the instrument, according to a non-limiting modality.
[00032] Figure 49A is an embodiment of a simplified circuit diagram of a battery unit comprising a drain.
[00033] Figure 49B is another embodiment of a simplified circuit diagram of a battery unit comprising a drain.
[00034] Figure 50 is an embodiment of a simplified circuit diagram of a battery unit comprising a first drain and a second drain.
[00035] Figures 51 to 53 are seen in perspective of a battery unit modality.
[00036] Figures 54A and 54B illustrate cross-sectional views of a modality of a battery unit including a translatable drain.
[00037] Figure 55 is a perspective view of a modality of a drain.
[00038] Figure 56 illustrates a battery unit attached to a battery dock with several components omitted for clarity.
[00039] Figures 57A and 57B illustrate a battery unit with several components omitted for clarity.
[00040] Figures 58A and 58B illustrate a battery unit with several components omitted for clarity.
[00041] Figure 59 is a perspective view of a single cell battery unit.
[00042] Figures 60A and 60B show views at intervals of the battery unit of figure 59 during various stages of operation, with several components omitted for clarity. DESCRIPTION
[00043] Several modalities are directed to surgical instruments equipped with battery and batteries that comprise characteristics to facilitate the transport, storage of disposal. For example, according to a modality, a battery unit can comprise at least one cell in a compartment that defines a cavity. The battery unit may have a translucent discharge drain positioned adjacent to the cavity. The drain can be moved between an open position and a closed position. A surgical instrument for use with the battery unit may comprise a battery dock, a battery compartment or other battery receiving portion that includes a protruding portion that is received by the battery unit cavity. Prior to attachment to the surgical instrument, the discharge drain may be in the open position. When attaching the battery unit to the surgical instrument, the protruding portion may come into contact with the discharge drain to convert the drain with respect to the compartment. When moved to the closed position, the discharge drain can create a discharge circuit between a battery unit anode, a battery unit cathode and a resistive element, for example. From the time of fixing, the discharge circuit drains the energy from the battery unit. In some modes, the battery unit will be almost discharged or fully discharged after about 24 hours, for example. In general, the use of the discharge drain helps to ensure that the voltage level of the battery unit is at or below acceptable levels for disposal.
[00044] Before describing the modalities of the cells, batteries, battery units and associated surgical instruments, a detailed description of an exemplary modality of a surgical instrument equipped with a battery is provided. Although the surgical instruments described here comprise motorized implements for cutting and stapling, it should be considered that the battery configurations described here can be used with any suitable type of electrical surgical instrument, such as RF cutters, fasteners, staplers, cutters / coagulators, ultrasonic cutters / coagulators and laser cutters / coagulators, for example.
[00045] Figures 1 and 2 are seen in perspective of a modality of a surgical cutting and fixation instrument 10. The illustrated modality is an endoscopic instrument and, in general, the modalities of the instrument 10 described here are cutting endoscopic surgical instruments and fixation. It should be noted, however, that according to other modalities, the instrument can be a non-endoscopic cutting and fixation surgical instrument, such as an open laparoscopic or surgical instrument.
[00046] The surgical instrument 10 shown in Figures 1 and 2 comprises a cable 6, a stem 8, and an articulated end actuator 12 articulated connected to the stem 8 to an articulation pivot 14. An articulation control 16 can be supplied adjacent to the cable 6 to rotate the end actuator 12 over the pivot pivot 14. In the illustrated embodiment, the end actuator 12 is configured to act as an end cutter to hold, separate and staple fabric, although in other embodiments , different types of end actuators can be used, such as end actuators for other types of surgical devices, such as tweezers, cutters, staplers, clamp applicators, access devices, gene / drug therapy devices, ultrasound, laser devices or RF, for example.
[00047] The cable 6 of the instrument 10 may include a closing actuator 18 and a discharge actuator 20 to drive the end actuator 12. It will be recognized that instruments that have end actuators directed to different surgical tasks may have different numbers or types of actuators or other controls suitable for operating end actuator 12. End actuator 12 is shown separately from cable 6 by a rod 8, preferably elongated. In one embodiment, a clinician or an instrument operator 10 can articulate the end actuator 12 in relation to the stem 8, using the articulation control 16, as described in more detail in US patent application No. 11 / 329,020, filed in January 10, 2006, entitled "Surgical Instrument Having An Articulating End Effector", by Geoffrey C. Hueil et al., Which is incorporated herein in its entirety, as a reference.
[00048] The end actuator 12 includes in this example, among other things, a clamp channel 22 and an articulably translatable fixing member, such as a fixed claw 24, which are kept at a spacing that ensures effective stapling or sectioning of the tissue fixed on the end actuator 12. The cable 6 includes a pistol grip 26 towards which a closing actuator 18 is pulled in an articulated manner by the clinician to lead to the fixation or closing of the fixed grip 24 towards the groove. clamps 22 of the end actuator 12 to thereby secure the fabric positioned between the claw of the fixed claw 24 and the groove 22. The discharge driver 20 is further away from the closing actuator 18. When the closing actuator 18 is locked in position closing mechanism, as described in more detail below, the firing trigger 20 can rotate slightly towards the pistol grip 26 so that it can be reached by the operator using a hand. Then the operator can pull the discharge actuator 20 in an articulated way towards the pistol grip 26 to cause stapling and sectioning of fabric fixed on the end actuator 12. In other modalities, different types of fixing members, in addition to the claw grip 24 can be used, such as an opposing claw.
[00049] It will be recognized that the terms "proximal" and "distal" are used here with reference to the act of holding the handle 6 of an instrument 10 by the physician. Therefore, end actuator 12 is distal from the most proximal cable 6. It will be further recognized that, for convenience and clarity, spatial terms such as "vertical" and "horizontal" are used in the present invention in relation to the drawings. However, surgical instruments can be used in many orientations and positions, and these terms are not intended to be limiting and absolute.
[00050] The closing actuator 18 can be activated first. When satisfied with the positioning of the end actuator 12, the physician can retract the closing actuator 18 to the fully closed and locked position adjacent to the pistol grip 26. The discharge actuator 20 can then be actuated. The trigger actuator 20 returns to the open position (shown in figures 1 and 2) when the doctor removes the pressure, as described more fully below. A release button 160 on the handle 6 and, in this example, on the pistol grip 26 of the handle 6, when lowered, can release the locked closing trigger 18.
[00051] Figure 3 is an exploded view of an embodiment of end actuator 12. As shown in the illustrated embodiment, end actuator 12 may include, in addition to previously mentioned channel 22 and fixed claw 24, a cutting instrument 32, a rail 33, a staple cartridge 34 that is removably seated in the groove 22, and a helical screw rod 36. The cutting instrument 32 can be, for example, a knife. The fixed claw claw 24 can be pivoted open and closed at a pivot point 25 connected to the adjacent end of the channel 22. The fixed claw claw 24 can also include a flap 27 at its adjacent end which is inserted into a component of a mechanical locking system (further described below) for opening and closing the fixed jaw 24. When the closing driver 18 is operated, ie pulled by a user of the instrument 10, the fixed jaw 24 can rotate around pivot point 25 to the fixed or closed position. If the fixation of the end actuator is 12 is satisfactory, the operator can activate the trigger trigger 20 which, as explained in more detail above, causes knife 32 and rail 33 to run longitudinally along channel 22, cutting from that mode the fabric fixed inside the end actuator 12. The movement of the rail 33 along the channel 22 causes the staples of the staple cartridge 34 to be directed towards the cut fabric and against the fixed jaw 24 closed, which causes staples join the cut fabric. US patent No. 6,978,921, entitled "Surgical Stapling Instrument Incorporating An E-Beam Firing Mechanism", which is hereby incorporated by reference, provides more details on such two-stroke clamping and cutting instruments. According to various embodiments, a rail 33 can be an integral part of the cartridge 34, so that when knife 32 retracts after the cutting operation, rail 33 does not retract.
[00052] It should be noted that although the instrument modalities 10 described herein employ an end actuator 12 that clips the cut tissue, in other different technical modalities for joining or sealing the cut tissue can be used. For example, end actuators that use RF (radio frequency) energy or adhesives to join the sectioned tissue can also be used. US patent No. 5,810,811, entitled "Electrosurgical Hemostatic Device," which is incorporated herein, by reference, features a cutting instrument that uses RF energy to secure the separate tissue. US patent application No. 11 / 267,811, entitled "Surgical Stapling Instruments Structured For Delivery Of Medical Agents" and US patent application No. 11 / 267,383, entitled "Surgical Stapling Instruments Structured For Pump-Assisted Delivery Of Medical Agents, "both of which are also incorporated here, as a reference, feature cutting instruments that use adhesives to secure the separate fabric. Thus, although the description of the present invention refers to cutting / stapling operations and the like, it must be recognized that this is an exemplary modality, and is not intended to be limiting. Other tissue joining techniques can also be used.
