Anastomosis assembly and anastomat

Abstract

The invention provides an anastomosis assembly and an anastomat. The anastomosis assembly comprises a nail abutting seat, a nail bin seat and a cutting knife. The nail bin seat is connected with the nail abutting seat in a matched mode, a nail bin is arranged in the nail bin seat, and the cutting knife is connected between the nail abutting seat and the nail bin seat and can slide in the first direction relative to the nail abutting seat and the nail bin seat. The cutting knife comprises a knife head and a knife bar connected with the knife head, and the knife head comprises a knife head body and a knife edge arranged on the knife head body. The tool bit body is provided with an upper beam and a lower beam which are perpendicular to the blade, the blade is located between the upper beam and the lower beam, and the blade faces the tool bar and is obliquely arranged. A nail pushing sliding block is arranged in the nail bin and abuts against the tool bit, the upper beam can cover the highest position of the nail pushing sliding block during abutting, and the nail pushing sliding block can slide in the nail bin in the first direction. Compared with the prior art, the anastomosis assembly has the advantages that the tissue can be cut after being completely clamped, larger clamping force is achieved, the tissue slippage phenomenon can be reduced in the anastomosis process, and the anastomosis efficiency is improved.

Description

Technical Field

[0001] The invention relates to an anastomosis assembly and an anastomosis device, belonging to the technical field of medical devices. Background Art

[0002] A medical stapler is a medical device that is often used in surgical operations on the physiological tissues of the digestive tract. In general surgical operations, staplers are often used to complete the cutting and suturing of tissues. Recently, a long-nail stapler specifically for sleeve gastrectomy and vertical sleeve gastrectomy has appeared on the market.

[0003] When performing gastrectomy surgery, traditional staplers use a cutting blade facing forward and a narrow I-beam to squeeze the gastric tissue. However, the new long-stapler stapler has a long cutting distance, so using the traditional cutting blade and narrow I-beam method will cause the I-beam to break. Secondly, due to the long cutting distance, gastric tissue slippage is likely to occur during the anastomosis process, causing the titanium staples to deform, leading to anastomosis failure and the risk of blood leakage.

[0004] In view of this, it is indeed necessary to propose improvements to the existing staplers to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide an anastomosis assembly which can ensure that the tissue is completely clamped before cutting, has a greater clamping force, and can reduce tissue slippage during the anastomosis process, thereby improving the anastomosis efficiency.

[0006] To achieve the above object, the present invention provides an anastomosis assembly, comprising:

[0007] Abutment;

[0008] A nail magazine seat, connected with the nail anvil, and a nail magazine is arranged inside the nail magazine seat;

[0009] A cutting knife connected between the anvil and the nail magazine seat and capable of sliding relative to the anvil and the nail magazine seat in a first direction, the cutting knife comprising a cutting head and a cutting rod connected to the cutting head, the cutting head comprising a cutting head body and a cutting blade arranged on the cutting head body;

[0010] Among them, the cutter head body is provided with an upper beam and a lower beam perpendicular to the blade, the blade is located between the upper beam and the lower beam, and the blade faces the cutter rod and is inclined, and a nail pushing slider is provided in the nail magazine, and the nail pushing slider abuts against the cutter head. When abutting, the upper beam can cover the highest point of the nail pushing slider, and the nail pushing slider can slide along the first direction inside the nail magazine.

[0011] As a further improvement of the present invention, the upper beam and the lower beam are roughly rectangular, and in the first direction, the length of the upper beam is 7-13 mm, the length of the lower beam is smaller than that of the upper beam, and the widths of the upper beam and the lower beam are both 6-10 mm.

[0012] As a further improvement of the present invention, the blade is arranged close to the upper beam, and the inclination angle of the blade relative to the blade rod is 30°-45°.

