Asymmetric anastomosis nail for endoscope and nail bin assembly

Abstract

The asymmetric anastomosis nail comprises a nail body and nail feet, the heights of the two nail feet are different, and after the two nail feet are bent and formed, a notch is formed between the shorter nail foot and the nail body after the shorter nail foot is bent; the nail bin assembly comprises a nail bin seat and a nail abutting seat, a nail storage groove is formed in the nail bin seat, a sewing nail is arranged in the nail storage groove, a forming groove used for enabling the two ends of the sewing nail to be bent inwards is formed in the face, close to the nail bin seat, of the nail abutting seat, a receding groove allowing the cutting knife to penetrate through is further formed in the nail bin seat, and the receding groove is located in the middle of the nail bin seat in the width direction. Six rows of staple storage grooves are formed, the two sides of the receding groove correspond to three rows of staple storage grooves respectively, the staples in the two rows of staple storage grooves, close to the receding groove, of each side of the receding groove are asymmetric anastomotic staples, and the staples in the row of staple storage grooves, farthest from the receding groove, of each side of the receding groove are symmetric anastomotic staples. The anastomat has the effects that the percussion resistance of the anastomat is reduced, and the necrosis of suture tissue is reduced.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, and in particular to an asymmetric anastomosis staple and staple cartridge assembly for laparoscopy. Background Technology

[0002] A stapler is a medical device similar to a stapler. The front end of the stapler is equipped with a staple cartridge assembly, which includes a staple cartridge seat and an abutment seat. The abutment seat and the staple cartridge seat are rotatably connected. The rear end of the stapler is equipped with a rotating assembly that drives the abutment seat to rotate toward the staple cartridge seat.

[0003] The staple cartridge is equipped with staple storage slots and a clearance slot for the cutting blade to pass through. The cutting blade moves forward from the rear end of the stapler to cut the tissue. The clearance slot is located in the middle of the staple cartridge in the width direction. There are six rows of staple storage slots, with three rows of staple storage slots on each side of the clearance slot. The staples are located in the staple storage slots. A pusher is provided in the staple storage slot, and the pusher is located below the staple. The top surface of the pusher is provided with a slot for the staple to be locked. The rear end of the stapler is provided with a push plate that moves along the length direction of the stapler. The side of the pusher near the pusher is inclined. The pusher can enter the staple cartridge and contact the inclined surface of the pusher, pushing the pusher towards the outside of the staple storage slot. Thus, the pusher can push the staple out of the staple storage slot. At this time, the pusher is still located in the staple storage slot (the staple storage slot provides limiting guidance for the pusher, so that the movement direction of the staple remains stable). The side of the anchor near the staple cartridge is provided with a forming groove for bending the two ends of the staple inward.

[0004] During tissue anastomosis, the tissue is positioned between the staple cartridge seat and the staple seat. After the staple seat and staple cartridge seat are combined, the push plate is driven to push the pusher piece out of the staple storage groove, so that the two ends of the staple pass through the tissue and bend into a "B" shape under the constraint of the forming groove, forming a closed hemostasis.

[0005] In the prior art, the staples are symmetrical anastomotic staples (see attached document). Figure 1 , 2 The symmetrical staples consist of a staple body and staple feet at both ends of the staple body. The two staple feet are at the same height. All staples in the six rows of staple storage slots are symmetrical staples. During the forming process, the staple feet at both ends of the staple body bend inward at the same time. When the staple feet bend to contact each other, the firing feel becomes heavier due to the large resistance. In addition, since the forming height of the six rows of staples is the same, the six rows of staples suture the tissue too tightly, which may lead to necrosis of the suture. Therefore, it needs to be improved. Utility Model Content

[0006] To address the aforementioned technical problems, this application provides an asymmetric anastomosis staple and staple cartridge assembly for laparoscopy.

[0007] Firstly, the asymmetric anastomotic staples for laparoscopy provided in this application adopt the following technical solution:

[0008] An asymmetric anastomosis staple for laparoscopy includes a staple body and staple feet disposed at both ends of the staple body. The two staple feet are of different heights. After the two staple feet are bent into shape, the shorter staple foot has a notch between it and the staple body.