[00053] Figures 4 and 5 are exploded and figure 6 is a side view of an embodiment of end actuator 12 and stem 8. As shown in the illustrated embodiment, stem 8 can include an adjacent closing tube 40 and a distal closing tube 42 pivotally connected by pivot connections 44. The distal closing tube 42 includes an opening system 45 into which the flap 27 in the fixed claw 24 is inserted in order to open and close the fixed claw 24 , as further described below. Arranged within the closing tubes 40, 42 can be an adjacent structuring tube 46. Arranged within the adjacent structuring tube 46 can be a main (or adjacent) rotational drive shaft 48 that communicates with a secondary (or distal) drive shaft 50 via a set of bevel gears 52. The secondary drive shaft 50 is connected to a drive gear 54 that couples to an adjacent drive gear 56 of the helical screw rod 36. When the main drive shaft 48 is rotated through the actuation of the trigger actuator 20 (as explained in more detail below), the chamfer gear assembly 52a-c causes the secondary actuation rod 50 to rotate, which in turn, due to the engagement of the actuation gears 54 , 56, makes the helical screw rod 36 rotate, which causes the knife / rail drive member 32 to run longitudinally through channel 22 to cut which or tissue trapped within end actuator 12. Vertical bevel gear 52b can seat and pivot in an opening 57 at the distal end of adjacent structuring tube 46. A distal structuring tube 58 can be used to close secondary drive shaft 50 and drive gears 54, 56. Collectively, the main drive shaft 48, the secondary drive shaft 50, and the pivot assembly (for example, the bevel gear assembly 52a-c) are sometimes referred to in the present invention as the " main drive shaft assembly. "
[00054] A bearing 38 is threaded on helical screw 36. Bearing 36 is also connected to knife 32. When helical screw 36 rotates forward, bearing 38 passes through helical screw 36 distally, driving the cutting instrument 32 and, in the process, rail 33 performs the cutting / stapling operation. The rail 33 can be produced from, for example, plastic, and can have an inclined distal surface. As the track 33 passes through the channel 22, the sloping front surface can push up or activate the clips on the clip cartridge 34 through the fixed fabric and against the fixed claw 24. The fixed claw 24 turns the clamps, thereby stapling the cut fabric. When knife 32 is retracted, scalpel 32 and rail 33 can be disengaged, thus leaving rail 33 at the distal end of channel 22.
[00055] Because of the lack of feedback from users for the cutting / stapling operation, there is a lack of general acceptance among doctors of motor-driven surgical instruments where the cutting / stapling operation is performed simply by pressing a button . On the contrary, several modalities can provide a motor driven cutter with feedback from users of the positioning, force and / or position of the cutting instrument on the end actuator.
[00056] Figures 7 to 10 illustrate a modality of a motor-driven cutter and, in particular, the cable 6 thereof, which provides feedback to the user regarding the implantation and loading force of the cutting instrument on the end actuator. In addition, the modality can use energy supplied by the user in retracting trigger trigger 20 to energize the device (a mode called "energy aided"). As shown in the illustrated embodiment, cable 6 includes outer lower side parts 59, 60 and outer upper side parts 61, 62 that fit together to form the exterior of cable 6 in general. A battery 64, such as a Li-ion battery ion, can be provided in a battery dock 63. In some embodiments, battery 64 is provided in the pistol grip portion 26 of cable 6. Although battery 64 is illustrated as containing multiple cells connected together, it should be considered that battery 64, in some embodiments, may include a single cell. The battery 64 can power a motor 65 disposed in an upper portion of the pistol grip portion 26 of the cable 6. According to various modalities, the motor 65 can be a brushed direct current motor, which has a maximum rotation of approximately 5,000 RPM. The motor 65 can drive a 90 ° bevel gear set 66 comprising a first bevel gear 68 and a second bevel gear 70. The bevel gear set 66 can drive a planet gear set 72. The planet gear set 72 may include a pinion gear 74 connected to a drive shaft 76. Pinion gear 74 can drive an annular coupling gear 78 that drives a helical gear drum 80 via a drive rod 82. A ring 84 can be threaded onto the helical gear drum 80. Therefore, when the motor 65 spins, the ring 84 is forced to move along the helical gear drum 80, via the bevel gear set 66, the planetary gear set 72 and the gear ring 78, interposed there.
[00057] Cable 6 may also include a motor operating sensor 110 in communication with trigger trigger 20 to detect when trigger trigger 20 has been pulled (or "closed") against the pistol grip portion 26 cable 6 by the operator to thus activate the cut / staple operation by end actuator 12. Sensor 110 can be a proportional sensor, such as a rheostat or a variable resistor. When trigger trigger 20 is pulled, sensor 110 detects movement, and sends an electrical signal indicative of the voltage (or power) to be supplied to motor 65. When sensor 110 is a variable resistor or similar, the rotation of the motor 65 can generally be proportional to the amount of movement of trigger trigger 20. That is, if the operator pulls or closes trigger trigger 20 just a little, the engine speed 65 is relatively low. When trigger trigger 20 is pulled out completely (or is in the fully closed position), the engine speed 65 is at its maximum. In other words, the stronger the user pulls the trigger trigger 20, the greater the voltage applied to the motor 65, generating higher rotation rates.
[00058] Cable 6 may include an intermediate part of cable 104 adjacent to the upper portion of trigger trigger 20. Cable 6 may also comprise a bias spring 112 connected between columns in the intermediate part of cable 104 and trigger trigger 20 The bias spring 112 can place trigger trigger 20 in its fully open position. In this way, when the operator releases trigger trigger 20, bias spring 112 will pull trigger trigger 20 into its open position, thus removing the actuation of sensor 110, and stopping motor rotation 65. In addition, because of the polarization spring 112, any time a user closes the trigger 20, he will feel resistance to the closing operation, thus providing the user with information related to the amount of rotation exerted by the motor 65. Additionally, the operator can for the retraction of the trigger actuator 20 to thus remove the force of the sensor 100, to stop the motor 65. Thus, the user can stop the implantation of the end actuator 12, thus providing a measure of control of the operation cutting / fixing to the operator.
[00059] The distal end of the helical gear drum 80 includes a distal drive rod 120 that drives a ring gear 122, which corresponds to a pinion gear 124. Pinion gear 124 is connected to the main drive shaft 48 of the main drive shaft assembly. In this way, the rotation of the motor 65 causes the main drive shaft assembly to rotate, which causes the end actuator 12 to act, as described above.
[00060] Ring 84 threaded to the drum with helical gear80 can include a column 86 which is arranged within a slot 88 of an arm provided with slits 90. The arm provided with slits 90 has an opening 92 at its opposite end 94 which it receives a pivot pin 96 which is connected between the outer side parts of the cable 59, 60. The pivot pin 96 is also arranged through an opening 100 in the trigger driver 20 and an opening 102 in the intermediate part of the cable 104.
[00061] In addition, cable 6 may include an engine reversal (or limit switch) sensor 130 and an engine stop (or limit switch) sensor 142. In several embodiments, the engine reversal sensor motor 130 can be a limit switch located at the distal end of the helically geared drum 80 so that the threaded ring 84 on the helical geared drum 80 contacts and activates the reversal sensor of the motor 130 when the ring 84 reaches the distal end of the drum with helical gear 80. Motor reversal sensor 130, when activated, sends a signal to motor 65 to reverse its direction of rotation, thereby removing knife 32 from end actuator 12 after the cutting operation.
[00062] The engine stop sensor 142 can be, for example, a normally closed limit switch. In various embodiments, it can be located at the adjacent end of the helical gear drum 80 so that ring 84 activates key 142 when ring 84 reaches the adjacent end of helical gear drum 80.
[00063] In operation, when an operator of instrument 10 pulls the trigger trigger 20, sensor 110 detects the position of trigger trigger 20 and sends a signal to motor 65 to generate rotation of motor 65 forward, for example , at a rate proportional to the force that the operator pulled the trigger driver 20 backwards. The forward rotation of the motor 65, in turn, rotates the annular gear 78 present at the distal end of the planetary gear assembly 72, thereby rotating the helical gear drum 80, and causing the ring 84 to be threaded on the gear drum helical gear 80 moves distally along said helical gear drum 80. Rotating the helical gear drum 80 also directs the main drive shaft assembly as described above which, in turn, leads to the positioning of the knife 32 on the actuator. That is, the knife 32 and the rail 33 are driven to cross the channel 22 longitudinally, thus cutting the fabric attached to the end actuator 12. In addition, the stapling operation of the end actuator 12 is carried out in modalities in which a stapler-type end actuator is used.
[00064] When the cutting / stapling operation of end actuator 12 is finished, ring 84 on the helical gear drum 80 will have reached the distal end of the helical gear drum 80, thus causing the motor reversal sensor 130 is activated, which sends a signal to motor 65 to cause motor 65 to reverse its rotation. This in turn causes the knife 32 to retract and also causes the ring 84 on the helical gear drum 80 to move back to the adjacent end of the helical gear drum 80.
[00065] The intermediate part of the cable 104 includes a shoulder at the rear 106 that mates with the split arm 90, as best shown in figures 8 and 9. The intermediate part of the cable 104 also has a forward movement lock 107 which is coupled to the trigger actuator 20. The movement of the split arm 90 is controlled, as explained above, by the rotation of the motor 65. When the split arm 90 rotates counterclockwise (CCW) while the ring 84 goes from the end adjacent the drum with helical gear 80 to the distal end, the intermediate part of the cable 104 will be free to rotate counterclockwise. In this way, while the user pulls the trigger 20, the trigger 20 will engage the forward movement block 107 of the cable intermediate piece 104, causing the cable intermediate piece 104 to rotate counterclockwise . Due to the coupling of the shoulder at the rear 106 to the split arm 90, however, the intermediate part of the cable 104 will be able to rotate only in a counterclockwise direction to the point allowed by the split arm 90. Thus, if the motor 65 stops rotate for some reason, the split arm 90 will stop rotating and the user will no longer be able to pull the trigger trigger 20 because the middle part of the cable 104 will not be free to rotate counterclockwise because of the split arm 90 .
