• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    linear stapler. The present invention relates to a linear stapler comprising a support base having a proximal end and a distal end; a trigger located at the proximal end of the support base; an end actuator located at the distal end of the support base, triggered by the trigger and including a cartridge. the cartridge comprises a cartridge body. the cartridge body includes staple slots to accommodate the staples; and a cartridge latch which is forced into an open position to be in a boundary position with respect to an outer side of a staple driver when the cartridge is not fired, and which retracts again in spring motion towards the interior of the cartridge body after the staples in the cartridge have been fired by the staple trigger. another linear stapler comprises a support base having a proximal end and a distal end; a trigger located at the proximal end of the support base; an end actuator located at the distal end of the support base, triggered by the trigger and including a cartridge; the cartridge comprises a cartridge body including a cartridge spent indicator.
    公开号:BR112014020069B1
    申请号:R112014020069-6
    申请日:2013-02-06
    公开日:2021-07-20
    发明作者:Anil K. Nalagatla
    申请人:Ethicon Endo-Surgery, Inc；
    IPC主号:
    专利说明:

    FIELD OF TECHNIQUE
    [001] The present invention relates to a surgical stapling and cutting instrument. More specifically, the present invention relates to a linear stapler, containing a cartridge with a lock that prevents a used cartridge from firing again. The present invention is also related to a linear stapler which contains a cartridge with a cartridge spent indicator, capable of indicating when a cartridge is spent. BACKGROUND OF THE INVENTION
    [002] Surgical and cutting instrument staplers have been used in the prior art to make an incision in tissue and simultaneously apply rows of staples on opposite sides of the incision. End actuators of such instruments commonly include a pair of collaborating jaw elements which, if the instrument is intended for endoscopic or laparoscopic applications, is capable of passing through a cannula passage. One of the jaw members generally receives a staple cartridge having at least two rows of staples spaced laterally apart. The other jaw member defines an anvil having staple forming pockets aligned with rows of staples within the cartridge. The instrument includes a plurality of reciprocating wedges which, when driven distally, pass through openings in the staple cartridge and engage with the triggers holding the staples to trigger the firing of the staples towards the fixed jaw.
    [003] It is often advantageous to produce an end actuator for the surgical stapler that is reusable. For example, a patient may need a series of cutting and stapling operations. Replacing an entire end actuator for each operation tends to be economically inefficient. This is especially true if the end actuator is designed to provide strength and reliability over multiple operations. To that end, staple cartridges are fitted into the front end actuator with each surgical stapler operation.
    [004] Although the staple cartridge containing staples provides numerous advantages, it is desirable to avoid inadvertent firing of the instrument when an unfired staple cartridge is not present. Otherwise, tissue can be cut without staples to minimize bleeding. It is particularly desirable that the prevention of inadvertent tripping takes place reliably, which is not subject to the occurrence of eventual failures. In addition, to facilitate fabrication and assembly, it is also desirable that lock components be obtained with a minimum number of components.
    [005] Consequently, there is significant demand for a linear stapler containing a cartridge with a latch capable of preventing a used or spent cartridge from firing again, and for a linear stapler containing a cartridge with a cartridge spent indicator, capable of indicating when a cartridge is worn out. SUMMARY OF THE INVENTION
    [006] The present invention relates to a linear stapler that contains a cartridge with a lock capable of preventing a used or spent cartridge from firing again.
    [007] According to the present invention, a linear stapler comprising:
    [008] a support base with a proximal end and a distal end;
    [009] a trigger located at the proximal end of the support base;
    [0010] an end actuator located at the distal end of the support base, triggered by a trigger and including a cartridge comprising:
    [0011] a cartridge body including:
    [0012] staple slots to accommodate the staples; and
    [0013] a cartridge latch that is forced into an open position to be in a boundary position with respect to an outer side of a staple driver when the cartridge is not fired, and which returns in a spring-loaded movement towards the interior of the cartridge body (meaning it returns to the cartridge's normal outer dimension and shape when the cartridge latch is not forced to a larger dimension), after the staple trigger fires in the cartridge by the staple trigger.
    [0014] Preferably, the cartridge latch comprises one or more flexible elements disposed on a wall of the cartridge body and extending proximally.
    [0015] Preferably, the flexible elements are molded integrally with the cartridge body.
    [0016] Preferably, the flexible elements are manufactured separately and subsequently fixed to the cartridge body.
    [0017] Preferably, the flexible elements are produced from polymers.
    [0018] Preferably, the flexible elements are produced from metal.
