Vascular anastomosis assembly and anastomat

Abstract

The utility model discloses a blood vessel anastomosis assembly which comprises a nail abutting base, a first cutting groove is formed in the nail abutting base, the first cutting groove divides the nail abutting base into a first nail abutting base part and a second nail abutting base part which are asymmetric, one of the first nail abutting base part and the second nail abutting base part is provided with a row of nail abutting grooves, and the other of the first nail abutting base part and the second nail abutting base part is provided with at least two rows of nail abutting grooves; the nail bin assembly comprises a nail box base and a nail bin, the nail box base is hinged to the nail abutting seat, a second cutting groove is formed in the nail bin, the second cutting groove divides the nail bin into a first nail bin part and a second nail bin part which are asymmetric, one of the first nail bin part and the second nail bin part is provided with a row of nail discharging openings, and the other one of the first nail bin part and the second nail bin part is provided with at least two rows of nail discharging openings; when the nail abutting base and the nail bin assembly are closed, the second cutting groove corresponds to the first cutting groove, and the nail outlets correspond to the nail abutting grooves in a one-to-one mode. The utility model discloses can better enter the narrow space in the thoracic surgery, be easier in position when treating the blood vessel, avoid the damage to the blood vessel, more convenient operation in the narrow space, improve the surgery efficiency and safety.

Description

Technical Field

[0001] This utility model relates to the field of anastomosis technology, and in particular to a vascular anastomosis component and anastomosis device. Background Technology

[0002] In laparoscopic thoracic surgery, closing and controlling hemostasis of vascular wounds and promoting recovery are particularly challenging. Therefore, vascular suture techniques are currently used for hemostasis, with vascular anastomosing devices being the most commonly used medical devices in this procedure. However, the thoracic cavity contains numerous tissues, making it difficult to maneuver with large instruments. Furthermore, handling blood vessels in a confined space presents various challenges, such as requiring large clearances, the risk of tearing thin and fragile vascular tissue, and the difficulty in smoothly bypassing blood vessels to place them into the jaws of the laparoscopic anastomosing device. This undoubtedly greatly hinders the progress of the surgery and affects its efficiency and safety. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a vascular anastomosis component and anastomosis device.

[0004] To achieve the above objectives, the technical solution provided by an embodiment of this utility model is as follows:

[0005] A vascular anastomosis assembly, comprising:

[0006] An anvil, wherein the anvil has a first cutting groove, the first cutting groove dividing the anvil into an asymmetrical first anvil portion and a second anvil portion, wherein one of the first anvil portion and the second anvil portion is provided with a row of anvil grooves, and the other is provided with at least two rows of anvil grooves;

[0007] A staple cartridge assembly, comprising a staple cartridge base and a staple cartridge connected to the staple cartridge base, the staple cartridge base being hinged to the staple abutment, the staple cartridge having a second cutting groove dividing the staple cartridge into an asymmetrical first staple cartridge portion and a second staple cartridge portion, one of the first staple cartridge portion and the second staple cartridge portion being provided with one row of staple outlets, and the other being provided with at least two rows of staple outlets;

[0008] When the staple cartridge assembly is closed with the staple seat, the second cutting groove corresponds to the first cutting groove, and each staple outlet corresponds to each staple slot.

[0009] As a further improvement of this utility model, the first nail cartridge and the second nail cartridge are provided with a boss at each of the nail outlets, and the multiple bosses form at least three rows. The height of the two rows of bosses located on both sides of the second cutting groove and closer to the second cutting groove is higher than the height of the other rows of bosses.

[0010] As a further improvement of this utility model, the first nail cartridge is provided with a row of nail outlets, the second nail cartridge is provided with three rows of nail outlets, the first nail abutment is provided with a row of nail abutment grooves, the second nail abutment is provided with three rows of nail abutment grooves, and the plurality of protrusions form four rows. The height of the two rows of protrusions located on both sides of the second cutting groove and closer to the second cutting groove is higher than the height of the other two rows of protrusions.

[0011] As a further improvement of this utility model, the first nail cartridge is provided with three rows of nail outlets, the second nail cartridge is provided with one row of nail outlets, the first nail abutment is provided with three rows of nail abutment grooves, the second nail abutment is provided with one row of nail abutment grooves, and the plurality of protrusions form four rows. The height of the two rows of protrusions located on both sides of the second cutting groove and closer to the second cutting groove is higher than the height of the other two rows of protrusions.

[0012] As a further improvement of this utility model, the height of the two rows of bosses located on both sides of the second cutting groove and close to the second cutting groove is 0.35-0.50mm, and the height of the remaining rows of bosses is 0.10-0.25mm.

[0013] As a further improvement of this utility model, the height of the two rows of bosses located on both sides of the second cutting groove and close to the second cutting groove is 0.40mm, and the height of the remaining rows of bosses is 0.15mm.

[0014] As a further improvement of this utility model, the boss includes two boss portions disposed opposite to each other along the extension direction of the second cutting groove.

[0015] As a further improvement of this utility model, the front end of the anvil is provided with an eagle beak, and the side of the eagle beak facing the nail cartridge is provided with a groove. The front end of the nail cartridge has a protrusion that is raised towards the eagle beak. When the nail cartridge assembly is closed with the anvil, the protrusion is engaged in the groove.