[00066] Figures 41 and 42 illustrate two states of a variable sensor modality that can be used as the operating motor sensor 110. The sensor 110 may include a face portion 280, a first electrode (A) 282, a second electrode (B) 284, and a compressible dielectric material 286 (for example, EAP) between electrodes 282, 284. The sensor 110 can be positioned so that face portion 280 contacts the trigger driver 20 when retracted. Consequently, when the trigger driver 20 is retracted, the dielectric material 286 is compressed, as shown in figure 42, so that the electrodes 282, 284 are close together. Since the distance "b" between electrodes 282, 284 is directly related to the impedance between electrodes 282, 284, the greater the distance, the greater the impedance, and the shorter the distance, the lower the impedance. In this way, the amount of compression of the dielectric material 286 caused by the retraction of trigger trigger 20 (denoted as "F" force in figure 42) is proportional to the impedance between electrodes 282 and 284, which can be used to proportionally control the motor 65 .
[00067] The components of an exemplary closing system for closing (or fixing) the fixed claw 24 of the end actuator 12 by retracting the closing actuator 18 are also shown in figures 7 to 10. In the illustrated embodiment, the closing system includes a yoke 250 connected to the closing actuator 18 by a pin 251 which is inserted through aligned openings in both the closing actuator 18 and the fork 250. A pivot pin 252, around which the pivot closing actuator 18, is inserted through another opening in the closing actuator 18 which is offset from where the pin 251 is inserted in the closing actuator 18. In this way, the retraction of the closing actuator 18 causes the upper part of the closing actuator 18, to which the fork 250 is attached via pin 251, rotate counterclockwise. The distal end of the fork 250 is connected, through a pin 254, to a first closing bracket 256. The first closing bracket 256 connects to a second closing bracket 258. Collectively, closing brackets 256, 258 define a opening in which the adjacent end of the adjacent closing tube 40 (see figure 4) is seated and maintained so that the longitudinal movement of the closing brackets 256, 258 generates longitudinal movement through the adjacent closing tube 40. Instrument 10 also includes , a closing rod 260 disposed within the adjacent closing tube 40. The closing rod 260 may include an opening 261 within which a column 263 in one of the outer parts of the cable, such as the outer lower side part 59 in the illustrated embodiment , is arranged to connect the closing rod 260 to the cable 6 in a fixed manner. In this way, the adjacent closing tube 40 is able to move longitudinally in in relation to the closing rod 260. The closing rod 260 may also include a distal collar 267 that fits within a cavity 269 in the adjacent structuring tube 46 and is held there by a cap 271 (see figure 4).
[00068] During operation, when the fork 250 rotates due to the retraction of the closing actuator 18, the closing supports 256 and 258 cause the closing tube 40 to move distally (for example, moving away from the end of the cable of the instrument 10), which causes the distal closing tube 42 to move distally, which in turn causes the fixed claw 24 to rotate around the pivotal point 25 and to the clamped or closed position. When the closing driver 18 is unlocked from the locked position, the adjacent closing tube 40 is forced to slide proximally, which causes the distal closing tube 42 to slide proximally, which, due to the flap 27 being inserted in the opening 45 of the distal closing tube 42, causes the fixed claw 24 to rotate around the pivot point 25 to the open or loose position. In this way, by retracting and locking the closing actuator 18, an operator can secure the fabric between the fixed claw 24 and the groove 22 and can loosen the fabric after the cutting / stapling operation by unlocking the closing actuator 18 from the locked position .
[00069] Figure 11 is a schematic diagram of a modality of an electrical circuit of instrument 10. When an operator initially pulls trigger trigger 20 after locking trigger lock 18, sensor 110 is activated allowing current to flow through his. If the normally open switch 130 of the motor reversal sensor is open (meaning that the end actuator end of stroke has not been reached), the current will flow to a single-pole, double-actuated relay 132. reversal of motor 130 is not closed, coil 134 of relay 132 will not be energized, so relay 132 will be in its non-energized state. The circuit also includes a cartridge lock sensor switch 136. If end actuator 12 includes a staple cartridge 34, the sensor switch 136 will be in the closed state, allowing current to flow. Otherwise, if the end actuator 12 does not include a clamp cartridge 34, the sensor switch 136 will be open, thus preventing battery 64 from feeding motor 65. As discussed in more detail below, when battery 64 is inserted in the instrument 10, a resistive element 65 can be connected to the electrical circuit to discharge the battery 64.
[00070] When the staple cartridge 34 is present, the sensor switch 136 is closed, which energizes a single pole relay and single drive 138. When relay 138 is energized, current flows through relay 138, through the sensor variable resistor 110 to motor 65 through a double pole relay and double drive 140, thus energizing motor 65 and allowing it to rotate in a progressive direction.
[00071] When the end actuator 12 reaches the end of its travel, the motor reversal sensor 130 will be activated, thus closing the switch 130 and energizing relay 132. This causes relay 132 to assume its energized state ( not shown in figure 11), which causes the current to bypass the cartridge locking sensor switch 136 and variable resistor 110 and instead causes the current to flow into the double pole and double actuated relay normally closed 140 and back to motor 65, but through relay 140, which causes motor 65 to reverse its rotational direction.
[00072] Because the motor sensor switch 142 is normally closed, current will flow back to relay 132 to keep it energized until switch 142 opens. When the knife 32 is completely retracted, the sensor switch of the stop motor 142 is activated, causing the switch 142 to open, thereby removing power from the motor 65.
[00073] In other modalities, instead of a proportional type 110 sensor, an on-off type sensor can be used. In such modalities, the rate of rotation of the engine 65 would not be proportional to the force applied by the operator. Instead, engine 65 would generally rotate at a constant rate. The operator, however, would still experience a retraining of the force, since the trigger driver 20 is engaged with the gear drive train.
[00074] Figure 12 is a side view of the cable 6 of a motorized cutter energized according to another modality. The modality of figure 12 is similar to that of figures 7 to 10 except that in the embodiment of figure 12, there is no arm 90 with slots connected to the threaded ring 84 on the helical gear drum 80. Instead, in the modality of Fig. 12, ring 84 includes a sensor portion 114 that moves with ring 84 as ring 84 advances downward (and back) on the helically geared drum 80. Sensor portion 114 includes a notch 116. The reversing sensor motor 130 may be located at the distal end of the notch 116 and the engine stop sensor 142 may be located at the adjacent end of the notch 116. As ring 84 moves below the drum with helical gear 80 (and back), the sensor portion 114 moves with it. In addition, as shown in figure 12, the intermediate piece 104 may have an arm 118 that extends into the notch 116.
[00075] In operation, as an operator of instrument 10 retracts trigger trigger 20 towards pistol grip 26, motor operation sensor 110 detects movement and sends a signal to energize motor 65, which causes , among other things, the 80 helical gear drum rotates. As the helical gear drum 80 rotates, the threaded ring 84 on the helical gear drum 80 moves forward (or retracts, depending on the rotation). In addition, due to the act of pulling the trigger trigger 20, the intermediate piece 104 rotates counterclockwise with the trigger trigger 20 due to the blocking of the forward movement 107 that engages the trigger trigger 20. The rotation in the direction counterclockwise of the intermediate piece 104 causes the arm 118 to rotate counterclockwise with the sensor portion 114 of the ring 84 so that the arm 118 is arranged in the notch 116. When the ring 84 reaches the distal end of the drum with worm gear 80, arm 118 will come into contact and thus activate engine reversal sensor 130. Similarly, when ring 84 reaches the adjacent end of worm gear drum 80, arm 118 will contact and activate thus the sensor of the stop mechanism 142. These actions can reverse and stop the motor 65, respectively, as described above.
[00076] Figure 13 is a side view of the cable 6 of a motorized cutter powered according to another modality. The embodiment of figure 13 is similar to that of figures 7 to 10 with the exception that in the embodiment of figure 13, there is no gap in the arm 90. Instead, the ring 84 threaded on the drum with helical gear 80 includes a vertical channel 126 Instead of a slot, the arm 90 includes a column 128 which is arranged in channel 126. As the helical gear drum 80 rotates, the threaded ring 84 on the helical gear drum 80 advances (or retracts, depending on the rotation). The arm 90 rotates counterclockwise as the ring 84 advances because the column 128 is arranged in the channel 126, as shown in figure 13.
[00077] As mentioned above, when using a two-stroke motorized instrument, the operator first pulls back and locks the closing actuator 18. Figures 14 and 15 show a modality of a locking mechanism of the closing actuator 18 for lock the closing actuator 18 on the pistol grip portion 26 of the cable 6. In the illustrated embodiment, the pistol grip portion 26 includes a hook 150 that is split to rotate counterclockwise around a pivot point 151 by a torsion spring 152. In addition, the closing actuator 18 includes a closing bar 154. As the operator pulls the closing actuator 18, the closing bar 154 engages an angled portion 156 of the hook 150 rotating, thus, the hook 150 upwards (or clockwise in figures 14 to 15) until the closing bar 154 passes completely through the inclined portion 156, into a recessed notch 158 of the hook 150, which locks the closing actuator 18 in place. The operator can release the closing actuator 18 by pressing a release slide button 160 on the rear or opposite of the pistol grip portion 26. Pressing the release slide button 160 rotates the hook 150 clockwise so that the closing bar 154 is released from the recessed notch 158.
