巴西专利BR112013015246B1 medical device for engaging tissue

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专利摘要:
MEDICAL DEVICES WITH REMOVABLE ARTICULABLE CLAWS. The present invention relates to medical systems, devices and methods for engaging tissue, for example, for clamping tissue, closing a perforation or performing hemostasis. Generally, the medical system including a housing, the first and second rotating garrets in relation to the housing, the first and second connections attached to both the claws and the housing and a driver. The housing, the first and second jaws and the first and second jaws form a binding mechanism that allows the jaws to engage the tissue and be left in vivo.
公开号:BR112013015246B1
申请号:R112013015246-0
申请日:2011-12-15
公开日:2020-11-24
发明作者:Tyler Evans Mclawhorn；Michelle D. Martinez；Vihar C. Surti；John Crowder Sigmon Jr.
申请人:Cook Medical Technologies Llc；
IPC主号:

专利说明:

[0001] [001] In a conventional way, forceps can be inserted into a body cavity through an endoscope to grab living tissue from a body cavity for hemostasis, marking, and / or ligation. Such forceps are often known as surgical forceps, endoscopic forceps, hemostasis forceps and vascular forceps. In addition, forceps are now being used in numerous applications related to gastrointestinal bleeding, such as peptic ulcers, Mallory-Weiss laceration, Dieulafoy lesions, angiomas, post-papillary bleeding, and small varicose veins with active bleeding. The clamps were also tested for use in closing stomach perforations.
[0002] [002] Gastrointestinal bleeding is a common and serious illness in some way that is often fatal if left untreated. This problem prompted the development of numerous endoscopic therapeutic approaches to achieve hemostasis such as the injection of sclerosing agents and contact thermo-coagulation techniques. Although such approaches are often effective, bleeding continues in many patients and corrective surgery is therefore necessary. Because surgery is an invasive technique that is associated with a high rate of morbidity and many other undesirable side effects, there is a need for highly effective and less invasive procedures.
[0003] [003] Mechanical hemostatic devices such as forceps have been used in various parts of the body, which include gastrointestinal applications. One of the problems associated with conventional hemostatic devices and forceps, however, is that many devices are not strong enough to cause permanent hemostasis. In addition, tweezers have also been tested for use in closing perforations in the stomach or gastrointestinal structures, but unfortunately, traditional tweezers suffer from difficult positioning and the ability to grasp a limited amount of tissue potentially results in incomplete closure. summary
[0004] [004] The present invention relates to any of the following aspects in various combinations and may also include any other aspect described below in the written description or in the accompanying drawings.
[0005] [005] In a first aspect, a medical device is provided to engage tissue, the medical device includes a housing, first and second jaws, first and second connections, and a trigger. The housing defines an internal passageway and a longitudinal axis that extends between proximal and distal ends of the housing. The housing also defines a claw guide surface, a first connecting guide surface and a second connecting guide surface, each of the guide surfaces extending longitudinally between proximal and distal ends of the guide surfaces. The first claw is connected slidably and articulated to the housing, and has proximal and distal ends. The first jaw is slidably received within the internal passage for longitudinal movement along the jaw guiding surface. The second claw is connected slidably and articulated to the housing, and has proximal and distal ends.
[0006] [006] The second grapple is slidably received inside the internal passage for longitudinal movement along the grapple guide surface. The first connection has first and second ends. The first end is fixedly attached to the first claw, and the second end is slidable and pivotally attached to the housing for longitudinal movement along the first connecting guide surface. The second connection has first and second ends. The first end is fixedly attached to the second claw, and the second end is slidable and pivotally attached to the housing for longitudinal movement along the second connecting guide surface. The driver is operatively connected to the first and second jaws, whereby the longitudinal movement of the driver moves the first and second jaws longitudinally along the jaw guide surface and moves the second ends of the first and second connections along the first and second connecting guide surfaces. The distal portions of the first and second connecting guide surfaces are shaped in such a way that the longitudinal movement of the second ends of the first and second connections through them rotates the first and second jaws in relation to the housing.
