Nail anvil of anastomat

Abstract

The utility model discloses an anastomat nail anvil, and relates to the field of anastomats, the anastomat nail anvil comprises a cover body assembly arranged on one side of a nail anvil assembly, a clamping assembly used for clamping the tail of the nail anvil and the tail of a cover body is arranged on the tail of the nail anvil, and the clamping assembly comprises clamping blocks movably arranged on the two sides of the tail of the nail anvil; the clamping blocks are located in the corresponding first sliding grooves and transversely slide, the tail of the cover body is fixedly connected with the clamping blocks in a clamped mode, the inner sides of the two clamping blocks are fixedly connected with connecting plates through connecting rods, the connecting plates are movably arranged in the tail of the nail anvil, and one sides of the connecting plates are fixedly connected with drawing rods. According to the device, when the cover body assembly needs to be detached, the two drawing rods are pulled, then force is applied to enable the two drawing rods to be close to each other, the two indirect clamping blocks slide towards the interior of the first sliding groove, the two clamping blocks clamped in the clamping grooves originally slide out of the clamping grooves, then the tail of the cover body can be detached from the tail of the nail anvil, manual force is not needed, and the operation is convenient. And labor is saved.

Description

Technical Field

[0001] This application relates to the field of staplers, and more particularly to a stapler anvil. Background Technology

[0002] The working principle of a stapler is to use titanium staples to sever or anastomose human tissue, similar to a stapler. It includes an abutment that can be opened or closed and a staple cartridge.

[0003] For example, patent CN221129942U discloses an anvil assembly for a stapler, but it still has the following shortcomings in practical use:

[0004] When the locking block on the anvil body is inserted into the slot on the cover, force is applied to move the two arc-shaped side wings away from each other to allow the locking block to engage. When it is necessary to remove the locking block on the anvil body from the slot on the cover, force is applied to move the two arc-shaped side wings away from each other to allow the locking block to disengage from the slot, making the operation complicated. Utility Model Content

[0005] To address the issue of complex operation when the block is disengaged from the slot, this application provides an anvil for an anastomosis device.

[0006] The anvil of the stapler provided in this application adopts the following technical solution:

[0007] An anvil for an anastomosis device includes a cover assembly disposed on one side of the anvil assembly. The anvil assembly includes an anvil head and an anvil tail fixed to both ends of the anvil body. The cover assembly includes a cover head and a cover tail fixed to both ends of the cover body. A mounting groove is formed in the middle of one side of the anvil body, and the cover body is disposed in the mounting groove. A locking assembly for engaging the anvil tail and the cover tail is provided on the anvil tail. The locking assembly includes locking blocks movably disposed on both sides of the anvil tail. The locking blocks are located in corresponding sliding grooves and can slide laterally. The cover tail is locked and fixed to the locking blocks. A connecting plate is fixed to the inner side of each of the two locking blocks through a connecting rod. The connecting plate is movably disposed in the anvil tail. A pull rod is fixed to one side of the connecting plate.

[0008] By adopting the above technical solution, the connection between the anvil body and the cover body is achieved by snapping the anvil tail with the cover body tail. The snapping replaces part of the welding operation, which improves the assembly efficiency and connection reliability of the two. The snapping operation is simple and has high stability.

[0009] Preferably, the card block is a right-angled triangular card block, and the bottom of the card block is a slope.

[0010] By adopting the above technical solution, by setting the locking block to a right-angled triangle shape, when the tail of the cover is moved down and installed on the top of the tail of the anvil, the inclined surface of the right-angled triangle locking block abuts against the top of the side wings on both sides of the tail of the cover. Then the inclined surface of the right-angled triangle locking block is subjected to force. Through the decomposition of force, it can be seen that the right-angled triangle locking block is subjected to a force in the direction of the slide groove, and then the locking block slides into the slide groove, so that the tail of the cover can be smoothly installed on the tail of the anvil.

[0011] Preferably, both sides of the anvil tail are provided with a sliding groove that matches the shape of the locking block. The locking block is located in the sliding groove and can slide laterally. A spring with its other end fixed to the inner side of the sliding groove is fixed to the inner side of the locking block.