[0009] Secondly, the pinning device component provided in this application adopts the following technical solution:

[0010] A staple cartridge assembly includes a staple cartridge seat and a staple anchor seat, which are rotatably connected. The staple cartridge seat has a staple storage groove and a staple is disposed therein. The staple anchor seat has a forming groove on the side near the staple cartridge seat for bending the two ends of the staple inward. The staple cartridge seat also has a clearance groove for a cutting blade to pass through, which is located in the middle of the width direction of the staple cartridge seat. There are six rows of staple storage grooves, with three rows of staple storage grooves on each side of the clearance groove. The staples in the two rows of staple storage grooves closest to the clearance groove on each side are asymmetrical matching staples, and the staples in the row of staple storage grooves furthest from the clearance groove on each side are symmetrical matching staples.

[0011] Preferably, in the three rows of nail storage slots on each side of the clearance slot, the adjacent rows of nail storage slots are staggered.

[0012] Preferably, in the two rows of asymmetrical staples on each side of the relief groove, the shorter ends of the staples in the same row are all in the same direction, while the shorter ends of the staples in different rows are in opposite directions.

[0013] In summary, this application includes at least one of the following beneficial technical effects:

[0014] 1. Because the two legs of the asymmetric staple are at different heights and are formed sequentially, the forming resistance is reduced, the force required to fire the stapler is reduced, and the comfort of using the stapler is improved.

[0015] 2. Because the four rows of staples near the relief groove are asymmetrical staples, when the staple legs are bent, they simultaneously form a closed opening (formed by the longer staple legs of the asymmetrical staples) and a notch (formed by the shorter staple legs of the asymmetrical staples). At this time, the suture has a slight blood supply, and the tissue is not prone to necrosis. Since the row of staples furthest from the relief groove is symmetrical staple, when the staple legs are bent, they form a complete "B"-shaped staple, which can also achieve the effect of complete hemostasis. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a symmetrical staple before the staple feet are bent and shaped.

[0017] Figure 2 This is a schematic diagram of a symmetrical stapler after the staple feet have been bent and shaped.

[0018] Figure 3 This is a schematic diagram of an asymmetric staple before the staple feet are bent and shaped.

[0019] Figure 4 This is a schematic diagram of the structure of an asymmetric staple after the staple feet are bent and shaped.

[0020] Figure 5 This is a structural diagram of the staple cartridge assembly, used to illustrate the structure of the staple cartridge holder and the staples.

[0021] Figure 6 This is a structural diagram of the staple cartridge assembly, used to illustrate the structure of the anvil and the molding groove.

[0022] Figure 7 yes Figure 5 Enlarged view of point A in the middle.

[0023] Figure 8 yes Figure 6 Enlarged view of point B in the middle.

[0024] Explanation of reference numerals in the attached drawings: 1. Symmetrical staple; 2. Asymmetrical staple; 3. Staple body; 4. Staple foot; 5. Notch; 6. Staple cartridge assembly; 61. Staple cartridge seat; 611. Staple storage groove; 612. Relief groove; 613. Push plate; 62. Staple abutment seat; 621. Forming groove. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.

[0026] This application discloses an asymmetric anastomotic staple and staple cartridge assembly for laparoscopy.

[0027] In the first aspect, embodiments of this application disclose an asymmetric anastomotic staple 2 for laparoscopy, referring to... Figure 3 , 4 The asymmetrical matching nail 2 includes a nail body 3 and nail feet 4 set at both ends of the nail body 3. The heights of the two nail feet 4 are not the same. After the two nail feet 4 are bent into shape, the shorter nail foot 4 has a gap 5 between it and the nail body 3.

[0028] Because the two feet 4 of the asymmetric staple 2 are at different heights, the two feet 4 are formed one after the other, thus reducing the forming resistance, reducing the force required when the stapler is fired, and improving the comfort of using the stapler.