[0007] [007] According to more detailed aspects, the claw guide surface is arranged in parallel to a claw plane that extends through the longitudinal axis, and the first connecting guide surface extends along a first remote connecting path of the claw plane, and the second connection guide surface extends along a second connection path away from the claw plane. Preferably, the first and second connection paths are spaced on opposite sides of the claw plane, and the first and second connections are generally C-shaped and defined by a middle section that interconnects a proximal section and a distal section. The first jaw is positioned substantially on a first side of the jaw plane, and the second jaw is positioned substantially on a second side of the jaw plane, where the middle section of the first connection is positioned on the second side of the jaw plane, and the middle section of the second connection is positioned on the first side of the claw plane. The first and second claw guide surfaces each have a proximal portion that extends in parallel with respect to the longitudinal axis, and a distal portion that extends transversely with respect to the proximal portion. The distal portions of the first and second jaw guiding surfaces extend towards the jaw plane.
[0008] [008] According to additional detailed aspects, a first link pivot pin pivotally connects the second end of the first connection to the housing, and a second link pivot pin articulates the second end of the second connection to the housing. The driver includes a distal end that includes at least one slot that receives the first and second connecting pins, the at least one slot being elongated and slidable that receives the first and second connecting pins. Preferably, the distal end of the driver includes a first flange separated laterally from a second flange, at least one slot including a first slot formed on the first flange and receiving the first connecting pin, and a second slot formed on the second flange and that receives the second connecting pin. The first connecting guide surface is defined by a first connecting slot formed in the housing, and the second connecting guide surface is defined by a second connecting slot formed in the housing, where the first connecting slot is positioned on an opposite side of the housing as the second connection slot.
[0009] [009] In accordance with additional detailed aspects, the distal end of the driver includes a driver's end surface located distally to at least one slot, an end surface that confines the proximal ends of the claws. The driver is engaged with the second ends of the first and second connections when the driver is moved distally, and preferably, both distally and proximally. The proximal ends of the first and second claws are slidable and pivotally fixed to the housing, and preferably, the proximal ends are pivotally fixed to the housing around a shared claw pivot axis. The first ends of the first and second connections are fixed in a non-rotating manner to the middle sections of the first and second claws, respectively. The second ends of the first and second connections are connected slidably and articulated to the housing. In addition, the distal portions of the first and second connecting guide surfaces extend vertically towards each other, and the distal portions of the first and second connecting guide surfaces can pass through the claw guide surface. Brief Description of Drawings
[0010] [0010] The accompanying drawings incorporated and forming a part of the specification illustrate various aspects of the present invention, and together with the description, serve to explain the principles of the invention. In the drawings:
[0011] [0011] Figure 1 is a perspective view of a medical system and device constructed in accordance with the teachings of the present invention;
[0012] [0012] Figure 2 is a side view of the medical system and device of Figure 1, which includes the housing drawn in broken lines to show the internal components;
[0013] [0013] Figure 3 is a perspective view of a driver that forms a portion of the medical system and device of Figure 1;
[0014] [0014] Figure 4 is a side view of a connection that forms a portion of the medical system and device of Figure 1;
[0015] [0015] Figure 5 is a front view of the connection shown in Figure 3;
[0016] [0016] Figure 6 is a side view of the medical system and device of Figure 1, which includes the housing removed to show the internal components;
[0017] [0017] Figure 7 is a side view of a housing that forms a portion of the medical system and device of Figure 1;
[0018] [0018] Figures 8 to 10 are side views showing the operation of the medical system and device of Figure 1;
[0019] [0019] Figures 11 and 12 are top views, partially in cross section, representing operation of the medical system and device represented in Figure 1; and
[0020] [0020] Figures 13 and 14 are seen in cross section showing the operation of the medical system represented in Figure 1. Detailed Description
[0021] [0021] The terms "proximal" and "distal", as used in this document are intended to have a point of reference in relation to the user. Specifically, throughout the specification, the terms "distal" and "distally" must demonstrate a position, direction, or orientation that is generally far from the user, and the terms "proximal" and "proximally" must demonstrate a position, direction, or guidance that is generally directed at the user.
