End execution assembly for anastomat and anastomat

Abstract

The utility model relates to an end executive component for an anastomat and the anastomat. The tail end execution assembly comprises a plier head part, a sleeve rotationally connected with the plier head part, a steering long connecting rod capable of driving the plier head part to rotate relative to the sleeve, a push blade inserted into the sleeve in a sliding mode and a push blade protection assembly, and the push blade protection assembly comprises a steering short connecting rod, a first anti-expansion plate and a second anti-expansion plate. The first anti-expansion plate and the second anti-expansion plate are arranged on the two opposite sides of the push cutter blade, the far end of the push cutter blade is clamped between the first anti-expansion plate and the second anti-expansion plate, and the steering short connecting rod and the steering long connecting rod are arranged on the outer side of the first anti-expansion plate and the outer side of the second anti-expansion plate respectively. The problem that the push blade is extruded after the plier head part turns or when the thrust is too large is avoided; the tail end execution assembly is compact in structure, good in stability and high in safety.

Description

Technical Field

[0001] The utility model belongs to the technical field of staplers, and in particular relates to an end execution assembly for a stapler and the stapler. Background Art

[0002] The stapler is a surgical instrument that replaces traditional manual suturing in surgical operations. It is easy to operate and can suturing reliably, with few side effects and surgical complications. The stapler mainly includes a stapler magazine, a stapler seat and a cutting knife. Its working principle is similar to that of a stapler. The stapler magazine is equipped with staplers for suturing. During the operation, as the cutting knife moves, the stapler cuts the tissue and pushes out the staplers to suturing the surgical site. Since the cutting knife pusher blade of the existing stapler is composed of multiple single-piece pusher blades, the cutting knife pusher blade is prone to extrusion when the stapler is fired after the head is swung or when firing thick tissue, resulting in surgical failure, inability to withdraw the stapler, and even safety issues. Summary of the invention

[0003] The purpose of the utility model is to provide an end execution assembly for a stapler with a push blade protection function, which can prevent the push blade from being squeezed out in the case of extreme firing or steering firing, and is safer and more reliable when used.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] An end effector assembly for a stapler, comprising:

[0006] Clamp head;

[0007] A sleeve, the distal end of which is rotatably connected to the clamp head through a connecting component;

[0008] A steering long connecting rod, which is slidably arranged on the sleeve along the length direction of the sleeve, the steering long connecting rod extends along the length direction of the sleeve, the distal end of the steering long connecting rod is rotatably connected to the clamp head, and the steering long connecting rod can drive the clamp head to rotate relative to the sleeve;

[0009] A push blade, which is composed of a plurality of push blades stacked in a single piece, and the push blade is slidably inserted in the sleeve;

[0010] A push blade protection assembly includes a steering short link, a first anti-expansion plate and a second anti-expansion plate. The steering short link is slidably arranged on the sleeve along the length direction of the sleeve, and the steering short link extends along the length direction of the sleeve. The distal end of the steering short link is rotatably connected to the clamp head. The steering short link and the steering long link are respectively arranged on opposite sides of the push blade. The distal ends of the first anti-expansion plate and the second anti-expansion plate are respectively fixedly connected to the clamp head. The proximal ends of the first anti-expansion plate and the second anti-expansion plate are respectively inserted in the sleeve, and the distal end of the push blade is clamped between the first anti-expansion plate and the second anti-expansion plate.

[0011] Since the cutting knife push blade is composed of multiple push blade single pieces stacked together, when a certain angle is formed between the forceps head and the sleeve, the push blade is pushed forward to cut tissue, or when the operator uses too much thrust when encountering thicker tissue, part or all of the push blade single pieces are easily deformed or squeezed out. The utility model provides anti-expansion plates on the opposite sides of the push blade, and adds a short steering link to cooperate with the long steering link to squeeze the far end of the push blade head, so as to avoid the problem of the push blade being squeezed out after the forceps head is turned or when the thrust is too large.

[0012] Preferably, the push blade assembly further comprises a first extrusion plate and a second extrusion plate inserted in the sleeve, wherein the first extrusion plate is located outside the first anti-expansion plate, and the second extrusion plate is located outside the second anti-expansion plate. The provision of the first extrusion plate and the second extrusion plate can further enhance the limiting effect of the first anti-expansion plate and the second anti-expansion plate on the push blade, and further prevent the push blade from being squeezed out.

[0013] Preferably, the sleeve is provided with a first slot for the long steering link to pass through and a second slot for the short steering link to pass through, the first slot extending from the distal end of the sleeve to its proximal end, and the second slot extending from the distal end of the sleeve to its proximal end. The long steering link and the short steering link are respectively clamped in the first slot and the second slot, making the structure more compact, while avoiding interference of foreign objects on the long steering link and the short steering link, and improving operational stability.