[00078] Figure 16 shows another locking mechanism for the closing actuator according to various modalities. In the embodiment of figure 16, the closing actuator 18 includes a wedge 160 provided with an arrowhead portion 161. The arrowhead portion 161 is oriented downwards (or clockwise) by a spring. leaf 162. Wedge 160 and leaf spring 162 can be produced from, for example, molded plastic. When the closing driver 18 is retracted, the arrowhead portion 161 is inserted through an opening 164 in the pistol grip portion 26 of the cable 6. A lower chamfered surface 166 of the arrowhead portion 161 engages a lower side wall 168 of opening 164, forcing the arrowhead portion 161 to rotate counterclockwise. Eventually, the lower chamfered surface 166 passes completely through the lower side wall 168, removing the counterclockwise sense force from the arrowhead portion 161, causing the lower side wall 168 to slide into a locked position in a notch 170 behind the arrowhead portion 161.
[00079] To unlock the closing trigger 18, a user presses a button 172 on the opposite side of the closing trigger 18, causing the arrowhead portion 161 to rotate counterclockwise and allowing the portion arrowhead 161 slide out of opening 164.
[00080] Figures 17 to 22 show another modality of a locking mechanism for the closing actuator. As shown in this embodiment, the closing driver 18 includes a flexible longitudinal arm 176 that includes a side pin 178 that extends therefrom. The arm 176 and the pin 178 can be produced from molded plastic, for example. The pistol grip portion 26 of the cable 6 includes an opening 180 with a laterally extending wedge 182 disposed therein. When closing actuator 18 is retracted, pin 178 engages wedge 182 and pin 178 is forced downward (for example, arm 176 is rotated clockwise) by the bottom surface 184 of wedge 182, as shown in the figures 17 and 18. When pin 178 passes completely through the bottom surface 184, the clockwise force on arm 176 is removed, and pin 178 is rotated counterclockwise so that pin 178 is arranged in a notch 186 behind the wedge 182, as shown in figure 19, thus locking the closing actuator 18. The pin 178 is additionally held in place by the flexible stop 188 extending from the wedge 184.
[00081] To unlock the closing actuator 18, the operator can also tighten the closing actuator 18, causing pin 178 to engage an inclined rear wall 190 of opening 180, forcing pin 178 upward after the stop flexible 188, as shown in figures 20 and 21. Pin 178 is then free to go out of an upper channel 192 in opening 180 so that the closing actuator 18 is no longer attached to the pistol grip portion 26, as shown in figure 22.
[00082] Figures 23A-B show a universal joint ("u-joint") 195 that can be used at the point of articulation of a surgical instrument, such as instrument 10. The second part 195-2 of the u-joint 195 rotates in a horizontal plane on which the first piece 195-1 rests. Figure 23A shows the u-joint 195 in a linear orientation (180 °) and figure 23B shows the u-joint 195 in an approximately 150 ° orientation. U-joint 195 can be used instead of bevel gears 52a-c (see figure 4, for example) at pivot point 14 of the main drive shaft assembly to pivot end actuator 12. Figures 24A-B show a torsion cable 197 that can be used instead of bevel gears 52a-ce of the u-joint 195 to articulate end actuator 12.
[00083] Figures 25 to 31 illustrate another modality of a powered two-stroke powered cutting and clamping surgical instrument 10. The mode of figures 25 to 31 is similar to that of figures 6 to 10 with the exception that instead of the helical geared drum 80, the mode of figures 25 to 31 includes an alternate gear drive assembly. The embodiment of figures 25 to 31 includes a gearbox assembly 200 including several gears arranged in a frame 201, where the gears are connected between planetary gear 72 and pinion gear 124 at the adjacent end of the drive shaft 48. As further explained below, the gearbox set 200 provides feedback to the user via the trigger actuator 20 with respect to the positioning and loading force of the end actuator 12. In addition, the user can power the system through the set of gearbox 200 to assist in positioning the end actuator 12. In this sense, as well as the modalities described above, the modality of figures 25 to 31 is another powered motorized instrument 10 that provides feedback to the user regarding the loading force experienced by the cutting instrument 32.
[00084] In the illustrated embodiment, the trigger actuator 20 includes two parts: a main structural part 202 and a stiffening portion 204. The main body portion 202 can be produced from plastic, for example, and the hardening portion 204 it can be produced from a more rigid material, such as metal. In the illustrated embodiment, the hardening portion 204 is adjacent to the main body portion 202, but according to other embodiments, the hardening portion 204 can be arranged within the main body portion 202. A pivot pin 207 can be inserted via openings in trigger parts 202 and 204 and may be the point around which trigger trigger 20 rotates. In addition, a spring 222 can guide the trigger actuator 20 to rotate in a counterclockwise direction. The spring 222 may have a distal end connected to a pin 224 which is connected to parts 202, 204 of the trigger actuator 20. The adjacent end of the spring 222 can be connected to one of the lower outer side parts of the cable 59, 60.
[00085] In the illustrated embodiment, both the main body part 202 and the hardening portion 204 include gear portions 206, 208 (respectively) in their upper end portions. The gear portions 206, 208 engage a gear in the gearbox assembly 200, as explained below, to direct the main drive shaft assembly and provide feedback to the user regarding the positioning of the end actuator 12.
[00086] The gearbox assembly 200 may include, as shown in the illustrated embodiment, six (6) gears. A first gear 210 of gearbox assembly 200 engages gear portions 206, 208 of trigger trigger 20. Furthermore, first gear 210 engages a second smaller gear 212, the second smaller gear 212 being coax with a third gear major 214. Third gear 214 engages a fourth minor gear 216, the fourth minor gear 216 being coaxial with a fifth gear 218. Fifth gear 218 is a 90 ° chamfered gear that engages a corresponding 90 ° chamfered gear 220 (best shown in figure 31) which is connected to the pinion gear 124 which directs the main drive shaft 48.
[00087] In operation, when the user retracts trigger trigger 20, a motor functioning sensor (not shown) is activated, which can provide a signal for the motor 65 to rotate at a rate proportional to the extension or force with the which the operator is retracting trigger trigger 20. This causes engine 65 to rotate at a speed proportional to the sensor signal. The sensor is not shown for this mode, but it can be similar to the engine 110 operating sensor described above. The sensor may be located on cable 6 so that it is pressed when trigger trigger 20 is retracted. In addition, instead of a proportional type sensor, an on / off type sensor can be used.
[00088] Rotation of motor 65 causes bevel gear 66, 70 to rotate, which causes planetary gear 72 to rotate, which causes ring gear 122 to rotate through drive shaft 76 . The ring gear 122 is interlaced with the pinion gear 124, which is connected to the main drive shaft 48. In this way, the rotation of the pinion gear 124 directs the main drive shaft 48, which generates the drive of the cutting operation / stapling of end actuator 12.
[00089] The forward rotation of the pinion gear 124, in turn, causes the bevel gear 220 to rotate, which causes the first gear 210 to rotate through the rest of the gears of the gearbox assembly 200. The first gear 210 engages the gear portions 206, 208 of the trigger actuator 20, thereby causing the trigger actuator 20 to rotate counterclockwise when motor 65 provides forward direction to end actuator 12 (and rotate counterclockwise when motor 65 rotates in reverse to retract end actuator 12). In this way, the user perceives feedback regarding the loading force and the positioning of the end actuator 12 through the user's grip on the trigger actuator 20. In this way, when the user retracts the actuator actuator 20, the operator will feel a resistance related to the load force felt by the end actuator 12. Similarly, when the operator releases the trigger actuator 20 after the cutting / stapling operation so that it can return to its original position, the user will feel a force of clockwise rotation of trigger trigger 20 which is generally proportional to the reverse speed of motor 65.
[00090] It should also be noted that in this mode the user can apply force (either instead or in addition to the motor force 65) to drive the main drive shaft assembly (and consequently the cutting / stapling operation of the actuator) end 12) by retracting trigger trigger 20. That is, retracting trigger trigger 20 causes gear portions 206, 208 to rotate counterclockwise, which causes gearbox assembly gears of gear 200 rotate, thereby causing pinion gear 124 to rotate, which causes the main drive shaft 48 to rotate.
[00091] Although not shown in figures 25 to 31, instrument 10 can also include sensors for reversing the engine and stopping the engine. As described above, the reverse motor and stop motor sensors can detect, respectively, the end of the cutting stroke (complete positioning of the knife 32 and the rail 33) and the end of the retraction operation (complete retraction of the knife 32). A circuit similar to that described above with respect to figure 11 can be used to properly power the motor 65.
[00092] Figures 32 to 36 illustrate another modality of a powered two-stroke powered cutting and clamping surgical instrument 10. The mode of figures 32 to 36 is similar to that of figures 25 to 31 with the exception that in the mode of figures 32 to 36, trigger trigger 20 includes a lower portion 228 and an upper portion 230. Both portions 228, 230 they are connected to and revolve around a pivot pin 207 which is arranged in each portion 228,230. The upper portion 230 includes a gear portion 232 that engages the first gear 210 of the gearbox assembly 200. The spring 222 is connected to the upper portion 230 so that the upper portion is oriented to rotate clockwise. The upper portion 230 may also include a lower arm 234 that contacts an upper surface of the lower portion 228 of the trigger trigger 20 so that when the upper portion 230 rotates clockwise, the lower portion 228 also rotates in clockwise, and when the lower portion 228 rotates counterclockwise the upper portion 230 also rotates counterclockwise. Similarly, the lower portion 228 includes a rotational stop 238 that fits into a lower shoulder of the upper portion 230. Thus, when the upper portion 230 rotates counterclockwise, the lower portion 228 also rotates counterclockwise. , and when the lower portion 228 rotates clockwise, the upper portion 230 also rotates clockwise.