[0012] By adopting the above technical solution, when the right-angled triangular locking block slides into the groove, it compresses the spring. When the tail of the cover is fully installed on the top of the anvil tail, the locking block corresponds exactly to the locking grooves on both sides of the tail of the cover. Then, under the action of the spring, the locking block rebounds and locks into the locking groove, with the top of the locking block abutting against the top of the inner cavity of the locking groove, and the sides of the locking block abutting against the sides of the inner cavity of the locking groove, avoiding play and preventing the locking block from shaking in the locking groove. At the same time, the locking block cannot be pulled out of the locking groove, thus locking and fixing the tail of the cover to the tail of the cover. The locking operation replaces part of the welding operation, improving the assembly efficiency and reliability of the connection. The locking operation is simple and has high stability.

[0013] Preferably, the anvil tail is provided with a pair of sliding grooves that are adapted to the shape of the connecting plate. The connecting plate is located in the sliding grooves and can slide laterally. The anvil tail is provided with a through hole that is adapted to the shape of the connecting rod. The end of the connecting rod away from the locking block passes through the through hole and is fixed to the outside of the connecting plate.

[0014] By adopting the above technical solution, the connecting rod is adapted to the through hole, and when the connecting rod slides in the through hole, it avoids shaking in the through hole, thus improving stability.

[0015] Preferably, the through hole is connected to both the first slide groove and the second slide groove.

[0016] By adopting the above technical solution, when the connecting plate slides in the second slide, the connecting rod can drive the locking block to slide in the first slide, so that they are linked.

[0017] Preferably, the anvil body is provided with a plurality of nail-stopping grooves on the side away from the mounting groove. The nail-stopping grooves include teardrop-shaped grooves arranged symmetrically on the left and right sides, and the ends of two teardrop-shaped grooves are connected by an arc-shaped channel.

[0018] By adopting the above technical solution, the teardrop-shaped groove opening area is larger and the arc-shaped channel width is wider, providing sufficient guidance and direction even if the suture tip deviates slightly. This greatly improves the suture formation effect and ensures surgical quality.

[0019] Preferably, the cover head is welded to the anvil head.

[0020] By adopting the above technical solution, the head of the cover is bent towards the anvil body to form a flange, the anvil head is located inside the cavity formed by the flange, and the flange wraps the anvil head inside and achieves welding.

[0021] Preferably, the main body of the cover has an arc-shaped structure and protrudes in a direction away from the main body of the anvil.

[0022] By adopting the above technical solution, the outer peripheral wall of the arc-shaped cover body is relatively smooth, which can avoid damage to the internal tissues of the human body. After the convex cover body is fixed with the anvil body, a cavity is formed between the two for the blade to slide.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. By setting up a snap-fit ​​assembly, the anvil tail is snapped into the cover body tail to achieve the connection between the anvil body and the cover body. The snap-fit ​​replaces part of the welding operation, which improves the assembly efficiency and connection reliability of the two. The snap-fit ​​operation is simple and has high stability.

[0025] 2. When the tail of the cover is lowered and installed on top of the tail of the anvil, the right-angled triangular locking block slides into the first groove under force, allowing the tail of the cover to be smoothly installed on the tail of the anvil. When the tail of the cover is fully installed on top of the tail of the anvil, the locking block corresponds to the locking groove on both sides of the tail of the cover. Then, under the action of the spring, the locking block rebounds and engages in the locking groove, thus locking and fixing the tail of the cover to the tail of the anvil. The locking is effortless and convenient. When it is necessary to disassemble the cover assembly, pull the two pull rods, and then apply force to bring the two pull rods closer together. The two locking blocks slide into the first groove, so that the two locking blocks that were originally engaged in the locking groove slide out of the locking groove, thus allowing the tail of the cover to be removed from the tail of the anvil without manual force, saving effort and time. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of this application;

[0027] Figure 2 This is an exploded view of the structure of the anvil assembly and the cover assembly of this application;

[0028] Figure 3 This is a schematic diagram of the anvil assembly structure of this application;

[0029] Figure 4 This is a schematic diagram of the card connector structure of this application;

[0030] Figure 5 This is a schematic diagram of the anvil groove structure of this application.