[0014] Preferably, a strip groove is provided on the sleeve, and the proximal end of the steering short link can be slidably engaged in the strip groove, which is conducive to limiting the steering short link, preventing it from falling out, and improving stability and safety.

[0015] Preferably, the first anti-expansion plate and the second anti-expansion plate respectively have a plurality of clamping parts, and a plurality of fitting parts capable of fitting with the clamping parts are formed inside the distal end of the sleeve to limit the first anti-expansion plate and the second anti-expansion plate.

[0016] Preferably, the proximal end of the pliers head is provided with a detachable first mounting seat and a second mounting seat, the distal end of the steering long link is connected to one side of the first mounting seat and the second mounting seat through a first pivot, and the distal end of the steering short link is connected to the other side of the first mounting seat and the second mounting seat through a second pivot, and the first pivot and the second pivot are distributed on opposite sides of the push blade.

[0017] Preferably, the connecting component includes a connecting block fixedly connected to the distal end of the sleeve and a third pivot pivotally connecting the connecting block and the first mounting seat and / or the second mounting seat, and the third pivot is located between the first pivot and the second pivot.

[0018] Further preferably, the upper and lower sides of the sleeve are respectively fixedly connected to the first connecting block and the second connecting block, the number of the third pivots is two, the first connecting block is rotatably connected to the mounting seat located on the same side through a third pivot, and the second connecting block is rotatably connected to another mounting seat located on the same side through another third pivot.

[0019] Furthermore, the distal ends of the first anti-expansion plate and the second anti-expansion plate are clamped between the proximal end of the clamp head and the first mounting seat and / or the second mounting seat.

[0020] The end execution assembly for the stapler of the utility model is easy to assemble and has a compact structure after assembly, and is also convenient for disassembly and replacement of components.

[0021] Preferably, the proximal end of the long steering link extends out of the proximal end of the sleeve portion.

[0022] Preferably, the sleeve comprises an upper portion and a lower portion which are detachably connected.

[0023] Preferably, the proximal end of the long steering connecting rod is provided with a steering hook, and the forceps head is driven to turn by pulling the steering hook toward the proximal end of the stapler or pushing the steering hook toward the distal end of the stapler.

[0024] Preferably, the clamp head comprises a nail anvil and a nail magazine seat, and the nail anvil and the nail magazine seat are hinged.

[0025] The second aspect of the utility model further provides a stapler, which comprises: the above-mentioned end effector assembly for the stapler, a firing assembly and a staple magazine.

[0026] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0027] The utility model provides anti-expansion plates on the opposite sides of the push blade and adds a short steering link, which cooperates with the long steering link to squeeze the far end of the push blade head, thereby avoiding the problem of the push blade being squeezed out when the clamp head is turned or the thrust is too large; the end execution component of the utility model has a compact structure, good stability and high safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are merely embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 Schematic diagram of the structure of the end effector assembly of the embodiment (the upper part of the sleeve is not shown);

[0030] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0031] Figure 3 for Figure 1 Exploded diagram of

[0032] Figure 4 for Figure 3 The enlarged view of point B in the middle;

[0033] Figure 5 Schematic diagram of the top view of the end effector assembly of the embodiment (the upper part of the sleeve is not shown);

[0034] Figure 6 It is a schematic diagram of the top view of the structure of the end effector assembly of the embodiment after the clamp head is rotated to one side (the upper part of the sleeve is not shown);

[0035] Figure 7 It is a schematic diagram of the top view of the structure of the end effector assembly of the embodiment after the clamp head is rotated to the other side (the upper part of the sleeve is not shown);

[0036] In the above drawings, 1, clamp head; 2, sleeve; 21, first mounting seat; 22, second mounting seat; 3, steering long connecting rod; 31, steering hook; 4, push blade; 51, steering short connecting rod; 52, first anti-expansion plate; 53, second anti-expansion plate; 54, first extrusion plate; 55, second extrusion plate; 61, first pivot; 62, second pivot; 63, third pivot; DETAILED DESCRIPTION

[0037] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0038] In the description of the present invention, it is necessary to understand that the distal end refers to the end of the instrument or component away from the operator, and the proximal end refers to the end of the instrument or component close to the operator; the inside and the outside are positions defined by the distance relative to the center of the instrument or component, wherein the inside is a position close to the center of the instrument or component, and the outside is a position far from the center of the instrument or component. The description of the above-mentioned directional words is only for the convenience of describing the embodiments of the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0039] In the description of the present utility model, unless otherwise clearly specified and limited, the terms "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0040] In the description of the present invention, a plurality refers to two or more.

[0041] Each component of the utility model can be made of materials commonly used in the art.