[0013] As a further improvement of the present invention, a first sliding groove extending along a first direction is provided in the nail support seat, the upper beam is accommodated in the first sliding groove and can slide along the first sliding groove, and a second sliding groove extending along the first direction is provided in the nail magazine seat, the lower beam is accommodated in the second sliding groove and can slide along the second sliding groove.

[0014] As a further improvement of the present invention, the nail magazine seat includes a seat body, the nail magazine is located in the seat body, a tool groove extending along a first direction is provided at the middle position of the nail magazine, the cutting knife portion is accommodated in the tool groove and can slide along the tool groove.

[0015] As a further improvement of the present invention, the nail pushing slider is clamped on the side of the cutter head away from the blade and can slide along the first direction with the cutter head. A plurality of nail pushers connected with staples are provided in the staple magazine. The nail pushing slider cooperates with the staple pushers to push the staples toward the staple support for anastomosis.

[0016] As a further improvement of the present invention, the first end of the nail anvil is rotatably connected to the first end of the nail magazine seat via a rotating shaft, and the second end of the nail anvil and the second end of the nail magazine seat are configured to be able to approach or move away from each other to control the closing or opening of the nail anvil and the nail magazine seat.

[0017] As a further improvement of the present invention, the anastomosis assembly further includes a lifting arm, and two ends of the lifting arm are respectively connected to the second end of the staple support and the second end of the staple magazine support.

[0018] As a further improvement of the present invention, the second end of the nail support seat is provided with a first guide groove, the second end of the nail magazine seat is provided with a second guide groove, and the two ends of the lifting arm are respectively provided with guide shafts, and the guide shafts are correspondingly slidably arranged in the first guide groove and the second guide groove.

[0019] Another object of the present invention is to provide a stapler having the above-mentioned stapler assembly.

[0020] To achieve the above object, the present invention provides a stapler including the above-mentioned stapler assembly.

[0021] The beneficial effects of the present invention are as follows: the anastomosis assembly of the present invention is provided with an upper beam and a lower beam perpendicular to the blade on the blade body, and the blade is arranged to face the blade rod and be inclined, so that the upper beam and the lower beam can be used to fully clamp the tissue first and then use the blade to cut, thereby having a greater clamping force. In addition, when the nail pusher slider is set to abut against the blade, the upper beam can cover the highest point of the nail pusher slider, and the nail pusher slider can slide along the first direction inside the nail magazine, thereby reducing tissue slippage during the anastomosis process and improving the anastomosis efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the anastomosis assembly of the present invention.

[0023] Figure 2 yes Figure 1 Exploded diagram.

[0024] Figure 3 yes Figure 1 Cross-sectional view of .

[0025] Figure 4 yes Figure 3 Enlarged view of the circle A in the middle.

[0026] Figure 5 yes Figure 2 Schematic diagram of the three-dimensional structure of the middle cutter head.

[0027] Figure 6 yes Figure 2 Schematic diagram of the three-dimensional structure of the middle nail seat.

[0028] Figure 7 yes Figure 2 Schematic diagram of the three-dimensional structure of the middle nail magazine seat.

[0029] Figure 8 yes Figure 3 Assembly drawing of the cutting knife and push pin slider.

[0030] Fig. 9 yes Figure 2 Schematic diagram of the three-dimensional structure of the middle push pin slider. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] See also Figure 1As shown, the present invention discloses a stapler, which includes an anastomosis assembly 100. The anastomosis assembly 100 includes a nail anvil 1, a staple magazine seat 2 and a cutting knife 3. The staple magazine seat 2 is cooperatively connected with the nail anvil 1. The cutting knife 3 is connected between the nail anvil 1 and the staple magazine seat 2, and can slide along a first direction relative to the nail anvil 1 and the staple magazine seat 2. The longitudinal direction of the nail anvil 1 and the staple magazine seat 2 is defined as the first direction. The anastomosis assembly 100 can ensure that the tissue is cut after it has been completely clamped, has a greater clamping force, and can reduce tissue slippage during the anastomosis process, thereby improving the anastomosis efficiency.