    [0019] Preferably, the flexible elements are spring bundles.
    [0020] Preferably, each flexible element comprises an enlarged proximal end or a bulge.
    [0021] According to the present invention, a linear stapler comprising:
    [0022] a support base with a proximal end and a distal end;
    [0023] a trigger located at the proximal end of the support base;
    [0024] an end actuator located at the distal end of the support base, triggered by the trigger and including a cartridge; the cartridge comprises a cartridge body including a cartridge spent indicator.
    [0025] Preferably, the cartridge spent indicator comprises an indicator window mounted on the cartridge body and an indicator feature mounted on a staple driver for driving the staples in the cartridge; after the cartridge is fired, the indicator window shows the indicator feature.
    [0026] Preferably, the indicator resource is a color or a mark. BRIEF DESCRIPTION OF THE DRAWINGS
    [0027] The embodiments of the present invention will now be described below, with reference to the attached drawings, in which:
    [0028] Figure 1 is a perspective view of a linear stapler according to embodiments of the present invention.
    [0029] Figure 2 is a side view of the linear stapler in an open, non-triggered position.
    [0030] Figure 3 is a side view of the linear stapler in a closed actuated position.
    [0031] Figure 4 is a partial cross-sectional view of a linear stapler end actuator.
    [0032] Figures 5A and 5B are respectively schematic view and sectional view of a clamp actuator shown in Figure 4.
    [0033] Figures 6A and 6B are respectively schematic view and sectional view of a staple cartridge shown in Figure 4.
    [0034] Figure 7 is a view showing the relationship between the cartridge and the staple trigger before firing.
    [0035] Figure 8 is a view showing the relationship between the cartridge and the staple trigger after firing. MODALITIES
    [0036] For convenience and ease of understanding, equal parts are indicated by similar reference signs in context. It will be understood that the terms "proximal" and "distal" are used in the present invention with reference to a user picking up a handle from an instrument. In this way, an end actuator is distal to the most proximal cable. It will also be understood that, for the sake of convenience and clarity, spatial terms such as "vertical" and "horizontal", "upward" and "downward" are used in the present invention in connection with the drawings. However, surgical instruments can be used in many orientations and positions, and these terms are not intended to be limiting and absolute.
    [0037] Figure 1 shows the perspective view of a stapler 1 according to the present invention. The stapler 1 comprises the support base 2, having a proximal end and a distal end, an end actuator 11 located at the distal end of the support base 2, a trigger 3 and a handle 4, both located on a proximal side of the base. strut 2, and a button 5 located at the proximal end of the strut 2. The end actuator 11 is activated and triggered by the trigger 3 and the button 5, so that the end actuator 11 can staple the stapled tissue. Figure 2 shows stapler 1 in an open, unactivated position, and Figure 3 shows stapler 1 in a closed, activated position with staples ejected to staple the fabric.
    [0038] The components of stapler 1 will be described in detail with reference to the attached drawings.
    [0039] As shown in Figures 1 and 2, the end actuator 11 is situated at the end of the support base 2 and has a substantially U-shaped support structure 12 connected with the support base 2. U-shape 12 is formed by extrusion of, for example, aluminum, with subsequent machining to create the support structure 12. In this way, multiple parts are not necessary and the associated cost of fabrication and assembly is substantially reduced. In addition, overall stability can be improved and stapler 1 is easy to sterilize as cobalt irradiation effectively penetrates the extruded aluminum. Furthermore, less trauma to the tissue can be achieved based on the smooth outer surface by extrusion. The U-shaped support structure 12 supports a fixed jaw 6 and a movable jaw 8. The fixed jaw 6, in turn, supports an anvil 7. The movable jaw 8 contains a cartridge 9 to accommodate surgical staples. A retaining pin 10 is supported on an upper portion of the support base 2. As shown in the Figures, the retaining pin 10 extends through a through hole 43 and a through hole 27 at an upper end of the movable jaw 8. retaining pin 10 can be moved forward into a hole 71 in anvil 7 to ensure that anvil 7 and cartridge 9 are correctly aligned and that tissue captured between them is properly held.
    [0040] Reference is now made to Figure 4, in which the movable jaw 8 and a cartridge assembly are illustrated in a cross-sectional view. The cartridge assembly comprises the cartridge 9 facing the anvil 7, a clamp driver 15 proximal to the cartridge 9, a depression rod 17 extending from the proximal side to the distal side, and a housing 16 surrounding the cartridge. cartridge 9, driver 15, and a part of depression rod 17. As shown in Figures 1-3, housing 16 is formed with an opening 94 to expose part of cartridge 9. Detailed description of parts as follows.