[0042] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0043] Example

[0044] like Figures 1 to 7 As shown, this embodiment provides an end effector assembly for a stapler, which comprises a clamp head 1, a sleeve 2, a long steering link 3, a push blade 4 and a push blade protection assembly.

[0045] Specifically, the clamp head 1 includes a nail support seat and a nail magazine seat hinged to the nail support seat, and the clamp head 1 is rotatably connected to the distal end of the sleeve 2 through a connecting component. The steering long connecting rod 3 is slidably arranged on the sleeve 2 along the length direction of the sleeve 2, and the steering long connecting rod 3 extends along the length direction of the sleeve 2. The distal end of the steering long connecting rod 3 is rotatably connected to the clamp head 1, and the steering long connecting rod 3 can drive the clamp head 1 to rotate relative to the sleeve 2. The push blade 4 is composed of a plurality of push blades stacked in a single piece, and the push blade 4 is slidably inserted in the sleeve 2. The push blade protection assembly includes a steering short link 51, a first anti-uplift plate 52 and a second anti-uplift plate 53. The steering short link 51 is slidably arranged on the sleeve 2 along the length direction of the sleeve 2. The steering short link 51 extends along the length direction of the sleeve 2. The distal end of the steering short link 51 is rotatably connected to the clamp head 1. The steering short link 51 and the steering long link 3 are arranged on opposite sides of the push blade 4. The distal ends of the first anti-uplift plate 52 and the second anti-uplift plate 53 are respectively connected to the clamp head 1. The proximal ends of the first anti-uplift plate 52 and the second anti-uplift plate 53 are respectively inserted in the sleeve 2, and the distal end of the push blade 4 is clamped between the first anti-uplift plate 52 and the second anti-uplift plate 53.

[0046] In this embodiment, the push blade assembly further includes a first extrusion plate 54 and a second extrusion plate 55 inserted in the sleeve 2, the first extrusion plate 54 is located outside the first anti-rising plate 52, and the second extrusion plate 55 is located outside the second anti-rising plate 53. The provision of the first extrusion plate 54 and the second extrusion plate 55 can further enhance the limiting effect of the first anti-rising plate 52 and the second anti-rising plate 53 on the push blade 4.

[0047] In this embodiment, the sleeve 2 is provided with a first groove for the long steering link 3 to pass through and a second groove for the short steering link 51 to pass through, the first groove extending from the distal end of the sleeve 2 to its proximal end, and the second groove extending from the distal end of the sleeve 2 to its proximal end. The long steering link 3 and the short steering link 51 are respectively clamped in the first groove and the second groove, making the structure more compact, while avoiding interference of foreign objects on the long steering link 3 and the short steering link 51, and improving operational stability.

[0048] In this embodiment, a strip groove is provided on the sleeve 2, and the proximal end of the steering short link 51 can be slidably engaged in the strip groove, which is beneficial to restrict the steering short link 51 and prevent it from falling out, thereby improving stability and safety.

[0049] In this embodiment, the first anti-uplift plate 52 and the second anti-uplift plate 53 respectively have a plurality of snap-fitting parts, and a plurality of fitting parts that can be snap-fitted with the snap-fitting parts are formed inside the distal end of the sleeve 2 to limit the first anti-uplift plate 52 and the second anti-uplift plate 53 to a certain extent.

[0050] In this embodiment, the proximal end of the clamp head 1 is provided with a detachable first mounting seat 21 and a second mounting seat 22, the distal end of the steering long link 3 is connected to one side of the first mounting seat 21 and the second mounting seat 22 through a first pivot 61, and the distal end of the steering short link 51 is connected to the other side of the first mounting seat 21 and the second mounting seat 22 through a second pivot 62, and the first pivot 61 and the second pivot 62 are distributed on opposite sides of the push blade 4. The upper and lower sides of the sleeve 2 are respectively fixedly connected to the first connecting block and the second connecting block, and the number of the third pivots 63 is two. The first connecting block is rotatably connected to the mounting seat on the same side through a third pivot 63, and the second connecting block is rotatably connected to another mounting seat on the same side through another third pivot 63. The distal ends of the first anti-rising plate 52 and the second anti-rising plate 53 are clamped between the proximal end of the clamp head 1 and the first mounting seat 21 and the second mounting seat 22.

[0051] In this embodiment, the proximal end of the steering long connecting rod 3 extends out of the proximal end of the sleeve 2, and a steering hook 31 is provided at the proximal end of the steering long connecting rod 3. The clamp head 1 is driven to steer by pulling the steering hook 31 toward the proximal end of the stapler or pushing the steering hook 31 toward the distal end of the stapler.

[0052] In this embodiment, the sleeve 2 is composed of two detachably connected upper and lower parts. In order to facilitate the display of the internal structure, the upper part of the sleeve 2 is not shown in the drawings.