[00093] The illustrated mode also includes the engine operating sensor 110, which communicates a signal to the engine 65 which, in various modalities, can cause the engine 65 to rotate at a speed proportional to the force applied by the operator when retracting the trigger trigger 20. Sensor 110 can be, for example, a rheostat or some other variable resistance sensor, as explained above. In addition, instrument 10 may include a motor reversal sensor 130 that is activated or switched when it contacts the front face 242 of the upper portion 230 of trigger trigger 20. When activated, the motor reversal sensor 130 sends a signal to engine 65 to reverse the direction. In addition, instrument 10 may include a motor stop sensor 142 that is activated or actuated when it comes into contact with the lower portion 228 of trigger trigger 20. When activated, the motor stop sensor 142 sends a signal to stop the reverse engine rotation 65.
[00094] In operation, when an operator retracts the closing actuator 18 to the locked position, the trigger actuator 20 is slightly retracted (through mechanisms known in the art, including US patent No. 6,978,921, entitled "Surgical Stapling Instrument Incorporating An E-Beam Firing Mechanism "and US Patent No. 6,905,057, entitled" Surgical Stapling Instrument Incorporating A Firing Mechanism Having A Linked Rack Transmission ", both of which are incorporated by reference), so that the user can hold trigger trigger 20 to initiate the cutting / stapling operation, as shown in figures 32 and 33. At this time, as shown in figure 33, gear portion 232 of the upper portion 230 of trigger trigger 20 is moves in engagement with the first gear 210 of gearbox assembly 200. When the operator retracts trigger trigger 20, according to various modalities, trigger trigger 20 can rotate air a little, such as five degrees, before activating the engine 110 operating sensor, as shown in figure 34. Activating sensor 110 causes engine 65 to rotate forward at a rate proportional to the retraction force applied by the operator. The forward rotation of the motor 65 causes, as described above, the main drive shaft 48 to rotate, which causes the knife 32 on the end actuator 12 to be positioned (for example, it starts to pass through the channel 22). The rotation of the pinion gear 124, which is connected to the main drive shaft 48, causes gears 210 to 220 in the gearbox assembly 200 to rotate. Since the first gear 210 is engaged with the gear portion 232 of the upper portion 230 of the trigger actuator 20, the upper portion 230 rotates counterclockwise, which causes the lower portion 228 to also rotate in a counterclockwise direction. counter-clockwise.
[00095] When knife 32 is fully positioned (for example, at the end of the cutting stroke), the front face 242 of the upper portion 230 activates the motor reversal sensor 130, which sends a signal to the motor 65 to reverse the direction rotational. This causes the main drive shaft assembly to reverse the rotational direction to retract knife 32. Reverse rotation of the main drive shaft assembly causes gears 210 through 220 in the gearbox assembly to reverse direction, that causes the upper portion 230 of the trigger trigger 20 to rotate clockwise, which causes the lower portion 228 of the trigger trigger 20 to rotate clockwise until the front portion 242 of the upper portion 230 activates or activates the engine stop sensor 142 when knife 32 is fully retracted, which causes engine 65 to stop. In this way, the user perceives feedback regarding the positioning of the end actuator 12 through the user's handle on the trigger actuator 20. In this way, when the user retracts the actuator actuator 20, the operator will feel a resistance related to the positioning of the end actuator 12, and in particular, the loading force felt by the knife 32. Similarly, when the operator releases the trigger actuator 20 after the cutting / stapling operation so that it can return to its original position, the user will feel a clockwise rotation force of the trigger actuator 20 which is generally proportional to the reverse speed of the motor 65.
[00096] It should also be noted that in this mode the user can apply force (either instead of or in addition to the motor power 65) to drive the main drive shaft assembly (and consequently the cutting / stapling operation of the actuator) end 12) through the retraction of the trigger actuator 20. That is, the retraction of the trigger actuator 20 causes the gear portion 232 of the upper portion 230 to rotate counterclockwise, which causes the gears of the gear box 200 rotates, thereby turning pinion gear 124, which causes the main drive shaft assembly to rotate.
[00097] The modalities described above employed feedback systems to the user with the aid of energy, with or without adaptive control (for example, with the use of a sensor 110, 130, and 142 outside the closed loop system of the engine, gear actuator and end actuator) for a motorized surgical instrument for two-stroke cutting and clamping. That is, the force applied by the user in the retraction of the trigger actuator 20 can be added to the force applied by the motor 65 because the trigger actuator 20 is attached (directly or indirectly) to the gear drive train between the motor 65 and the main drive shaft 48. In other embodiments, the user can be provided with tactile feedback regarding the position of knife 32 on end actuator 12, but without having trigger trigger 20 engaged in the gear drive train. Figures 37 to 40 illustrate a modality of a motorized surgical instrument for cutting and fixing 10 with the said tactile feedback feedback system.
[00098] In the embodiment illustrated in figures 37 to 40, the trigger actuator 20 may have a lower portion 228 and an upper portion 230, similarly to the instrument 10 shown in figures 32 to 36. Unlike the embodiment of figures 32 to 36 however, the upper portion 230 does not have a gear portion that matches a part of the gear drive train. Instead, instrument 10 includes a second motor 265 with a threaded rod 266 on it. Threaded rod 266 moves longitudinally in and out of motor 265 while motor 265 rotates, depending on the direction of rotation. The instrument 10 also includes an encoder 268 that responds to the rotations of the main drive shaft 48 to translate the incremental angular movement of the main drive shaft 48 (or another component of the main drive assembly) into a corresponding series of digital signals, for example. In the illustrated embodiment, pinion gear 124 includes a proximal drive shaft 270 that connects to encoder 268.
[00099] Instrument 10 also includes a control circuit (not shown), which can be implemented using a microcontroller or some other type of integrated circuit, which receives digital signals from encoder 268. Based on the signals from encoder 268, the control circuit can calculate the positioning stage of knife 32 on end actuator 12. That is, the control circuit can calculate whether knife 32 is fully positioned, completely retracted, or in an intermittent stage. Based on the calculation of the positioning stage of the end actuator 12, the control circuit can send a signal to the second motor 265 to control its rotation to thereby control the reciprocating movement of the threaded rod 266.
[000100] In operation, as shown in figure 37, when the closing trigger 18 is not locked in the closed position, the trigger trigger 20 is rotated away from the pistol grip portion 26 of the cable 6 so that the front face 242 of the upper portion 230 of the trigger actuator 20 does not come into contact with the adjacent end of the threaded rod 266. When the operator retracts the closing actuator 18 and locks it in the closed position, the actuator 20 rotates slightly towards the actuator closing 18 so that the operator can hold the trigger actuator 20, as shown in figure 38. In this position, the front face 242 of the upper portion 230 comes into contact with the adjacent end of the threaded rod 266.
[000101] As the user retracts trigger trigger 20, after an initial rotational amount (for example, 5 degrees of rotation) the motor operating sensor 110 can be activated so that, as explained above, sensor 110 sends a signal to the engine 65 to cause it to rotate at a forward speed proportional to the amount of retraction force applied by the operator to the trigger driver 20. The forward rotation of the engine 65 causes the main drive shaft 48 to rotate through the gear actuator train, which causes knife 32 and rail 33 to descend through channel 22 and cut the tissue trapped in end actuator 12. The control circuit receives output signals from encoder 268 related to speed increments of the main drive rod assembly and sends a signal to the second motor 265 to cause the second motor 265 to rotate, which causes a threaded rod 266 to retract on motor 265. This allows the upper section 230 of the trigger 20 rotate counterclockwise, which allows the lower portion 228 of the trigger trigger to also rotate counterclockwise. Thus, because the reciprocating movement of the threaded rod 266 is related to the rotations of the main drive shaft assembly, the instrument operator 10, through his grip on the trigger actuator 20, feels a tactile feedback regarding the position of the actuator. end 12. The retraction force applied by the operator, however, does not directly affect the direction of the main drive shaft assembly because the trigger driver 20 is not engaged with the gear drive train in this mode.
[000102] Due to the tracking of the incremental rotations of the main drive shaft assembly through the output signals of the encoder 268, the control circuit can calculate when the knife 32 is fully positioned (for example, fully extended). At this point, the control circuit can send a signal to motor 65 to reverse the direction to cause knife 32 to retract. The reverse direction of motor 65 causes the rotation of the main drive shaft assembly to change direction, which it is also detected by encoder 268. Based on the reverse rotation detected by encoder 268, the control circuit sends a signal to the second motor 265 to change the rotational direction so that the threaded rod 266 begins to extend longitudinally. from the motor 265. This movement forces the upper portion 230 of the trigger actuator 20 to rotate clockwise, which causes the lower portion 228 to rotate clockwise. In this way, the operator can experience a clockwise force from the trigger actuator 20, which provides feedback to the operator regarding the retraction position of knife 32 on end actuator 12. The control circuit can determine when knife 32 is completely retracted. At this point, the control circuit can send a signal to motor 65 for rotation.