[0033] like Figure 2-Figure 9 As shown, the first end of the anvil 1 is rotatably connected to the first end of the staple cartridge seat 2 via a rotating shaft 4, and the second end of the anvil 1 and the second end of the staple cartridge seat 2 are configured to be able to approach or move away from each other, so as to control the closing or opening of the anvil 1 and the staple cartridge seat 2. The first end of the anvil 1 and the first end of the staple cartridge seat 2 are both U-shaped structures, and the first end of the anvil 1 extends into the first end of the staple cartridge seat 2. The anvil 1 can rotate relative to the staple cartridge seat 2 via the rotating shaft 4, so that the anvil 1 and the staple cartridge seat 2 are closed or opened, which facilitates the entry of tissue between the anvil 1 and the staple cartridge seat 2, and cutting and anastomosis after clamping the tissue.

[0034] The cutting knife 3 includes a cutter head 31 and a cutter bar 32 connected to the cutter head 31, the cutter head 31 is located between the anvil seat 1 and the nail magazine seat 2, and the cutter bar 32 extends along a first direction and is exposed to the anvil seat 1 and the nail magazine seat 2. Specifically, the cutter head 31 includes a cutter head body 311 and a blade 312 disposed on the cutter head body 311, and the cutter head body 311 and the blade 312 are integrally formed.

[0035] The blade body 311 is provided with an upper beam 3111 and a lower beam 3112 which are perpendicular to the blade 312. The upper beam 3111 is located in the nail support seat 1, and the lower beam 3112 is located in the nail magazine seat 2. Figure 5 The upper beam 3111 and the lower beam 3112 are roughly rectangular, and in the first direction, the length of the upper beam 3111 is 7-13 mm, and the length of the lower beam 3112 is less than the length of the upper beam 3111. The width of the upper beam 3111 and the lower beam 3112 are both 6-10 mm, preferably 7 mm.

[0036] In this embodiment, the upper beam 3111 and the lower beam 3112 are longer and wider, and can provide a greater clamping force after the anvil 1 and the nail magazine seat 2 are closed, so that the anvil 1 and the nail magazine seat 2 remain in a closed state. The height between the upper beam 3111 and the lower beam 3112 is approximately 10-15 mm, preferably 12 mm.

[0037] The blade 312 is located between the upper beam 3111 and the lower beam 3112, and the blade 312 faces the blade rod 32 and is inclined. The blade 312 is arranged close to the upper beam 3111, and the blade rod 32 is arranged close to the lower beam 3112. It can be understood that in the initial state, the blade head 31 is located at the first end of the nail support seat 1 and the nail magazine seat 2, and the blade rod 32 extends from the blade head 31 toward the second end of the nail support seat 1 and the nail magazine seat 2. The tissue is located on the side of the blade head 31 close to the blade rod 32. When the stapler is cutting, the blade 312 on the blade head 31 is driven to cut the tissue by pulling the blade rod 32.

[0038] Preferably, the blade 312 is inclined at an angle of 30°-45° relative to the blade rod 32. The blade 312 is inclined toward the blade rod 32, and the blade 312 is an inclined surface, which can limit the tissue under the blade 312 for cutting when cutting tissue, thereby improving cutting efficiency.

[0039] like Figure 6 and Figure 7 As shown, in this embodiment, the nail support 1 is provided with a first slide groove 11 extending along a first direction, and the upper beam 3111 is received in the first slide groove 11 and can slide along the first slide groove 11. The nail magazine seat 2 is provided with a second slide groove 21 extending along the first direction, and the lower beam 3112 is received in the second slide groove 21 and can slide along the second slide groove 21.

[0040] Preferably, the first slide groove 11 is located in the middle of the nail support 1, and the second slide groove 21 is located in the middle of the nail magazine seat 2. The first slide groove 11 and the second slide groove 21 not only guide the cutting knife 3, but also limit the cutting knife 3 when it is cutting, so as to prevent the knife head 31 from shaking, and the cutting stability is better.