    [0041] As shown in Figure 4, the lower end of the cartridge 9 is formed with a slot 28 for guide function. The distal surface of the cartridge 9 (i.e., the anvil facing surface) is provided with a forwardly extending spacer element 29 adjacent to the through hole 27 and a forwardly extending spacer 50 adjacent the further end. outside of the slit 28. These spacers cooperate with the anvil to determine the most distal position of the cartridge 9. Of course, these elements are not absolutely necessary and can be omitted.
    [0042] Figures 6A and 6B are respectively schematic view and sectional view of the staple cartridge according to an embodiment of the present invention, in which the spacer element and the spacer have been omitted for clarity. As shown in Figure 6A, the cartridge 9 comprises a cuboid general cartridge body 91 which may be made of polymers. The cartridge body 91 contains staple slots 34 on the surface of its distal end to accommodate the staples. Each clamp slot 34 contains additional grooves at its ends (not shown in the figures) designed to frictionally receive the legs of a surgical clamp. Cartridge body 91 has an open proximal end for passage of driver 15. On left and right side walls, cartridge body 91 contains a cartridge latch. The cartridge lock can prevent a used or used cartridge from firing again or refilling after it has been fired. Figures 5A-8 also show a used cartridge indicator that can indicate that a cartridge is used up.
    [0043] As shown in Figure 6A, the cartridge latch comprises flexible elements 92 arranged on the left and right side walls of the cartridge body 91. Obviously, those skilled in the art can conceive that the flexible elements 92 can be arranged on the top walls and lower, or arranged only on one wall of the cartridge. As shown in the figures, the flexible elements 92 are strip-like elements that extend proximally (i.e., towards the right side of the figure in Figure 6A or 6B) and each having at its proximal end a protrusion extending projects into the cartridge. The other side wall portion of the cartridge body 91 has a similar wall thickness. The flexible elements 92 can be polymeric elements integrated into the cartridge body 91, made by molding and the like, or separate metallic elements fixed to the cartridge body 91 after being manufactured. Furthermore, the flexible elements 92 can be a bundle of springs, a metal wire with an additional elastic valve protruding from its proximal end, or a bundle of springs with an enlarged proximal end, and the like. In short, the flexible elements 92 can take any suitable shape, as long as they can spring-back to their original shape when the holding force that forces them to assume an open position is released. Of course, those skilled in the art are able to understand that flexible metallic elements 92 can provide greater stability and strength.
    [0044] Also as shown in Figure 6A, the spent cartridge indicator comprises an indicator window 93 disposed in the cartridge body 91. In the embodiment shown in Figure 6A, the indicator window 93 is situated in an upper portion of the cartridge body 91. However, it should be understood that indicator window 93 may be situated in other positions, as long as opening 94 of housing 16 is disposed in the corresponding position to expose indicator window 93. Alternatively, housing 16 may be omitted or the compartment 16 only encloses a part of the cartridge and does not cover the indicator window 93. However, the shape of the indicator window 93 is not limited to the rectangular shape, as shown in the figures, it can be circular, square, triangular, pentagonal, etc.
    [0045] In position immediately proximal to the cartridge 9 is the actuator 15 (as shown in Figures 5A and 5B as two exemplary embodiments). Actuator 15 is of sufficient strength and is molded from suitable plastic materials, adapted for use in a surgical environment, and preferably produced from plastic materials which can be sterilized by known methods. As shown in Figures 5A and 5B, the actuator 15 is an integral, one-piece element comprising an actuator body 21, a plurality of drive plates 24 extending forwardly from a distal surface of the actuator body 21 The number of drive plates 24 is equal to the number of staples stored in the cartridge 9. The forwardly extending drive plates 24 are arranged in two parallel rows, spaced apart, with the one-row drive plates offset with respect to the drive plates from the other, corresponding to the arrangement of the staple slots 34 of the cartridge 9. As shown in Figure 5A, the drive body 21 generally has a cuboid shape, with two bevelled proximal ends and left and right sides containing a recessed portion. As shown in the sectional view of the embodiment of Figure 5B, the actuator body section 21 is shaped more or less similar to a dog bone. In one embodiment, the drive body 21 and drive plates 24 have different colors that act as indicator features of the cartridge spent indicator. In another embodiment, the actuating body 21 has a mark 95 (imaginary line in Figure 5A) on it, which functions as an indicator feature of the cartridge spent indicator. Mark 95 can be any mark that might attract attention, such as circular, square, triangular, transverse and similar shaped marks, or pocket, recess or small projection that does not affect the movement known to those skilled in the art.