[0022] [0022] An exemplary medical system 20 that includes a medical device 40 for engaging T tissue (Figure 9) is shown in Figures 1 and 2. The medical system 20 and device 40 are generally measured and structured for operation through the working channel. an endoscope (not shown) or other scope, although system 20 and device 40 can also be used alone or in conjunction with other elongated devices such as catheters, fiber optic visualization systems, needles and the like. Generally, the medical system 20 includes a slidable drive wire 22 housed within the distal end 23 of a catheter 24 for selective connection to, and operation of, the medical device 40. As will be described in further detail herein, the medical device 40 generally includes a housing 42 that includes a first jaw 44 and a second jaw 46 hingedly connected to it to engage the fabric T. Generally, jaws 44, 46 have been shown to form clamping handles, although the jaws are intended for use in tissue clamping, for example, to close an opening or for hemostasis. Consequently, it will be recognized that the shape and structure of the claws can take many forms and serve many purposes and functions, all in accordance with the teachings of the present invention.
[0023] [0023] In the medical system 20, the sliding drive wire 22 extends through catheter 24. Although the term "wire" is used to refer to drive wire 22, it will be recognized that any lengthening control member can transmit force longitudinal over a distance (as required in typical endoscopic and laparoscopic procedures and the like) can be used, and this includes plastic rods or tubes, single or multiple filament yarns and the like. A connection block 26 is slidably inserted into the distal end 23 of the catheter 24 and defines a hole 28 through which the drive wire 22 slidably receives. The exterior of the connection block 26 includes a recessed portion 27, and two pins 30 (for example, formed of stainless steel wire) are connected to catheter 24 and positioned inside the recessed portion 27 (i.e., between proximal and distal flanges that define the recessed portion 27) to limit the longitudinal movement of the block connection point 26.
[0024] [0024] A distal end of the drive wire 22 defines a distal head 32 that is larger in size than the drive wire 22, and equally larger than the hole 28 in connection block 26. As will be described later in this document, the distal head 32 is used to slide the connection block 26 into the catheter 24 to disconnect the medical device 40 from the medical system 20. As also seen in Figures 1 to 4, the housing 42 of the medical device 40 is a tubular member defining an internal space 43. The proximal end of the housing 42 receives by friction a distal end of the connection block 26 within the internal space 43 for selective connection therewith.
[0025] [0025] The internal passage 43 of the housing 42 also receives the first and second jaws 44, 46 and a driver 48 is used to interconnect the drive wire 22 to jaws 44, 46. As best seen in Figure 2, the first and second the second jaws 44, 46 include distal ends 60, 62 which are structured to grasp and engage the fabric, having a prey shape as revealed in 61 / 141,934 filed on December 31, 2008, the disclosure of which is incorporated into this document as a reference in its entirety. Generally, the distal translation of the driver 48 causes the first and second jaws 44, 46 to rotate outwardly away from each other, while the proximal retraction of the driver 48 causes the first and second jaws 44, 46 rotate inward, towards each other.
[0026] [0026] As best seen in Figure 3, the driver 48 has a proximal portion that defines a socket 50 measured to receive the enlarged distal head 32 of the drive wire 22. At the proximal entrance of socket 50, two declining locking tabs 52 are formed to rotate in relation to the rest of the driver 48 to increase or decrease the size of socket 50. The locking tabs 52 can be separately formed and pivotally attached to the driver 48, or they can be integrally formed with the driver 48 and formed a resilient material that is flexible or folded to allow rotation of the locking tabs 52 radially inward and radially outward. At present, a proximal portion of the locking tabs defines angled shoulders 54 that angled outwardly to engage with housing 42 as will be discussed in further detail herein. The locking tabs 52 also include internal projections 53 that project laterally inward and separate socket 50 into a distal portion 50d and a proximal portion 50p.
[0027] [0027] As best seen in Figures 3 and 4, a distal portion of the driver 48 defines two flanges 56, 58 for engaging and operating the jaws 44, 46. The distal end surface 58d of the flange 58 engages a proximal end 64 of the jaw 44, while the distal end surface 56d of flange 56 engages a proximal end 66 of jaw 46. Flanges 56, 58 also include elongated slots 57, 59, respectively, for sliding and pivotable connection to two connections 68, 70, as will be also further discussed in this document. Flanges 56, 58 are shaped to allow and promote rotation of proximal ends 64, 66 of jaws 44, 46 with respect to flanges 56, 58 while engaged with them, and can be flat, curved, or a combination thereof as shown in Figures 3 and 4.