[0041] In this embodiment, the lower beam 3112 is always received in the second slide groove 21 , and the first end of the nail support 1 is provided with a receiving groove 12 connected to the first slide groove 11 .

[0042] In the initial state, the upper beam 3111 is received in the receiving groove 12. At this time, the anvil 1 can rotate relative to the staple magazine seat 2, so that the anvil 1 and the staple magazine seat 2 are opened to facilitate the entry of tissue. Then the anvil 1 and the staple magazine seat 2 are controlled to close. At this time, the knife rod 32 is pulled, and the upper beam 3111 enters the first slide groove 11, further limiting the relative position of the anvil 1 and the staple magazine seat 2, so that the anvil 1 and the staple magazine seat 2 remain in a closed state. At the same time, due to the widening and lengthening of the upper beam 3111 and the lower beam 3112, it can be ensured that the tissue is cut after being fully clamped, providing a greater clamping force for the anastomosis assembly 100, and reducing tissue slippage during the anastomosis process, thereby improving the anastomosis efficiency.

[0043] like Figure 7 and Figure 8 As shown, the nail magazine seat 2 includes a seat body 22 and a nail magazine 23 located in the seat body 22. The seat body 22 is a U-shaped structure. The second slide groove 21 is located at the bottom of the seat body 22, and the nail magazine 23 is located outside the second slide groove 21. A knife groove 231 extending along a first direction is provided at the middle position of the nail magazine 23. The cutting knife 3 is partially accommodated in the knife groove 231 and can slide along the knife groove 231. The knife groove 231 is aligned with the second slide groove 21, and the knife rod 32 slides in the knife groove 231. The first end of the nail magazine 23 is connected to the rotating shaft 4 to limit the nail magazine 23 in the first direction.

[0044] A nail pushing slider 24 abutting against the cutter head 31 is provided in the nail magazine seat 2. The nail pushing slider 24 is located in the seat body 22 and between the nail magazine 23 and the second slide groove 21, that is, the nail pushing slider 24 is located in the nail magazine 23. In this embodiment, the nail pushing slider 24 can follow the cutter head 31 and slide along the first direction inside the nail magazine 23. Specifically, the nail pushing slider 24 is located in front of the blade 312 facing the knife rod 32. The nail pushing slider 24 is clamped on the side of the cutter head 31 away from the blade 312, that is, the nail pushing slider 24 is arranged close to the lower beam 3112, and the knife rod 32 contacts the nail pushing slider 24. Preferably, the nail pushing slider 24 is located on the outer wall surface of the second slide groove 21 and slides on the outer wall surface of the second slide groove 21. A plurality of staple pushers 233 connected to staples 232 are disposed in the staple magazine 23 , and the staple pusher slider 24 slides along a first direction to cooperate with the staple pushers 233 to push the staples 232 toward the staple anvil 1 for staple anastomosis.

[0045] like Figure 4 and Fig. 9As shown, when the pin-pushing slider 24 abuts against the cutter head 31, the upper beam 3111 can cover the highest point of the pin-pushing slider 24. That is, the upper beam 3111 extends along the first direction to the outside of the highest point of the pin-pushing slider 24. Specifically, the pin-pushing slider 24 includes a clamping portion 241 and two pin-pushing portions 242 arranged on the clamping portion 241. The clamping portion 241 is clamped on the cutter head body 311 and slides on the outer wall surface of the second slide groove 21. In this embodiment, a protruding sliding rib 2413 is provided on the side of the clamping portion 241 facing the second slide groove 21. The sliding rib 2413 extends along the first direction and contacts the outer wall surface of the second slide groove 21. The sliding rib 2413 can reduce the contact area between the pin-pushing slider 24 and the outer wall surface of the second slide groove 21, so that the pin-pushing slider 24 slides more smoothly and more labor-saving.