[0029] Secondly, this application discloses a pinning device component, referring to... Figure 5-8The staple cartridge assembly 6 includes a staple cartridge seat 61 and a staple abutment seat 62, which are rotatably connected to the staple cartridge seat 61. The staple cartridge seat 61 is provided with a staple storage groove 611, which is provided with a staple. The side of the staple abutment seat 62 near the staple cartridge seat 61 is provided with a forming groove 621 for bending the two ends of the staple inward. The forming groove 621 corresponds to the staple one by one and is "B" shaped. The staple cartridge seat 61 is also provided with a clearance groove 612 for the cutting blade to pass through. The clearance groove 612 is located in the middle of the width direction of the staple cartridge seat 61. There are six rows of staple storage grooves 611. There are three rows of staple storage grooves 611 on each side of the clearance groove 612. The staples in the two rows of staple storage grooves 611 closest to the clearance groove 612 on each side are asymmetrical matching staples 2. The staples in the row of staple storage grooves 611 furthest from the clearance groove 612 on each side are symmetrical matching staples 1.

[0030] A pusher 613 is provided inside the staple storage slot 611. The pusher 613 is located below the staples. The top surface of the pusher 613 is provided with a slot for the staples to be locked, so that the staples can be more stably located in the staple storage slot 611. A push plate that moves along the length of the stapler is provided at the rear end of the stapler. The staple cartridge seat 61 is provided with a groove that communicates with the staple storage slot 611 and allows the push plate to slide. The side of the pusher 613 near the push plate is inclined. The push plate can enter the staple cartridge seat 61 and contact the inclined surface of the pusher 613, pushing the pusher 613 outward from the staple storage slot 611. Thus, the pusher 613 can push the staples out of the staple storage slot 611. At this time, the pusher 613 is still located in the staple storage slot 611. The staple storage slot 611 provides limiting guidance for the pusher 613, so that the movement direction of the staples remains stable.

[0031] In the three rows of nail storage slots 611 on each side of the clearance slot 612, the adjacent rows of nail storage slots 611 are staggered.

[0032] In the two rows of asymmetrical staples 2 on each side of the relief groove 612, the shorter end of the staples 2 in the same row is in the same direction, while the shorter end of the staples 2 in different rows is in opposite directions, so that the position of the notch 5 can be evenly distributed, thereby enabling the suture to be evenly supplied with blood.

[0033] Since the four rows of staples near the relief groove 612 are asymmetrical staples 2, when the staple legs 4 are bent, they will simultaneously form a closed opening (formed by the longer staple legs 4 of the asymmetrical staples 2) and a notch 5 (formed by the shorter staple legs 4 of the asymmetrical staples 2). At this time, the suture opening has a slight blood supply and the tissue is not prone to necrosis. Since the row of staples furthest from the relief groove 612 is symmetrical staples 1, when the staple legs 4 are bent, they form a complete "B" type staple, which can also achieve the effect of complete hemostasis.

[0034] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An asymmetric stapling nail for endoscopy, characterized by: It includes a nail body and nail feet located at both ends of the nail body. The two nail feet are of different heights. After the two nail feet are bent into shape, the shorter nail foot has a gap between it and the nail body.

2. A staple cartridge assembly, using the asymmetric matching staples of claim 1, comprising a staple cartridge seat and a staple anchor seat, the staple anchor seat and the staple cartridge seat being rotatably connected, the staple cartridge seat having a staple storage groove, the staple storage groove having a staple being disposed therein, the staple anchor seat having a forming groove on the side near the staple cartridge seat for bending the two ends of the staple inward, the staple cartridge seat also having a clearance groove for a cutting blade to pass through, the clearance groove being located in the middle of the width direction of the staple cartridge seat, the staple storage groove having six rows, with three rows of staple storage grooves corresponding to each side of the clearance groove, characterized in that: The staples in the two rows of staple storage slots closest to the relief groove on each side are asymmetrical staples, while the staples in the row of staple storage slots furthest from the relief groove on each side are symmetrical staples.

3. The staple cartridge assembly according to claim 2, characterized in that: In the three rows of nail storage slots on each side of the clearance slot, the adjacent rows of nail storage slots are staggered.

4. The staple cartridge assembly according to claim 2, characterized in that: In the two rows of asymmetrical staples on each side of the relief groove, the shorter ends of the staples in the same row are all in the same direction, while the shorter ends of the staples in different rows are in opposite directions.

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