[0028] [0028] Now back to Figures 5a and 5b, one of the two connections 68, 70 is shown from the side and the front. Each connection 68, 70 is a C-shaped member that includes a middle section 72 that interconnects a distal section 74 that defines a first end, and a proximal section 76 that defines a second end. Both the distal section 74 and the proximal section 76 are angled in relation to the middle section 72, the proximal section 76 being almost perpendicular and the distal section 74 being angular by about 45 degrees (preferably 20 to 70 degrees) in relation to the section average. Bend 75 is formed along the middle section 72 to provide lateral space between connections 68, 70 and jaws 44, 46 (see, for example, Figure 1). As best seen in Figure 2, the distal sections 74 of the first and second connections 68, 70 are fixed (non-rotationally) attached to the claws 44, 46 at points 81, while the proximal sections are slidable and articulated to the flanges 56 .58 of the driver 48 through pins 80 fitted through the slots 57, 59 in them. Connection points 81 are formed at a midpoint of the first and second jaws 44, 46, that is, anywhere between the proximal ends 66, 68 and the distal ends 60, 62 of the first and second jaws 44, 46 .
[0029] [0029] The housing 42 is shown in Figure 6. The housing is a tubular member that defines three pairs of opposite slots, called first connection slits 82, second connection slots 84, and claw slits 86. The slots are for guiding the first and second connections 68, 70 and the jaws 44, 46. In relation to a longitudinal axis of the housing 42, the jaw slits 86 are parallel to the axis and separated laterally (that is, parallel and coexisting in a jaw plane) side) while the first and second connection slots 82, 84 are vertically spaced from the claw slits 86 (i.e., above and below). The first and second connecting slots 82, 84 include distal portions 83, 85 that are angled towards each other (vertically inward) and extend through the claw slits 86.
[0030] [0030] The internal passage 43 of the housing 42 extends through the distal end of the housing 42, and it is through this passage 43 that the first and second jaws 44, 46 can be extended. Additionally, as shown in Figures 1 to 4, the distal end of housing 42 defines the opposite slots 45 (vertically opposite) that are dimensioned to allow the first and second jaws 44, 46 and the first and second connections 68, 70 pass through them when they rotate radially outward. Consequently, it is also clear from Figures 1 and 2 that the housing 42 serves to block the rotation of the first and second connections 68, 70 when they are totally or partially contained within the internal passage 43 of the housing 42. Suitable plastics for forming The housing includes, but is not limited to, polytetrafluoroethylene (PTFE), expanded polytetrafluoroethylene (EPTFE), polyethylene ether ketone (PEEK), polyvinyl chloride (PVC), polycarbonate (PC), polyamide, polyimide, polyurethane, polyethylene (high, medium or low density), and suitable metals include stainless steel, nitinol and similar medical grade metals and alloys.
[0031] [0031] The proximal ends 64, 66 of claws 44, 46 are pivotally attached to the housing 42 directly through a shared pin 87 which extends through the two proximal ends 64, 66 and through opposite claw slits 86 formed in the housing. By virtue of the claw slits 86, the claws 44, 46 are attached either pivotally or slidably to the housing 42. The opposite claw slits 86 then act and define a claw guiding surface of the housing 42 that guides the longitudinal movement of the claws 44, 46 in relation to the accommodation. The distal ends of the claw slits 86 also serve to restrict the longitudinal movement of the claws 44, 46 in relation to the housing 42. It will be recognized that the claw guide surface can also be formed by channels, recesses or other structures formed in the housing 42, instead of, or in conjunction with, the claw slits 86. During assembly, the slots allow the device pins 40 to be inserted after the claws, connections and drivers are positioned with the housing, and the slots can subsequently be covered with a glove, band, secondary housing or other material, if desired.
[0032] [0032] The proximal ends of the first and second connections 68, 70 are slidable and articulated fixed to the housing 42 by means of the two pins, each denoted by the numeral 80. The pins are fitted in the first and second connection slots 82, 84 which then define the first and second connecting guide surfaces of the housing 42 that guide the longitudinal movement of the first and second connections 68, 70 with respect to the housing 42. Because the pins 80 are also connected to the flanges 57, 59 of the driver 48, the movement of the drive wire 22 can be transferred to the connections 68, 70 and the claws 44, 46. As with the claw guide surface, the first and second connecting guide surfaces can also be formed by channels, recesses or other structures formed in housing 42, instead of, or in conjunction with, the first and second connecting slots 82, 84.
[0033] [0033] Consequently, it will be recognized that the claw guide surface (formed by slits 86) is arranged parallel to the claw plane that extends through the longitudinal axis of the housing 42, and the first connecting guide surface (formed by slits 82 ) extends along a first connection path (vertically) away from the claw plane, and the second connection guide surface (formed by slots 84) extends along a second connection path away (vertically) from the claw plane claw. The distal portions 83, 85 of the first and second connecting slots 82, 84 are angled in such a way that the distal portions of the first and second connecting paths extend vertically towards the claw plane, then guiding the opening / closing of claws 44, 46, as will be further discussed in this document. It will also be recognized that the first jaw 44 is positioned substantially on a first side of the jaw plane, and the second jaw 46 is positioned substantially on a second side of the jaw plane, while the middle section 72 of the first connection 68 is positioned on the second side of the claw plane, and the middle section 72 of the second connection 70 is positioned on the first side of the claw plane.