[0046] The clamping portion 241 is provided with a clamping groove 2411 facing the cutter head body 311 and a clamping protrusion 2412 located on the side of the clamping groove away from the cutter head body 311. The cutter head body 311 is partially accommodated in the clamping groove 2411 and abuts against the clamping protrusion to achieve the abutting connection between the pin-pushing slider 24 and the cutter head 31. The two pin-pushing portions 242 are symmetrically arranged on both sides of the cutter head body 311, and the knife rod 32 is partially supported on the clamping portion 241. Preferably, a receiving groove (not numbered) for accommodating the clamping portion 241 and the clamping protrusion 2412 is provided at the knife rod 32, so that the knife rod 32 can be closer to the second slide groove 21, thereby improving the operating stability of the cutting knife 3.

[0047] The highest point of the nail pushing slider 24 is set at the nail pushing part 242, and the nail pushing part 242 is provided with a molding surface 2421 and a nail pushing inclined surface 2422 connected to the molding surface 2421. The nail pusher 233 is gradually pushed toward the nail support 1 through the nail pushing inclined surface 2422. When the molding surface 2421 contacts the nail pusher 233, the staples 232 are pushed out and formed for mating. The molding surface 2421 is the highest point of the nail pushing slider 24. The nail pushing inclined surface 2422 presents two different slope angles during the extension process, and the two slope angles gradually decrease toward the molding surface 2421. It is ensured that the nail pushing inclined surface 2422 smoothly pushes the nail pusher 233 to the molding surface 2421. The upper beam 3111 extends along the first direction to the outside of the forming surface 2421, which can provide a greater clamping force for the tissue to be anastomosed, thereby reducing tissue slippage during the anastomosis process, avoiding the anastomosis failure caused by the closing deformation of the anastomosis staples 232, and improving the anastomosis efficiency.

[0048] The stapler performs cutting and anastomosis specifically after the tissue enters between the staple holder 1 and the staple magazine holder 2, by pulling the knife rod 32, thereby driving the knife head 31 to slide and then driving the staple pusher slider 24 to slide, and the staple pusher slider 24 gradually pushes the staple pusher 233 toward the staple holder 1, and then the staples 232 pass through the tissue and are formed and anastomosed under the action of the staple holder 1, and then the knife head 31 cuts the anastomosed tissue.

[0049] In this embodiment, the first ends of the anvil 1 and the staple cartridge 2 are further provided with an end cap 5, which is received in the anvil 1 and connected to the rotating shaft 4. The end cap 5 makes the appearance transition of the anastomosis assembly 100 smoother.

[0050] Combination Figure 1 and Figure 2 As shown, the anastomosis assembly 100 also includes a lifting arm 6, and the lifting arm 6 is used to control the closing or opening of the anvil 1 and the nail magazine seat 2. The two ends of the lifting arm 6 are respectively connected to the second end of the anvil 1 and the second end of the nail magazine seat 2. The second end of the anvil 1 is provided with a first guide groove 13, and the second end of the nail magazine seat 2 is provided with a second guide groove 25. The two ends of the lifting arm 6 are respectively provided with guide shafts (not shown), and the guide shafts are correspondingly slidably arranged in the first guide groove 13 and the second guide groove 25. The lifting arm 6 slides along the first guide groove 13 and the second guide groove 25 through the guide shaft, and the lifting arm 6 will support the second end of the anvil 1, so that the first end of the anvil 1 rotates relative to the first end of the nail magazine seat 2.

[0051] In this embodiment, the second end portion of the nail support 1 extends into the second end of the nail magazine seat 2, and the nail magazine seat 2 is also provided with a groove 26 corresponding to the first guide groove 13. The guide shaft slidably arranged in the first guide groove 13 is supported in the groove 26, thereby supporting the nail support 1 when the nail support 1 and the nail magazine seat 2 are closed.