    [0046] As shown in Figure 4, the drive plates 24 of the driver 15 can be inserted into the clip slots 34 of the cartridge 9. It will be noted that the tooth 24 of the driver overlaps a crown of a corresponding clip. Thus, when the driver 15 is displaced distally with respect to the cartridge 9, the surgical clip is ejected distally from the clip slot 34.
    [0047] Figure 4 also shows housing 16. Housing 16, like driver 15 and cartridge 9, is a one-piece integral molded plastic member.
    [0048] A proximal end of depression rod 17 (Figure 4) is associated with trigger 3 and button 5 (Figure 1). Rotating knob 5 moves depression rod 17 distally and rotation of actuator 3 toward handle 4 (indicated by an arrow D in Figure 3) triggers cartridge 9, causing depression rod 17 to actuate actuator 15 to form the staples. A distal end of depression rod 17 terminates in a plate-like structure 49 (Figure 4). A distal end of the plate-like structure 49 may contact the proximal end of the actuator body 21 of the actuator 15. When the depression rod 17 is moved distally, it moves the actuator 15 distally through the actuator-like structure. plate 49.
    [0049] Figure 7 is a view showing the relationship between the cartridge and the staple trigger before firing. As shown in Figure 7, the drive plates 24 of the driver 15 are located only on the proximal sides of the staple slots 34 of the cartridge 9, and the proximal end of the driver body 21 of the driver 15 still does not pass the protrusions of the proximal ends of the elements. flexible 92. At this point, a part of the guide plate 24 can be seen through the indicator window 93 of the cartridge body 91.
    [0050] Figure 8 is a view showing the relationship between the cartridge and the staple trigger after firing.
    [0051] When the cartridge 9 is actuated by the depression rod 17, the plate-like structure 49 of the depression rod 17 contacts the proximal end of the actuator body 21 of the actuator 15 and moves the actuator 15 distally; the drive plates 24 of the driver 15 are further inserted into the clip slots 34 of the cartridge 9. As the drive plates 24 of the driver 15 are inserted into the clip slots 34, the bulges of the flexible elements 92 slide into the proximal end of the body. actuator 21, are forced open and cannot quickly retract into the cartridge (meaning they cannot return to the normal shape of the cartridge, where the flexible elements 92 are not deformed). After firing, as shown in Figure 8, the depression rod 17 is retracted and the plate-like structure 49 is also retracted. At this point, the drive plates 24 of the driver 15 are held completely in the clamp slots 34. The proximal end of the driver 15 passes the protrusions of the flexible elements 92 and completely enters the cartridge 9. Then, the proximal end of the driver body 21 of the The actuator 15 no longer contains the flexible elements 92. The flexible elements 92 retract back into the cartridge body 91, or at least partially retract, since the flexible elements assume a position to prevent the depression rod 17 from being pushed. forward in a distal position passing them. In this way, the flexible elements 92 lie between the plate-like structure 49 at the distal end of the depression rod 17 and the driver 15. Therefore, when the user attempts to reload a used or spent cartridge, the flexible elements 92 will prevent the rod of depression 17 is pushed forward, thereby preventing the trigger from being fired again.
    [0052] As described above, the flexible elements can be provided on the upper and lower walls of the cartridge, or provided only on one of the left, right, upper and lower walls, provided that the proximal end of the actuator actuator body is provided with a corresponding structure, so that the flexible elements are forced to assume an open position to be in a boundary position with respect to the outside of the staple driver, when the cartridge has not been fired, and to retract to approximately the regular shape or dimension of the cartridge body, after the staples in the cartridge have been fired by the staple trigger. The proximal end of the flexible element need not have a bulge, but may have an enlarged portion around the proximal end that extends towards the interior of the cartridge. For example, the enlarged portion may be the part that gradually enlarges from the distal end to the proximal end, extending towards the interior of the cartridge.
    [0053] In the position shown in Figure 8, the drive plates 24 of the driver 15 are held completely in the staple slots 34. Only a portion of the driver body 21 can be seen through the indicator window 93 of the cartridge body 91. embodiment in which the actuating body 21 and the driving plates 24 are different colors, the color now shown in the indicator window 93 is different from that shown before firing the cartridge to indicate to the user that the cartridge has been fired. In the mode where the actuating body 21 has a mark 95 on it, the mark 95 can be seen through the indicator window 93 only at this time to indicate to the user that the cartridge has been fired. Of course, the two shapes can be combined so that when you are in the position shown in Figure 8, you can see not only the different color, but also the mark through the indicator window 93 to more reliably indicate that the cartridge has been fired. . In other words, after the cartridge is fired, the indicator feature can be seen through the indicator window 93 to indicate to the user that the cartridge has fired.