[0034] [0034] As shown in Figures 1 to 4, flanges 56, 58 at the distal end of the driver 48 extend around the proximal sections 76 of the first and second connections 68, 70, and abut the proximal ends 64, 66 of the first and the second jaws 44, 46 to first expose, and then open the jaws 44, 46, as shown in Figures 1 and 2. By measuring the distance between pins 80, 86 and the distal ends of the slits 82, 84, 86 in the housing 42, in relation to the guide surface formed by the slits 82, 84, 86, the movement of the claws 44, 46 is carried out and controlled. The distal translation of the drive wire 22 and driver 48 causes the distal translation of the claws 44, 46 to an extended position outside the housing 42 where at least a portion of the claws 44, 46 is exposed. As the claw pin 87 continues to be moved distally, it passes the point where the slits 82, 84 pass through the claw of the slits 86, over which the connecting pins 80 follow the angular distal portions 83, 85 of the first and of the second connection slots 82, 84. Thus, the additional distal translation of the drive wire 22 and driver 48 causes the pins 80 to be moved vertically and slide into the slots 57, 59 formed in the driver flanges 56, 58 , which in turn, rotate the claws 44, 46 around their shared claw pin 87.
[0035] [0035] For example, with reference to Figure 7, since the claw pin 87 is vertically secured by the slits 86, the upward movement of the proximal section 76 of the second connection 70 (that is, along the distal portion 85 of the slits 84) causes the downward movement of the distal section 74 of the second connection 70 as it is attached to the second claw 46 which is articulated to housing 42 via pin 87 and claw slits 86. Likewise, the downward movement of the section proximal 76 of the first connection 68 (that is, along the distal portion 83 of slots 82) causes the upward movement of section 74 of the first connection 68, and in turn, the upward rotation of the first jaw 44. Thus, the claws 44, 46 rotate outward to an open tissue receiving position shown in Figures 1 and 2.
[0036] [0036] Subsequently, the connecting pins 80 reach the end of the connecting slots 82, 84, at the point where the claws 44, 46 are completely open. Claws 44, 46 were shown to rotate by about 75 °, thus forming a 150 ° gap between them, however, housing 42 and its slits can be measured to allow rotation through a full 90 ° or more, forming then, at least 180 ° between them. The slots in the housing 42 are dimensioned to allow rotation of the claws 44, 46 and connections 68, 70 outside the housing, and these slits 45 can also be used to limit their rotation, additionally, or separately from the size of the slits 82, 84, 86. It will then be seen that the distance and location of pins 80 (at the ends of the first and second connections 68, 70) in relation to the proximal ends 64, 66 of jaws 44, 46 and pin 87 determine the rotation of the first and second claws between a closed and an open configuration.
[0037] [0037] Likewise, the proximal ends of the connections 68, 70 and their pins 80 are connected to the flanges 56, 58 of the driver 48 in such a way that the proximal retraction of the driver 48 (through the drive wire 22) causes the pins 80 follow the reverse path to close claws 44, 46, and in addition, the retraction causes the proximal retraction of claws 44, 46 to be directed to the internal space 43 of housing 42. As shown in Figures 9 and 10, since the claws 44, 46 are positioned in their tissue receiving configuration (open configuration, Figures 1 and 2) the medical device 40 and its claws 44, 46 can be around the T fabric and the claws 44, 46 can be rotated back towards its closed position. The T fabric was shown as a single layer, although multiple layers can be clamped between the claws 44, 46. The T fabric can then be gripped by the claws 44, 46, and the additional proximal retraction of the drive wire 22 and driver 48 will cause the claws 44, 46 to be moved longitudinally in a proximal direction (to the left of the page in Figures 9 to 10). Consequently, it can be seen that the medical device provides constant force transmission from the drive wire 22 through the driver 48 and connections 68, 70 to the jaws 44, 46 for smooth opening and closing of the jaws due to translation in both the distal and proximal directions .
[0038] [0038] For the purpose of the medical device 40 serving as a clamp and keeping its claw on the T fabric, or maintaining the clamping of two layers of tissue, one against the other, claws 44, 46 can be locked in position and the drive wire 22 of the medical system 20 can be disconnected from the medical device 40. As shown in Figure 11, the interior of housing 42 also defines a driver guide surface 88 (which guides driver 48) that has a proximal portion 88p and a distal portion 88d. The proximal portion 88p of the driver guide surface 88 has a width (measured above and below the page in Figure 11) that is greater than a width of the distal portion 88d of the driver guide surface 88. The driver guide surface 88 can be formed by opposite surfaces or C-shaped channels in housing 42. The transition between the proximal portion 88p and distal portion 88d defines a shoulder 89, and is called two shoulders 89a, 89b on opposite sides of housing 42. The shoulders 89a, 89b they are measured and positioned to engage the locking tabs 52, and in particular, the inclined portions 54, located on the driver 48.