[000103] According to other modalities, instead of the control circuit determining the position of the knife 32, the motor reversal and motor stop sensors can be used, as described above. In addition, instead of using a proportional sensor 110 to control the rotation of the motor 65, an on / off switch or sensor can be used. In this mode, the operator would not be able to control the engine's rotation rate 65. Instead, he would rotate at a pre-programmed rate.
[000104] Figure 43 is a partial cross-sectional view of a surgical instrument 300 with several components removed for clarity. The surgical instrument 300 has a rack 302 (shown in cross section) for driving an end actuator (not shown). A pinion gear 304 is coupled to rack 302, so that rotation of pinion gear 304 in a counterclockwise direction converts rack 302 distally and rotation of pinion gear 304 in a clockwise direction proximally converts the rack 302. Pinion gear 304 can rotate around an axis 306 and can be driven by a motor that is operationally controlled by a driver (not shown). In one embodiment, pinion gear 304 can be polarized in a first direction 303 by a tilt element 308. Tilt element 308 can be a spring, as illustrated, although any other suitable tilt technique can be used. The surgical instrument 300 may comprise a lever 310 which can be used, for example, if the energy level of the energy source of the surgical instrument falls below sufficient operating levels. In one embodiment, level 310 is generally hidden from the user by a door 312, which can be removed by the user to access lever 310. Lever 310 can be rotated around a pivot 314 in a direction indicated by arrow 316. One locking cam 318 can be attached to lever 310 so that rotation of lever 310 around pivot 314 rotates locking cam 318. In some embodiments, locking cam 318 is unitary with lever 310.
[000105] Figures 44A and 44B illustrate the locking meat 318 during various states of the operation. The locking cam 318 comprises a structural part 320 and a spring portion 322 which can pivot or otherwise flex, with respect to structural part 320, about a joint portion 324. The joint portion 324 may comprise, for example, a living joint. In one embodiment, the structural part 320 and the spring portion 322 are unitary and formed from a single piece of material. The locking cam 318 can define a gap 326 that allows the spring portion 322 to pivot towards the structural part 320. The spring portion 322 can have a tooth 331 which is received by a notch 321 in the structural part 320. In its respective outer peripheries, the structural part 320 may have a first contact surface 328 and a spring portion 322 may have a second contact surface 330. In the closed position (figure 44A), the first contact surface 328 is generally aligned with the second contact surface 330, so that the outer periphery of the locking cam 318 has a generally continuous cam surface. In the open position (figure 44B), the spring portion 322 pivots away from the structural part 320 to increase the gap 326. A gap 332 is created between the first contact surface 328 and the second contact surface 330.
[000106] Now with reference to figures 43, 44A and 44B, when the lever 310 is rotated in the direction indicated by the arrow 316, the locking cam 318 is rotated and the second outer surface 330 of the spring portion 322 first comes into contact with a top surface 342 of the pinion gear 304. As a result of this contact, the spring portion 322 is pivoted towards the structural part 320 to create a generally continuous periphery. As the locking cam 318 continues to rotate, the second contact surface 330 and then the first contact surface 328 exerts force on the pinion gear 304 to overcome the changing force applied by the tilting element 308. As As a result, pinion gear 304 is pushed in the direction indicated by arrow 324 as well as lever 310 is rotated in the direction indicated by arrow 316. The movement of pinion gear 304 uncouples from rack 320 allowing rack 320 to move freely. When the spring portion 322 releases the top surface 342 of the pinion gear 304, it pivots to the open position (figure 44B) to lock the locking meat 318 in place. When in the open position, the locking cam 318 will be prevented from turning in the direction indicated by the arrow 344 (figure 43), due to the engagement of the spring portion 322 with the pinion gear 304.
[000107] Figures 45A, 45B and 45C show a locking cam 418 and a gear 404 during three stages of the operation. Several components have been removed and / or simplified for clarity. As illustrated, the locking meat 418 can be manufactured from a single piece of material. The locking cam 418 comprises a spring portion 422 which is pivoting with respect to a structural part 420. Fig. 45A shows the locking cam 418 in an unengaged position. In that position, a distal portion 423 of the spring portion 422 is separated from the structural portion 420. As illustrated in figure 45B, when the locking cam 418 is rotated in the direction indicated by arrow 416, the spring portion 422 is drained toward the structural part 420 to create a generally continuous periphery that rotates the spring portion 422 and the structural part 420. As the locking cam 418 contacts the central part 442, the pinion gear 404 moves in the direction indicated by arrow 443. As the locking cam 418 continues to turn in the direction indicated by arrow 416, the spring part eventually 422 passes over the central part 442. As shown in figure 45C, when the distal portion 423 of the spring portion 422 separates from the structural part 420, it engages the teeth of the pinion gear 404 to lock the locking cam 418 in an engaged position. Consequently, in various embodiments, while the locking cam 418 can be produced from a single piece of material, it can function as two parts (for example, a cam and a locking mechanism).
[000108] Figure 46 illustrates a modality of a surgical instrument 500. The instrument 500 comprises a cable 502, a pistol grip 501, a driver 504 and an end actuator 505. According to various modalities, the cable 502, the actuator 504 and end actuator 505 can operate in a manner similar to that of the various cables, 6, actuators 18, 20 and end actuators 12 described herein. In addition to, or instead of, the functionality previously described in this document, the 501 end actuator may comprise surgical implements for laser cutting, stapling, cutting and / or coagulation, RF cutting and / or coagulation, cutting and / or coagulation ultrasonic, for example.
[000109] The cable 502 of the instrument 500 can house at least one battery unit 506. The battery unit 506 can comprise a single battery or a plurality of batteries arranged in a series and / or parallel configuration. The cable 502 can comprise a battery dock 508 to which the battery unit 506 can be attached. Battery dock 508 can be any suitable structure for attaching battery unit 506 to instrument 500. For example, battery dock 508 can be a cavity in cable 502 configured to receive at least a portion of battery unit 506, such as illustrated. In other embodiments, the battery dock 508 can be implemented using a variety of other structures. In one embodiment, the battery dock 508 is a column that is received by the battery unit 506. In one embodiment, the pistol handle 501 comprises the battery dock 508. In any event, as discussed in more detail below, the The battery 508 may comprise a protruding portion for interacting with the battery unit 506 when attaching the battery unit 506 to the cable 502. Once attached, the battery unit 506 can be electrically connected to and can power a circuit 514 of the instrument 500. The circuit can be located on cable 502, as shown, on end actuator 505 or any combination of locations within instrument 500. In use, circuit 514 can power the operation of at least one surgical implement on the actuator. end 505. For example, circuit 514 may comprise an electric motor for operating a cutter, fastener, or other electrically powered mechanical device. In addition to, or instead of, an engine, circuit 514 may comprise circuit components suitable for implementing an RF, ultrasonic surgical implement or other type of non-motor powered surgical implement.
[000110] Figures 47A, 47B and 47C schematically illustrate the battery unit 506 and a portion of the instrument 500. The battery unit 506 may comprise a drain that automatically completes a circuit in the battery unit 506 upon attachment to the instrument 500 The drain serves to slowly reduce the load on the 506 battery unit over time. When the 506 battery unit has been sufficiently drained, it can be disposed of as non-hazardous waste, for example. The battery unit 506 may comprise a voltage source 510. In one embodiment, the voltage source 510 is a lithium battery and comprises at least one cell selected from the group consisting of a CR123 cell and a CR2 cell. It should be considered that any suitable voltage source can be used. The battery unit 506 also comprises a drain 512 which is electrically coupled to the voltage source 510 when a switch 516 is closed. The battery unit 506 and the instrument 500 comprise electrically conductive contacts 518, 520, respectively, which are brought into contact when the battery unit 506 is attached to the instrument 500. Figure 47A illustrates the battery in an unsecured position. Switch 516 is in an open position and voltage source 510 may be in a fully charged condition. Figure 47B illustrates that 506 battery unit in a fixed position. The conductive contacts 518 of the battery unit 506 are in electrical communication with the contacts 520 of the instrument, thus allowing the battery unit 506 to supply power to circuit 514 (figure 46). In the fixed position, switch 516 moves to the closed position to electrically connect voltage source 510 to drain 512. Energy will flow from voltage source 510 through drain 512 during operation of the instrument. In other words, drain 512 will be draining the charge from voltage source 510 concurrently as battery unit 506 is providing operational power to instrument 500. As discussed in more detail below, a portion of instrument 500 can interact physically with drain 512 while fixing battery unit 506 to instrument 500 to transition switch 516 from open to closed. Figure 47C illustrates the 506 battery unit in an unfixed position. In one embodiment, switch 516 remains in the closed position to continue to drain voltage source 510 even after battery unit 506 has been detached from instrument 500.
[000111] Figure 48 is a graph 600 of the voltage level of the battery unit 506 over time, as measured from the time of fixing to the instrument 500, according to a non-limiting mode. Graph 600 illustrates the voltage levels of a cell 6 V of the battery unit 506. Graph 600 is merely representative of a modality of the battery unit 506. Bear in mind that whereas Graph 600 illustrates a power supply 6 VDC, the 506 battery unit can supply any suitable voltage, such as 9 VDC, 12 VDC or 18 VDC, for example. As discussed in more detail below, the battery unit 506 can comprise multiple cells arranged in a parallel and / or serial configuration. Graph 600 includes three examples of discharge curves 602, 604, 606. As illustrated by the first discharge curve 602, the voltage of the power source 510 drops below 2.0 volts after about 28 hours. As illustrated by the second discharge curve 604, the voltage of the power source 510 drops below 2.0 volts after about 30 hours. As illustrated by the third discharge curve 606, the voltage of the power source 510 drops below 2.0 volts after about 33 hours. The general shape of the discharge curve may depend, for example, on the activity level of the instrument 500 during the surgical procedure. For example, the instrument associated with the first discharge curve 602 was used more significantly during the surgical procedure than the instrument associated with the discharge curve 606. In any event, drain 512 maintains the voltage level of the battery unit 506 at a level satisfactory for a period of time to ensure that the instrument can be used for its intended purpose during the course of the surgical procedure. For example, in one embodiment, the voltage level of the 506 battery unit is maintained at about 6 volts for approximately 12 hours. After 12 hours, the voltage level gradually decreases to a non-dangerous level. It must be considered that drain 512 can be calibrated to deplete the voltage source more quickly or more slowly.