[0052] In summary, the anastomosis assembly 100 of the present invention provides the cutter head body 311 with an upper beam 3111 and a lower beam 3112 perpendicular to the blade 312, and the blade 312 is provided between the upper beam 3111 and the lower beam 3112, and the blade 312 faces the cutter bar 32 and is inclined, so that the upper beam and the lower beam can be used to ensure that the tissue is fully clamped before the blade is used for cutting, thereby having a greater clamping force. In addition, when the nail pusher slider 24 is set to abut against the cutter head 31, the upper beam 3111 can cover the highest point of the nail pusher slider 24, and the nail pusher slider 24 can slide along the first direction inside the nail magazine 23, thereby reducing tissue slippage during the anastomosis process and improving the anastomosis efficiency.

[0053] The above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention.

Claims

1. An anastomosis assembly, characterized in that: include: Abutment; A nail magazine seat, connected with the nail anvil, and a nail magazine is arranged inside the nail magazine seat; A cutting knife connected between the anvil and the nail magazine seat and capable of sliding relative to the anvil and the nail magazine seat in a first direction, the cutting knife comprising a cutting head and a cutting rod connected to the cutting head, the cutting head comprising a cutting head body and a cutting blade arranged on the cutting head body; Among them, the cutter head body is provided with an upper beam and a lower beam perpendicular to the blade, the blade is located between the upper beam and the lower beam, and the blade faces the cutter rod and is inclined, and a nail pushing slider is provided in the nail magazine, and the nail pushing slider abuts against the cutter head. When abutting, the upper beam can cover the highest point of the nail pushing slider, and the nail pushing slider can slide along the first direction inside the nail magazine.

2. The anastomotic assembly according to claim 1, characterized in that: The upper beam and the lower beam are substantially rectangular in shape, and in the first direction, the length of the upper beam is 7-13 mm, the length of the lower beam is smaller than that of the upper beam, and the widths of the upper beam and the lower beam are both 6-10 mm.

3. The anastomotic assembly according to claim 1, characterized in that: The blade is arranged close to the upper beam, and the inclination angle of the blade relative to the blade rod is 30°-45°.

4. The anastomotic assembly according to claim 1, characterized in that: A first slide groove extending along a first direction is provided in the nail support seat, the upper beam is accommodated in the first slide groove and can slide along the first slide groove, and a second slide groove extending along the first direction is provided in the nail magazine seat, the lower beam is accommodated in the second slide groove and can slide along the second slide groove.

5. The anastomotic assembly according to claim 1, characterized in that: The nail magazine seat includes a seat body, the nail magazine is located in the seat body, a cutting groove extending along a first direction is provided at the middle position of the nail magazine, the cutting knife is partially accommodated in the cutting groove and can slide along the cutting groove.

6. The anastomotic assembly according to claim 5, characterized in that: The nail pushing slider is clamped on the side of the cutter head away from the blade and can slide along the first direction with the cutter head. A plurality of nail pushers connected with staples are provided in the staple magazine. The nail pushing slider cooperates with the staple pushers to push the staples toward the staple support for anastomosis.

7. The anastomotic assembly according to claim 1, characterized in that: The first end of the nail anvil is rotatably connected to the first end of the nail magazine seat via a rotating shaft, and the second end of the nail anvil and the second end of the nail magazine seat are configured to be able to approach or move away from each other to control the closing or opening of the nail anvil and the nail magazine seat.

8. The anastomotic assembly according to claim 7, characterized in that: The anastomosis assembly also includes a lifting arm, and two ends of the lifting arm are respectively connected to the second end of the nail support seat and the second end of the nail magazine seat.

9. The anastomotic assembly according to claim 8, characterized in that: The second end of the nail support seat is provided with a first guide groove, the second end of the nail magazine seat is provided with a second guide groove, and the two ends of the lifting arm are respectively provided with guide shafts, and the guide shafts are correspondingly slidably arranged in the first guide groove and the second guide groove.

10. A stapler, characterized in that: Comprising the anastomosis assembly as described in any one of claims 1-9.

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