[0039] [0039] As shown in Figure 11, when the driver 48 is located within the distal portion 88d of the driver guide surface 88, the locking tabs 52 are forced radially inwardly engaged by firm friction with the enlarged head 32 and / or the drive wire 22. Otherwise, the socket 50 formed by the driver 48 that receives the distal head 32 has an entrance that is narrow by the deflection into the locking tabs 52. In this state shown in Figure 11, the wire drive 22 is firmly engaged with driver 48, and then with first and second jaws 44, 46. When drive wire 22 and driver 48 are retracted proximally, for example, by attaching the fabric as shown in the Figures 9 to 10, the proximal end of the driver 48 is received within the proximal portion 88p of the third guide surface 88 which has a greater width that allows movement out of the locking tabs 52.
[0040] [0040] Consequently, in the state shown in Figure 12, the locking tabs 52 can be disconnected from the distal head 32 of the drive wire 22. In this way, the additional proximal movement of the drive wire 22 and its distal head 32 can be used to remove the distal head 32 from socket 50 of the driver 48. At the same time, the locking tabs 52 move radially outwardly and engage with shoulders 89a, 89b to lock the device 40 in a state where the T fabric is clamped between jaws 44, 46. In the event that the natural elasticity of T fabric tends to pull jaws 44, 46 out of the housing towards its extended position, locking tabs 52 will confine shoulders 89 of the driver guide surface of the housing 42 to prevent further distal movement or rotation of the claws 44, 46. Preferably, the locking tabs 52 are formed of a material that is plastically deformable, such as a metal or alloy (e.g. Nitinol), in such a way what they plastically deform outward to firmly engage housing 42 and keep fabric T between jaws 44, 46 and the distal end of housing 42.
[0041] [0041] Now back to Figures 13 and 14, still under additional proximal retraction of the drive wire 22 and distal head 32 (to the right of the page), the enlarged distal head 32 (or another enlarged portion of the drive wire 22) will confine the connection block 26, which is slidably fitted within the distal end 23 of the catheter 24. Sufficient proximal force in the drive wire 22 will overcome the friction adjustment between the connection block 26 and the proximal end of the housing 42, moving , then, the connection block 26 proximally to retract the connection block 26 inside the tubular connector 24, as shown in Figure 14. The catheter 24 can be used to provide a counter force in the housing 42 during the retraction proximally from the drive wire 22 and connection block 26. Consequently, the drive wire 22, catheter 24 and connection block 26 can be completely disconnected from the medical device 40, then leaving the first and second jaws 44, 4 6 and the housing 42 in a state that includes the T fabric clamped between the claws 44, 46 and maintained in vivo. The connection block 26 is held at the distal end 24 of the catheter 24 through the pins 30, which are positioned within the recessed area 27 to engage the proximal and distal ends of the connection block 26 and limit its longitudinal movement.
[0042] [0042] The elongated catheter 24 (or another elongated tubular member such as a box, tube, scope or the like), which slidably surrounds the drive wire 22, extends proximally along it to a proximal end of the system 20, and is of a suitable length to position the device 40 at any desired location within the body, while the proximal ends of the drive wire 22 and catheter 24 are positioned outside the body for use by the medical professional. Control loops (not shown) to control relative translation of the drive wire 22 and catheter 24 are well known in the art, and can be employed at the proximal end of system 20. Additional modalities of the connection / disconnection mechanisms and the medical system 20 can be disclosed in copending orders of US No. 13 / 270,834, 13 / 270,784, 13 / 270,852, and 12 / 971,873, filed on October 11, 2011 and December 17, 2010, the disclosures of which are hereby incorporated by reference in your wholeness.
[0043] [0043] The foregoing description of various embodiments of the invention has been presented for purposes of illustration and description. It is not intended to be exhaustive or to limit the invention to the precise details disclosed. Numerous modifications or variations are possible in light of the above teachings. The modalities discussed were chosen and described to provide the best illustration of the principles of the invention and its practical application has the objective of making, then, elements versed in the technique able to use the invention in various modalities and with several modifications being adapted to the private use contemplated. All such modifications and variations are included in the scope of the invention as determined by the appended claims when interpreted in accordance with the liberality to which they are suitably, legally, and equitably entitled.