[0031] Reference numerals: 2. Cover assembly; 21. Cover head; 22. Cover tail; 23. Cover body; 3. Anvil assembly; 31. Anvil body; 32. Knife groove;

[0032] 33. Anvil groove; 331. Teardrop-shaped groove; 332. Arc-shaped channel;

[0033] 34. Head of the anvil; 35. Tail of the anvil;

[0034] 36. Snap-fit ​​assembly; 361. Snap-fit ​​block; 362. Slide groove one; 363. Spring; 364. Connecting rod; 365. Connecting plate; 366. Slide groove two; 367. Pull-out rod; 3671. Fixed rod; 3672. Movable rod; 368. Snap-fit ​​groove; 369. Through hole;

[0035] 37. Mounting slot. Detailed Implementation

[0036] The following is in conjunction with the appendix Figures 1-5 This application will be described in further detail.

[0037] This application discloses a stapler anvil.

[0038] Reference Figures 1-3 , Figure 5 An anvil for an anastomosis device includes a cover assembly 2 fixed to one side of an anvil assembly 3. The anvil assembly 3 includes an anvil head 34 and an anvil tail 35 fixed to both ends of an anvil body 31. The cover assembly 2 includes a cover head 21 and a cover tail 22 fixed to both ends of a cover body 23. An installation groove 37 is formed in the middle of one side of the anvil body 31. The cover body 23 is located in the installation groove 37. The protruding side of the arc-shaped cover body 23 is away from the anvil body 31. A knife groove 32 for the knife body to pass through is formed in the center of the anvil body 31. The cover head 21 is bent towards the anvil body 31 to form a flange. The anvil head 34 is located inside the cavity formed by the flange and is welded. The cross-sectional area of ​​both gradually decreases from back to front.

[0039] Several anvil grooves 33 are formed on the side of the anvil body 31 away from the cover assembly 2, and several anvil grooves 33 are symmetrically distributed on both sides of the knife groove 32. The anvil grooves 33 include teardrop-shaped grooves 331 arranged symmetrically on the left and right. The width of the teardrop-shaped grooves 331 gradually increases from the first end to the last end and then gradually decreases. The two ends of the arc-shaped channel 332 are respectively connected to the ends of the two connected teardrop-shaped grooves 331. The arc-shaped channel 332 is an inwardly protruding arc-shaped channel 332.

[0040] The outer periphery of the arc-shaped cover body 23 is relatively smooth, which can avoid damage to the internal tissues of the human body. After the convex cover body 23 is fixed with the anvil body 31, a cavity is formed between the two for the knife body to slide.

[0041] Reference Figure 4 The snap-fit ​​assembly 36 is located inside the anvil tail 35. The snap-fit ​​assembly 36 is used to snap and fix the anvil tail 35 to the cover tail 22. The snap-fit ​​assembly 36 includes snap-fit ​​blocks 361 on both sides of the anvil tail 35. Two slide grooves 362 are symmetrically opened on both sides of the anvil tail 35. The snap-fit ​​blocks 361 on both sides are located in the slide grooves 362 on both sides and the surface of the snap-fit ​​blocks 361 abuts against the inner wall of the slide grooves 362. The lateral depth of the slide grooves 362 is greater than the width of the snap-fit ​​blocks 361 so that the snap-fit ​​blocks 361 can slide laterally in the slide grooves 362. The snap-fit ​​blocks 361 are right-angled triangular snap-fit ​​blocks 361. A spring 363 is fixedly connected to the center of the inner side of the snap-fit ​​blocks 361. The end of the spring 363 away from the snap-fit ​​blocks 361 is fixedly connected to the center of the inner cavity of the slide grooves 362 away from the snap-fit ​​blocks 361.