[0053] In this embodiment, an anti-expansion plate and an extrusion plate are arranged on opposite sides of the push blade 4, and a short steering link 51 is added on one side to cooperate with the long steering link 3 on the other side to squeeze the far end of the push blade head, so as to avoid the problem of the push blade 4 being squeezed out after the clamp head 1 is turned or when the thrust is too large. In particular, when the clamp head 1 is turned, the short steering link 51 cooperates with the movement of the long steering link 3 to form pressure on both sides of the far end of the push blade head to prevent the push blade 4 from being squeezed out due to uneven force on both sides of the push blade head (see Figure 6 , Figure 7 ). The end-effector assembly of this embodiment has a compact structure, good stability and high safety.

[0054] The end effector assembly of the present embodiment cooperates with the existing firing assembly and the stapler magazine to be quickly assembled into a stapler, which is simple and convenient to operate.

[0055] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An end effector assembly for a stapler, characterized in that: It includes: Clamp head; A sleeve, the distal end of which is rotatably connected to the clamp head through a connecting component; A steering long connecting rod, which is slidably arranged on the sleeve along the length direction of the sleeve, the steering long connecting rod extends along the length direction of the sleeve, the distal end of the steering long connecting rod is rotatably connected to the clamp head, and the steering long connecting rod can drive the clamp head to rotate relative to the sleeve; A push blade, which is composed of a plurality of push blades stacked in a single piece, and the push blade is slidably inserted in the sleeve; A push blade protection assembly includes a steering short link, a first anti-expansion plate and a second anti-expansion plate. The steering short link is slidably arranged on the sleeve along the length direction of the sleeve, and the steering short link extends along the length direction of the sleeve. The distal end of the steering short link is rotatably connected to the clamp head. The steering short link and the steering long link are arranged on opposite sides of the push blade. The distal ends of the first anti-expansion plate and the second anti-expansion plate are respectively connected to the clamp head, and the proximal ends of the first anti-expansion plate and the second anti-expansion plate are respectively inserted into the sleeve, and the distal end of the push blade is clamped between the first anti-expansion plate and the second anti-expansion plate.

2. The end effector assembly for a stapler according to claim 1, characterized in that: The push blade assembly also includes a first extrusion plate and a second extrusion plate which are inserted in the sleeve, wherein the first extrusion plate is located on the outer side of the first anti-expansion plate, and the second extrusion plate is located on the outer side of the second anti-expansion plate.

3. The end effector assembly for a stapler according to claim 1, characterized in that: The sleeve is provided with a first slot for the long steering link to pass through and a second slot for the short steering link to pass through. The first slot extends from the distal end of the sleeve to its proximal end, and the second slot extends from the distal end of the sleeve to its proximal end.

4. The end effector assembly for a stapler according to claim 1, characterized in that: The sleeve is provided with a strip groove, and the proximal end of the steering short connecting rod can be slidably clamped in the strip groove.

5. The end effector assembly for a stapler according to claim 1, characterized in that: The first anti-inflation plate and the second anti-inflation plate respectively have a plurality of clamping parts, and a plurality of fitting parts capable of being clamped with the clamping parts are formed inside the distal end of the sleeve.

6. The end effector assembly for a stapler according to claim 1, characterized in that: The proximal end of the pliers head is provided with a detachable first mounting seat and a second mounting seat, the distal end of the steering long connecting rod is connected to one side of the first mounting seat and the second mounting seat through a first pivot, and the distal end of the steering short connecting rod is connected to the other side of the first mounting seat and the second mounting seat through a second pivot, and the first pivot and the second pivot are distributed on opposite sides of the push blade.

7. The end effector assembly for a stapler according to claim 6, characterized in that: The connecting component includes a connecting block fixedly connected to the distal end of the sleeve and a third pivot pivotally connecting the connecting block and the first mounting seat and / or the second mounting seat, and the third pivot is located between the first pivot and the second pivot.

8. The end effector assembly for a stapler according to claim 6, characterized in that: The distal ends of the first anti-expansion plate and the second anti-expansion plate are clamped between the proximal end of the clamp head and the first mounting seat and / or the second mounting seat.

9. The end effector assembly for a stapler according to claim 1, characterized in that: The proximal end of the long steering link extends out of the proximal end of the sleeve portion; and / or, the sleeve comprises an upper portion and a lower portion that are detachably connected; And / or, a steering hook is provided at the proximal end of the long steering link; And / or, the clamp head includes a nail anvil and a nail magazine seat, and the nail anvil and the nail magazine seat are hinged.

10. A stapler, characterized in that: The stapler comprises: an end effector assembly, a firing assembly and a staple magazine for the stapler according to any one of claims 1 to 9.

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