权利要求:
Claims (6)
[0001]
Medical device (40) for engaging tissue, the medical device (40) comprising: a housing (42) defining an internal passage (43) and a longitudinal axis extending between the proximal and distal ends of the housing (42), the housing (42) defining a claw guide surface (86), a first surface connection guide (82) and a second connection guide surface (84), each of the guide surfaces (82, 84) extending between the proximal and distal portions of the guide surfaces (82, 84); a first claw (44) connected slidably and hingedly to the housing (42), the first claw (44) having proximal and distal ends, the first claw (44) received slidably within the internal passage (43) for movement longitudinally along the claw guide surface (86); a second claw (46) connected slidably and articulated to the housing (42), the second claw (46) having proximal and distal ends, the second claw (46) received slidably within the internal passage (43) for movement longitudinally along the claw guide surface (86); a first connection (68) having first and second ends, the first end fixedly fixed to an average longitudinal section of the first claw (44), the second end fixed slidably and articulated to the housing (42) for longitudinal movement along the first connecting guide surface (82); a second connection (70) having first and second ends, the first end fixedly fixed to a middle longitudinal section of the second claw (46), the second end fixed slidably and articulated to the housing (42) for longitudinal movement along the second connection guide surface (84); a driver (48) operatively connected to the first and second jaws (44, 46), the longitudinal movement of the driver (48) moving the first and second jaws (44, 46) longitudinally along the guide surface gripper (86) and moves the second ends of the first and second connections (68, 70) along the first and second connecting guide surfaces (82, 84), and where the distal portions of the first and second guide surfaces connectors (82, 84) are shaped in such a way that the longitudinal movement of the second ends of the first and second connections (68, 70) through them rotate the first and second claws (44, 46) in relation to the housing ( 42); a first link pivot pin that pivotally connects the second end of the first connection (68) to the housing (42), and a second link pivot pin that pivotally connects the second end of the second connection (70) to the housing (42) , wherein the driver (48) includes a distal end having at least one slot (45) that receives the first and second connecting pins, the at least one slot (45) being elongated and slidably receiving the first and the second connecting pins; and characterized by the fact that the claw guide surface (86) is arranged parallel to a claw plane that extends through the longitudinal axis, and in which the first connecting guide surface (82) extends along a first path of connection away from the claw plane, and the second connection guide surface (84) extends along a second connection path away from the claw plane.
[0002]
Medical device (40) according to claim 1, characterized in that the first and second connecting paths are spaced on opposite sides of the claw plane.
[0003]
Medical device (40) according to claim 1, characterized by the fact that the first and second claw guide surfaces (86) each have a proximal portion that extends parallel to the longitudinal axis, and a distal portion which extends transversely in relation to the proximal portion.
[0004]
Medical device (40) according to claim 3, characterized in that the distal portions of the first and second jaw guide surfaces (86) extend towards the jaw plane.
[0005]
Medical device (40) according to claim 1, characterized by the fact that the proximal ends of the first and second jaws (44, 46) are jointly fixed to the housing (42) on a shared jaw joint axis.
[0006]
Medical device (40) according to claim 1, characterized in that the second ends of the first and second connections (68, 70) are connected slidably and articulately to the housing (42).