[000112] In one mode, a resistive element is used to reduce the energy level of the voltage source. Figure 49A is a simplified circuit diagram of a battery unit 616 comprising a drain 612. The battery unit 616 can be attached to an instrument 500, for example, through its contacts 618. In this embodiment, the battery unit 616 comprises a first cluster of cells 610 and a second cluster of cells 611. In one embodiment, the first and second cluster of cells 610, 611 are lithium batteries. The first and second cell clusters 610, 611 can each have a plurality of separate cells 610a, 610b, 611a, 611b arranged in a parallel formation. For example, the first and second cell clusters 610, 611 can each be 6 VDC and arranged in a standard configuration to produce 12 VDC on contacts 618 of the battery unit 616 when fully charged. Cells 610a, 610b, 611a, 611b, however, can be electrically connected to each other in series or parallel, or any other combination thereof.
[000113] In one embodiment, drain 612 comprises a first resistive element 622 and a second resistive element 624. It should be considered that, in some embodiments, the battery unit 616 may comprise, for example, multiple drains 612 each having more or less than two resistive elements or another circuit. In the illustrated embodiment, the first resistive element 622 is coupled through a first anode 626 and a first cathode 628 of the first cluster of cells 610 through a first key 630. The first resistive element 624 can be coupled through a second anode 632 and a second cathode 634 of the second cluster of cells 611 through a second key 636. The first and second keys 630, 636 can be closed when attaching the battery unit 616 to the surgical instrument 500 in order to start draining the first and second cell clusters 610, 611.
[000114] The value of the resistive elements used by drain 612 may vary based on the implementation. In one embodiment, the first resistive element 622 has a resistance in the range of about 90 ohms to about 110 ohms. In one embodiment, the first resistive element 622 has a resistance in the range of about 97 ohms to about 104 ohms. In one embodiment, the 622 resistive element is 102.9 ohms and has a power range of 1 watt. The determination of the required resistance is based at least partially on the capacity of the voltage source, the voltage level of the voltage source and the desired temporal length of the drain curve. For example, in one mode the battery capacity of the first 610 cell cluster is 1400 mAh, the voltage level is 6 VDC and the target drain time is 24 hours. Diving 1400 mAh for 24 hours produces a current of 0.0582 A. Using Ohm's law, 6 V divided by 0.582 A produces a resistance of 102.9 ohms. With a current of 0.583 and a resistance of 102.9 ohms, the energy dissipated by the resistor is .350 W. It should be considered that different voltage levels, battery capacities and desired discharge time will result in different resistance values.
[000115] Figure 49B is a simplified circuit diagram of yet another modality of a battery unit. In figure 49B, a battery unit 660 is attached to a surgical instrument 650 that has multiple contact sets. As illustrated, the surgical instrument 650 has a first set of contacts 652A, 652B and a second set of contacts 654A, 654B. The battery unit 660 has a first set of contacts 656A, 656B and a second set of contacts 658A, 658B configured to employ the contacts of the surgical instrument 650. In the illustrated embodiment, the battery unit 660 comprises a first cell 662 in series with a second cell 664 that supplies power to the surgical instrument 650 through its first set of contacts 652A, 652B. The battery unit 660 may also comprise a third cell 668 in series with a fourth cell 670 that supplies power to the surgical instrument 650 through its second set of contacts 654A, 654B. The first, second, third and fourth cells 662, 664, 668, 670 can each provide any suitable voltage level when fully charged, such as 3 VDC or 6 VDC, for example. In one embodiment, the battery unit 660 supplies a total of about 12 VDC to the surgical instrument 650 when the battery unit is fully charged (for example, about 6 VDC through the first set of contacts 656A, 656B and about 6 VDV through the second set of contacts 658A, 658B). The battery unit 660 can comprise a first drain 672 and a second drain 674. While the first drain 672 and the second drain 674 are schematically illustrated separately in figure 49A, it should be considered that drains 672 and 674 can be implemented on a single circuit board or through any other suitable implementation. The first drain 672 comprises a first resistive element 674 which is connected in a series arrangement with the first and second cells 662, 664 and a first switch 680. The second drain 674 comprises a second resistive element 682 which is connected in an array standard with the third and fourth cells 668, 670 and a second key 684. The first and second keys 680, 684 are shown in an open position. When the first switch 680 is closed (for example, when attaching the battery unit 660 to the surgical instrument 650), current flows from the first and second cells 662, 664 through the first resistive element 678 to discharge those cells. the second key 684 is closed (for example, when attaching the battery unit 660 to the surgical instrument 650), the current flows from the third and fourth cells 668, 670 through the first resistive element 678 to discharge those cells.
[000116] Figure 50 is an embodiment of a simplified circuit diagram of a battery unit 716 comprising a first drain 712 and a second drain 713. The battery unit 716 can be attached to an instrument 500, for example, via of its contacts 718. In this embodiment, the battery unit 716 comprises a first cluster of cells 710, a second cluster of cells 711, and a third cell 714. The first drain 712 comprises a first resistive element 722 and a second resistive element 724 The second drain 713 comprises a third resistive element 726. The resistive elements 722, 724, 726 are coupled to the respective cells using keys 730, 736 and 738. Keys 730, 736 and 738 can be closed when fixing the unit battery 716 to the surgical instrument 500 in order to start draining the first and the second group of cells 610, 611 and the third cell 716. The resistance of the third resistive element 726 it can be similar or different from the resistances of the first and the second resistive element 722, 724. As described above, the resistance of the third resistive element 726 can at least partially depend on the voltage of the third cell 714 and the characteristics of the desired drain curve.
[000117] Figures 51 to 53 are perspective views of a battery unit 800 implementing the schematic of battery unit 616 shown in figure 49. Battery unit 800 may comprise a housing 802 defining an interior cavity 810. While the inner cavity 810 is illustrated in a central portion of the compartment 802, it must be considered that the inner cavity 810 can be positioned in any suitable location. The compartment 802 can be covered by a cover 804 that can be attached to the compartment 802 using one or more mechanical locks 806, 808. Figure 52 illustrates an embodiment of the battery unit 800 with the cover 804 removed to show a plurality of cells 812 in it. Any suitable number and / or type of 812 cells can be used. For example, CR123 and / or CR2 cells can be used. Fig. 53 illustrates an embodiment of battery unit 800 with a portion of compartment 802 removed to reveal cells 812.
[000118] Figures 54A and 54B illustrate cross-sectional views of a battery unit 800 modality including a translatable drain 812. Drain 812 can be positioned inside inner cavity 810 and can be translatable within inner cavity 810 in the directions of arrow 815. Figure 54A shows drain 812 in an open position and figure 54B shows drain 812 in a closed position. Drain 812 can comprise at least two contacts 816, 818. When drain 812 is in the open position, a portion of contacts 816, 818 can touch a non-conductive portion of compartment 802, such as fingers 820, 822. According to several modalities, contacts 816, 818 can be polarized to exert a force against fingers 820, 822 in order to resist the movement of drain 812 in the direction of arrows 815. In addition, in some modalities, fingers 820, 822 can define a or more protuberances or diminished portions, as shown in figures 54A and 54B. The battery unit 800 may also comprise one or more electrodes, such as the first electrode 824 and the second electrode 826. The first and second electrodes 824 and 826 can each be electrically coupled to a cathode or anode of cells contained inside the battery unit 800. In the closed position (figure 54B), contacts 816, 818 are in electrical connection with electrodes 824, 826, thus allowing the voltage source to be discharged through drain 812. As discussed in more details below, drain 812 can be moved from the open to the closed position when attaching the battery unit 800 to a surgical instrument.
[000119] Figure 55 is a perspective view of drain 812 according to a non-limiting embodiment. Contacts 816, 818 of drain 812 can be coupled to a base portion 830 of drain 812. Similarly, contacts 836, 838 of drain 812 can be coupled to base portion 830 of drain 812. According to various modalities, contacts 816, 818 can be electrically connected to each other via a resistive element (not shown) mounted on a circuit board 832. Similarly, contacts 836, 838 can be electrically connected to each other via a resistive element mounted on a circuit board 832. As illustrated, contacts 816, 818, 836, 838 can have a bend or curvature to tilt the contacts toward an outward position when they are internally compacted. In addition, in one embodiment, the distal end of each of the contacts 816, 818, 836, 838 may have an inward-facing section. The base portion 830 may comprise a contact surface 840 that engages the instrument when the battery unit 800 is attached to the instrument. Through this coupling, drain 812 can be moved in relation to compartment 800.