    [0054] The various embodiments of the present invention have been described above in conjunction with linear staplers. It is important to note, however, that in other embodiments, the surgical instrument of the invention presented in the present invention need not be a linear stapler, but may be a curved stapler and the like. The present invention also has application in conventional endoscopic and open surgical instrumentation, as well as robot-assisted surgery.
    [0055] The instruments described here may also be designed to be discarded after a single use, or they may be designed to be used multiple times. In either case, however, the instrument can be reconditioned for reuse after at least one use. Reconditioning can include any combination of steps to disassemble the instrument, followed by cleaning or replacing specific parts, and subsequent reassembly. In particular, the instrument can be disassembled, and any number of particular parts or parts of the instrument can be selectively replaced or removed, in any combination. After cleaning and/or changing specific parts, the instrument can be reassembled for subsequent use in a reconditioning facility or, by a surgical team, immediately prior to a surgical procedure. Those skilled in the art will understand that reconditioning an instrument can use a variety of techniques for disassembly, cleaning/replacement and reassembly. The use of such techniques and the resulting refurbished instrument are all within the scope of this order.
    [0056] Although the present invention has been described herein in connection with certain embodiments presented, many modifications and variations to these embodiments can be implemented. For example, different types of end actuators can be employed. Also, where materials are disclosed for certain components, other materials may be used. The aforementioned description and the following claims are intended to cover all such modifications and variations.
    权利要求:
    Claims (7)
    [0001]
    1. Cartridge (9) for an end actuator of a linear stapler, the cartridge (9) comprising: a staple driver (15) comprising a proximal end and a distal end, a cartridge body (91) including: slots of staple (34) to accommodate staples; and the cartridge characterized in that it comprises a cartridge lock to prevent the cartridge from being fired again once used or spent, the cartridge lock comprising one or more flexible elements (92) disposed on a wall of the cartridge body (91 ) and extending proximally, wherein the flexible elements (92) and the clip driver (15) are configured so that the flexible elements are forced into an open position by the proximal end of the clip driver to abut the outer side. of the staple trigger (15) when the cartridge (9) is being fired and the spring returns in an inward direction of the cartridge body (91) after the staples in the cartridge (9) are triggered by the staple trigger (15), of so that the flexible elements (92) prevent the cartridge from being fired again once it is used or used up.
    [0002]
    2. Cartridge (9), according to claim 1, characterized in that the flexible elements (92) are molded integrally with the cartridge body (91).
    [0003]
    3. Cartridge (9), according to claim 1, characterized in that the flexible elements (92) are fixed to the cartridge body (91).
    [0004]
    4. Cartridge (9), according to claim 1, characterized in that the flexible elements (92) are produced from polymer or metal.
    [0005]
    5. Cartridge (9), according to claim 1, characterized in that the flexible elements (92) are bundles of springs.
    [0006]
    6. Cartridge (9), according to claim 5, characterized in that each flexible element (92) comprises an enlarged proximal end.
    [0007]
    7. Linear stapler (1), characterized in that it comprises: a support base (2) with a proximal end and a distal end; a trigger (3) located at the proximal end of the support base (2); an end actuator (11) located at the distal end of the support base (2), configured to be triggered by the trigger (3) and including a cartridge (9) of any preceding claim.
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    同族专利:
    公开号 | 公开日
    EP3685761A1|2020-07-29|
    EP2814405B1|2020-01-08|
    WO2013122792A3|2014-03-06|
    WO2013122792A2|2013-08-22|
    US20130206813A1|2013-08-15|
    CN104135952A|2014-11-05|
    RU2014137141A|2016-04-10|
    JP6254100B2|2017-12-27|
    RU2623130C2|2017-06-22|
    EP2814405A2|2014-12-24|
    CN104135952B|2017-07-14|
    JP2015509393A|2015-03-30|
    MX368375B|2019-09-30|
    MX2014009791A|2014-09-12|
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    法律状态:
    2018-12-04| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-12-17| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2021-05-11| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-07-20| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 06/02/2013, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US201261598395P| true| 2012-02-14|2012-02-14|
    US61/598,395|2012-02-14|
    PCT/US2013/024841|WO2013122792A2|2012-02-14|2013-02-06|Linear stapler|
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