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AU2011343659A1|2013-07-11|

WO2012083041A2|2012-06-21|

BR112013015246A2|2016-09-13|

CN103298416A|2013-09-11|

EP2651316A2|2013-10-23|

JP2014505520A|2014-03-06|

WO2012083041A3|2012-08-09|

CN103298416B|2015-11-25|

EP2651316B1|2016-07-06|

US8979891B2|2015-03-17|

JP5681814B2|2015-03-11|

AU2011343659B2|2015-01-15|

US20120165863A1|2012-06-28|

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法律状态:
2018-12-18| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|

2019-08-13| B06U| Preliminary requirement: requests with searches performed by other patent offices: suspension of the patent application procedure|

2020-04-14| B06A| Notification to applicant to reply to the report for non-patentability or inadequacy of the application according art. 36 industrial patent law|

2020-09-08| B09A| Decision: intention to grant|

2020-11-24| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 15/12/2011, OBSERVADAS AS CONDICOES LEGAIS. |

优先权:

申请号 | 申请日 | 专利标题

US42342010P| true| 2010-12-15|2010-12-15|

US61/423,420|2010-12-15|

US13/270,784|US8858588B2|2010-10-11|2011-10-11|Medical devices with detachable pivotable jaws|

US13/270,784|2011-10-11|

PCT/US2011/065200|WO2012083041A2|2010-12-15|2011-12-15|Medical devices with detachable pivotable jaws|

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