[0042] Two connecting rods 364 are fixedly connected to the center of the inner side of the two locking blocks 361. Two through holes 369 are opened at the tail of the anvil and are connected to the first slide groove 362 on the same side. The ends of the two connecting rods 364 away from the locking blocks 361 pass through the corresponding through holes 369 and are fixedly connected to the connecting plates 365. Two slide grooves 366 connected to the through holes 369 are symmetrically opened in the tail of the anvil 35. The two connecting plates 365 are located in the corresponding slide grooves 366 and the two sides, top and bottom of the connecting plates 365 are in contact with the inner wall of the slide grooves 366. The lateral depth of the slide grooves 366 is greater than the height of the connecting plates, so that the connecting plates 365 can slide laterally in the slide grooves 366. The pull rod 367 is fixedly connected to the center of the side of the connecting plate 356 away from the connecting rods 364. The pull rod 367 includes a movable rod 3672 that is slidably connected to the fixed rod 3671.

[0043] When the movable rod 3672 is not pulled out, it is located in the second slide groove 366. When the movable rod 3672 is pulled out to its maximum state, its top passes through the second slide groove 366 and extends to the outside. The movable rod 3672 will not automatically slide down due to gravity when it is pulled out and extended.

[0044] When the tail of the cover 22 is lowered and installed on top of the tail of the anvil 35, the inclined surface of the right-angled triangular locking block 361 abuts against the top of the side wings on both sides of the tail of the cover 22, and thus the inclined surface of the locking block 361 is subjected to force. Through force decomposition, it can be seen that the locking block 361 is subjected to a force in the direction of the slide groove 362, and thus the locking block 361 slides into the slide groove 362, so that the tail of the cover 22 can be smoothly installed on top of the anvil tail 35. When the tail of the cover 22 is fully installed on top of the anvil tail 35, the locking block 361... Block 361 corresponds exactly to the slots 368 on both sides of the tail 22 of the cover. Under the action of spring 363, the block 361 rebounds and engages in the slot 368, and the top of the block 361 abuts against the top of the inner cavity of the slot 368. At the same time, the block 361 cannot be pulled out from the slot 368, thus locking and fixing the tail 22 of the cover to the tail 22 of the cover. The engagement replaces part of the welding operation, which improves the assembly efficiency and reliability of the connection. The engagement operation is simple and has high stability.

[0045] When disassembly is required, the movable rod 3672 is pulled out of the slide groove 366 by pulling the movable rod 3672. Then, force is applied to bring the two movable rods 3672 closer together, which in turn causes the connecting plate 365 to slide away from the locking block 361 in the slide groove 366. Then, under the action of the connecting rod 364, the locking blocks 361 are brought closer together, and the locking blocks 361 that were originally locked in the locking groove 378 slide out of the locking groove 362 and are no longer locked in the locking groove 368. Then, the tail of the cover 22 can be removed from the tail of the anvil 35 without manual force, which is labor-saving and quick.

[0046] The implementation principle of the anvil of a stapler according to an embodiment of this application is as follows: When the tail of the cover 22 is lowered and installed on the top of the tail of the anvil 35, the inclined surface of the right-angled triangular locking block 361 abuts against the top of the side wings on both sides of the tail of the cover 22, and thus the inclined surface of the locking block 361 is subjected to force. Through force decomposition, it can be seen that the locking block 361 is subjected to a force in the direction of the sliding groove 362, and thus the locking block 361 slides into the sliding groove 362, so that the tail of the cover 22 can be smoothly installed on the top of the tail of the anvil 35. When the tail of the cover 22 is completely installed on the top of the tail of the anvil 35, the locking block 361... Block 361 corresponds exactly to the slots 368 on both sides of the tail 22 of the cover. Under the action of spring 363, block 361 rebounds and engages in the slot 368. The top of block 361 abuts against the top of the inner cavity of slot 368, and the sides of block 361 abut against the sides of the inner cavity of slot 368. This prevents play and avoids block 361 from shaking in slot 368. At the same time, block 361 cannot be pulled out of slot 368, thus locking and fixing the tail 22 of the cover to the tail 22 of the cover.