[000120] Figure 56 illustrates the battery unit 800 attached to an 850 battery dock. For clarity, several components have been removed. Referring now to figures 54A, 54B, 55 and 56, the battery dock 850 comprises a protruding member 858 sized to be received by the cavity 810 (figure 51) of the battery unit 800. Prior to attachment, drain 812 is in the open position (figure 54A). When attaching the battery unit 800 to the battery dock 850, the protruding member 858 is inserted into the cavity 810 and the battery unit 800 is moved relative to the battery dock 850 in the direction indicated by the arrow 862. Eventually the distal end 860 of protruding member 858 contacts the contact surface 840 of drain 812. As the user continues to secure the battery unit 800, drain 812 is moved in relation to compartment 802, in the direction indicated by arrow 864, and moves to the closed position (figure 54B). In this position, the battery unit 800 begins to drain slowly. When battery unit 800 is removed from battery dock 850, drain 812 can remain in the position shown in figure 54B. In this way, the cells (not shown) of the battery unit 800 can drain any remaining charge by a resistive element, either before or during disposal.
[000121] It should be considered that the battery unit's translatable discharge drain is not limited to the implementation illustrated in figure 56. Figures 57A and 57B, for example, illustrate battery unit 900 and drain 912 with several components removed for clarity. Drain 912 is translatable between an open position (figure 57A) and a closed position (figure 57B). In the open position, the contacts 916, 918 are coupled to the non-conductive portions of a housing 920, 922, respectively. Drain 912 can travel on a 914 rail when traveling between open and closed position. Figure 57B shows the battery unit 900 in a closed position after a pump 958 has moved drain 912 in the direction indicated by arrow 964. Pump 958 can be a component of a battery dock for a surgical instrument, for example. In one embodiment, the battery dock comprises a cavity that is sized to receive battery unit 900 and pump 958 is positioned within the cavity. In the closed position, the contacts 916, 918 are in electrical contact with electrodes 924, 926. The drain 912 can comprise a printed circuit board 932 to which at least one resistive element is mounted using a surface mount or a connection through orifice, for example.
[000122] Figures 58A and 58B illustrate a battery unit 1000 according to another non-limiting mode. Several components have been omitted for clarity. The battery unit 1000 comprises a drain 1012 that is translatable between an open position (figure 58A) and a closed position (figure 58B). The battery unit 1000 may comprise a first electrode 1024 with a contact 1025 and a second electrode 1026 with a contact 1027. The electrodes 1024, 1026 may be in contact with cells (not shown) of the battery unit 1000. In the open position, the contacts 1016, 1018 of the drain 1012 are not coupled to the contacts 1025, 1027 of the electrodes 1024, 1026. The drain 1012 can travel on a rail 1014 when traveling between the open position and the closed position. Figure 58B shows the battery unit 1000 in a closed position after a pump 1058 has moved drain 1012 in the direction indicated by arrow 1064. Pump 1058 can be a component of a battery dock for a surgical instrument, for example. In the closed position, the contacts 1016, 1018 of the drain 1012 are in electrical contact with the contacts 1025, 1027 of the electrodes 1024, 1026. The drain 1012 can comprise a printed circuit board 1032 that includes at least one resistive element. In some embodiments, contacts 1016, 1018 themselves can comprise resistive elements. In fact, resistive elements can be elements of any suitable resistance value and any suitable mechanical configuration.
[000123] Figure 59 is a perspective view of a battery unit 1100. Figures 60A and 60B show views at intervals of the battery unit of figure 1100 during various stages of operation, with several components removed for clarity. The battery unit 1100 has a cell 1102 and an external compartment 1104 that defines a cavity 1110. The external compartment 1104 may be non-conductive and have conductive contacts to supply power to the circuit of a surgical instrument when the battery unit 1100 is attached to a surgical instrument. In one embodiment, the 1100 battery unit is received by a cavity in a pistol grip portion of a surgical instrument. The battery unit 1100 comprises a drain 1112 that is translatable between an open position (figure 60A) and a closed position (figure 60B). In one embodiment, drain 1112 has first and second contacts 1116, 1118 that are coupled to a circuit board 1132. Circuit board 1132 can include, for example, at least one resistive element. In some embodiments, circuit board 1132 includes an additional circuit. The battery unit 1100 comprises a first electrode 1124 coupled to an anode of cell 1102 and a second electrode attached to a cathode of cell 1102. Before the battery unit 1100 is attached to an instrument, drain 1112 is in the open position ( figure 60A). In the illustrated embodiment, the first contact 1116 is electrically coupled to the first electrode 1124 and the second contact 1118 is resting on, or otherwise in contact with, a non-conductive finger 1120. As the battery unit 1100 is attached to a instrument, a protruding portion 1158 of the instrument can be received by cavity 1110 and can contact drain 1112 to drive drain 1112 in the direction indicated by arrow 1164. In the closed position (figure 60B), the first contact 1116 is electrically coupled to the first electrode 1124 and the second contact 1118 is electrically coupled to the second electrode 1126. In this position, a closed circuit is created that allows the cell 1102 to discharge energy through the drain 1112.
[000124] Additional details regarding surgical instruments and battery units are described in US patent application serial number 12 / 884,838, entitled "SURGICAL INSTRUMENTS AND BATTERIES FOR SURGICAL INSTRUMENTS," filed on September 17, 2010 and incorporated herein in full, as a reference.
[000125] It should be understood that at least some of the figures and descriptions presented here have been simplified to illustrate elements that are relevant to a clear understanding of the description, while eliminating, for purposes of clarity, other elements. Elements skilled in the art will recognize, however, that these and other elements may be desirable. However, due to the fact that such elements are well known in the art and due to the fact that they do not facilitate a better understanding of the description, a discussion of such elements is not provided here.
[000126] At the same time that several modalities have been described, it will be apparent, however, that various modifications, alterations and adaptations of these modalities can occur to individuals versed in the technique with the attainment of some or all of the advantages of the description. For example, according to several modalities, a single component can be replaced by multiple components, and multiple components can be replaced by a single component, to perform one or more specific functions. This request is, therefore, intended to cover all these modifications, changes and adaptations, without departing from the scope and spirit of the description, as defined by the attached claims.
[000127] Any patent, publication or other description material, in whole or in part, which is said to be incorporated into the present invention for reference purposes, is incorporated into the present invention only to the extent that the incorporated materials do not come into effect. conflict with existing definitions, statements or other description material presented in this description. Accordingly, and to the extent necessary, the description as explicitly stated herein replaces any conflicting material incorporated herein by way of reference. Any material, or portion thereof, that is deemed to be incorporated by reference into the present invention, but which conflicts with definitions, statements, or other description materials existing herein will be incorporated here only to the extent that no conflict will appear between the embedded material and the existing description material.

权利要求:
Claims (6)
[0001]
1. Surgical instrument (10) characterized by the fact that it comprises: an end actuator (12); a cable (6) operationally coupled to the end actuator (12), in which the cable (6) comprises an actuator ( 18) to drive the end actuator (12), the cable (6) comprising a battery dock (850); the battery dock (850) comprising a protruding member (858); a battery unit (800) attachable to the battery dock (850), where the battery unit (800) is in electrical contact with at least one of the cable (6) and the end actuator (12) when attached to the battery dock (850), and in that the battery unit (800) comprises: a compartment (802); and a first anode and a first cathode positioned in the compartment (802); and a translatable discharge drain (812), in which, when attaching the battery unit (800) to the battery dock (850), the protruding member (858) comes into contact with the discharge drain (812) and the discharge drain (812) moved in relation to the compartment (802) to electrically couple the first anode of the battery unit (800) to the first cathode of the battery.
[0002]
2. Surgical instrument (10), according to claim 1, characterized by the fact that the discharge drain (812) comprises a first contact (816) and a second contact (818), and at least one resistive element electrically coupled the first (816) and the second (818) contact, where, when attaching the battery unit (800) to the battery dock (850), the discharge drain (812) electrically couples the first anode to the first cathode through at least one resistive element.
[0003]
3. Surgical instrument (10), according to claim 2, characterized by the fact that at least one resistive element has a resistance in the range of 90 ohms to 110 ohms.
[0004]
4. Surgical instrument (10), according to claim 1, characterized by the fact that the battery unit (800) comprises a second anode and a second cathode positioned inside the compartment (802) and in which, at the time of fixation from the battery unit (800) to the battery dock (850), the discharge drain (812) electrically couples the second anode to the second cathode.
[0005]
5. Surgical instrument (10), according to claim 1, characterized by the fact that the end actuator (12) comprises at least one implement selected from the group consisting of: a cutter, a fixer, a stapler, an implement of RF, an ultrasonic implement and a laser implement.
[0006]
6. Surgical instrument (10) according to claim 1, characterized in that the battery unit (800) comprises at least one cell selected from the group consisting of a CR123 cell and a CR2 cell.

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法律状态:
2018-12-26| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|

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2019-09-10| B06U| Preliminary requirement: requests with searches performed by other patent offices: suspension of the patent application procedure|

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2020-07-21| B09A| Decision: intention to grant|

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2020-11-17| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 13/09/2011, OBSERVADAS AS CONDICOES LEGAIS. |

优先权:

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申请号 | 申请日 | 专利标题

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US12/884,995|2010-09-17|

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US12/884,995|US8632525B2|2010-09-17|2010-09-17|Power control arrangements for surgical instruments and batteries|

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PCT/US2011/051357|WO2012037096A2|2010-09-17|2011-09-13|Power control arrangements for surgical instruments and batteries|

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