[0047] The head 21 of the cover is bent toward the anvil body 31 to form a flange. The head 34 of the anvil is located inside the cavity formed by the flange. The flange wraps the head 34 of the anvil inside and achieves welding. At the same time, the tail 35 of the anvil is connected to the tail 22 of the cover by a snap-fit. The snap-fit ​​replaces part of the welding operation, which improves the assembly efficiency and reliability of the connection. The snap-fit ​​operation is simple and has high stability.

[0048] When disassembly is required, the movable rod 3672 is pulled out of the slide groove 366 by pulling the movable rod 3672. Then, force is applied to bring the two movable rods 3672 closer together, which in turn causes the connecting plate 365 to slide away from the locking block 361 in the slide groove 366. Then, under the action of the connecting rod 364, the locking blocks 361 are brought closer together, and the locking blocks 361 that were originally locked in the locking groove 378 slide out of the locking groove 362 and are no longer locked in the locking groove 368. Then, the tail of the cover 22 can be removed from the tail of the anvil 35 without manual force, which is labor-saving and quick.

[0049] The above are merely optional embodiments of this disclosure and are not intended to limit this disclosure. Various modifications and variations can be made to this disclosure by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A stapler anvil, comprising a cover assembly (2) disposed on one side of an anvil assembly (3), the anvil assembly (3) comprising an anvil head (34) and an anvil tail (35) fixedly connected to both ends of an anvil body (31), the cover assembly (2) comprising a cover head (21) and a cover tail (22) fixedly connected to both ends of a cover body (23), wherein a mounting groove (37) is provided in the middle part of one side of the anvil body (31), and the cover body (23) is disposed in the mounting groove (37), characterized in that: The anvil tail (35) is provided with a snap-fit ​​assembly (36) for snapping the anvil tail (35) and the cover tail (22). The snap-fit ​​assembly (36) includes snap-fit ​​blocks (361) movably disposed on both sides of the anvil tail (35). The snap-fit ​​blocks (361) are located in the corresponding sliding groove (362) and achieve lateral sliding. The cover tail (22) is snapped and fixed with the snap-fit ​​blocks (361). The inner sides of the two snap-fit ​​blocks (361) are fixed with connecting plates (365) through connecting rods (364). The connecting plates (365) are movably disposed in the anvil tail (35). A pull rod (367) is fixedly connected to one side of the connecting plate (365).

2. The anvil of a stapler according to claim 1, characterized in that: The card block (361) is a right-angled triangular card block (361), and the bottom of the card block (361) is a slope.

3. The anvil of a stapler according to claim 2, characterized in that: Both sides of the anvil tail (35) are provided with a sliding groove (362) that matches the shape of the locking block (361). The locking block (361) is located in the sliding groove (362) and can slide laterally. A spring (363) with the other end fixed to the inner side of the locking block (361) is fixed to the inner side of the sliding groove (362).

4. The anvil of a stapler according to claim 3, characterized in that: The anvil tail (35) is provided with a pair of sliding grooves (366) that are adapted to the shape of the connecting plate (365). The connecting plate (365) is located in the sliding grooves (366) and can slide laterally. The anvil tail (35) is provided with a through hole (369) that is adapted to the shape of the connecting rod (364). The end of the connecting rod (364) away from the locking block (361) passes through the through hole (369) and is fixed to the outside of the connecting plate (365).

5. The anvil of a stapler according to claim 4, characterized in that: The through hole (369) is connected to both the first slide (362) and the second slide (366).

6. The anvil of a stapler according to claim 5, characterized in that: The anvil body (31) is fixed with a plurality of nail grooves (33) on the side away from the mounting groove (37). The nail grooves (33) include teardrop-shaped grooves (331) arranged symmetrically on the left and right sides. The ends of two teardrop-shaped grooves (331) are connected by an arc-shaped channel (332).

7. The anvil of a stapler according to claim 6, characterized in that: The cover head (21) is welded to the anvil head (34).

8. The anvil of a stapler according to claim 7, characterized in that: The main body of the cover (23) is an arc-shaped structure and protrudes in a direction away from the main body of the anvil (31).

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