[0016] As a further improvement of this utility model, it also includes a connecting component, which includes an upper connecting block and a lower connecting block connected to each other. The lower connecting block is connected to the anvil. The upper connecting block includes two symmetrically arranged upper limit arc surfaces, and the lower connecting block includes two symmetrically arranged lower limit arc surfaces. The projections of the upper limit arc surfaces and the corresponding lower limit arc surfaces coincide. A motion space for the cutting blade to rotate is formed between the two upper limit arc surfaces and the two lower limit arc surfaces. The cutting blade can rotate to the left or right up to 60° following the connecting component.

[0017] An anastomosis device comprising the aforementioned vascular anastomosis assembly.

[0018] The beneficial effects of this utility model are:

[0019] (1) Both the anvil and the staple cartridge are small and compact. After the components are closed, the size of the jaws is reduced and the required gap is small. It can better enter the narrow space during thoracic surgery, and it is easier to position the staple when dealing with blood vessels, avoiding damage to blood vessels. At the same time, it is more convenient to operate in narrow spaces, improving surgical efficiency and safety.

[0020] (2) The front end of the staple cartridge is provided with a protrusion to facilitate its matching with the groove of the eagle beak. A single protrusion can play the role of lifting and hooking blood vessels, thereby helping the operator to place the blood vessels into the component jaws more smoothly and reduce the need to change other instruments. After the protrusion and the groove are closed, they also play a locking role.

[0021] (3) The staple cartridge has protrusions of different heights on the surface of the staple outlet, which can balance the left and right forces in the asymmetrical component, prevent the staple from not forming properly, and improve the fitting effect.

[0022] (4) The limiting arc surfaces of the upper and lower connecting blocks reduce the angle restriction, allowing the cutting blade to rotate at a larger angle when cutting and anastomosing through narrow tissues, which can better meet the surgical needs under different angles. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a perspective view of a preferred embodiment of the present invention;

[0025] Figure 2 for Figure 1 Enlarged diagram of A in the middle;

[0026] Figure 3 This is an exploded view of the anvil and staple cartridge assembly according to a preferred embodiment of the present invention.

[0027] Figure 4 This is a schematic diagram of the closed structure of the anvil and the staple cartridge assembly according to a preferred embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of the staple cartridge of a preferred embodiment of the present invention;

[0029] Figure 6 This is a front view of the staple cartridge of a preferred embodiment of the present invention;

[0030] Figure 7 This is a top view of the staple cartridge of a preferred embodiment of the present invention;

[0031] Figure 8 This is a schematic diagram of the beak structure of a preferred embodiment of the present invention;

[0032] Figure 9 This is a schematic diagram of the preferred embodiment of the staple cartridge assembly, the staple seat, and the cutting blade deflected to the right.

[0033] Figure 10 for Figure 9 Enlarged diagram of B in the middle;

[0034] Figure 11 This is a schematic diagram of the preferred embodiment of the staple cartridge assembly, the staple seat, and the cutting blade deflected to the left.

[0035] Figure 12 for Figure 11 Enlarged diagram of C in the middle;

[0036] In the diagram: 1. Anchor seat, 10. First cutting groove, 11. First anchor seat portion, 12. Second anchor seat portion, 13. Anchor groove, 2. Attachment cartridge assembly, 21. Attachment cartridge base, 22. Attachment cartridge, 221. First attachment cartridge portion, 222. Second attachment cartridge portion, 223. Attachment outlet, 224. Protrusion, 23. Second cutting groove, 24. First boss, 241. First boss portion, 25. Second boss, 251. Second boss portion, 3. Beak, 31. Groove, 4. Connecting assembly, 41. Upper connecting block, 42. Lower connecting block, 421. Lower limit arc surface, 5. Cutting blade, 7. Sleeve, 71. Central shaft, 8. Steering tie rod. Detailed Implementation

[0037] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0038] Please see Figures 1-5This application discloses a vascular anastomosis assembly, including an anvil 1 and a staple cartridge assembly 2. The anvil 1 has a first cutting groove 10 dividing it into an asymmetrical first anvil portion 11 and a second anvil portion 12. One of the first anvil portion 11 and the second anvil portion 12 has a row of anvil grooves 13, and the other has at least two rows of anvil grooves 13. Each row of anvil grooves 13 includes a plurality of anvil grooves 13 spaced apart along the extending direction of the first cutting groove 10. The staple cartridge assembly 2 includes a staple cartridge base 21 and a staple cartridge 22 connected to the staple cartridge base 21. The staple cartridge base 21 is hinged to the anvil 1 and is rotatable relative to the anvil 1, allowing the anvil 1 and the staple cartridge assembly 2 to open to form a jaw for inserting a blood vessel, or to close for cutting and suturing the blood vessel. The staple cartridge 22 has a second cutting groove 23, which divides the staple cartridge 22 into an asymmetrical first staple cartridge portion 221 and a second staple cartridge portion 222. One of the first staple cartridge portion 221 and the second staple cartridge portion 222 is provided with a staple discharge port 223, and the other is provided with at least two staple discharge ports 223. Each staple discharge port 223 includes a plurality of staple outlets 223 spaced apart along the extension direction of the second cutting groove 23. When the staple cartridge assembly 2 is closed with the staple anchor 1, the second cutting groove 23 corresponds to the first cutting groove 10, and each staple outlet 223 corresponds one-to-one with each staple anchor groove 13.

[0039] This embodiment features an asymmetric vascular anastomosis assembly for laparoscopic surgery. One side requires only one row of staples, and the abandoned blood vessel containing these staples needs to be removed. The other side requires at least two rows of staples to achieve unilateral vascular suturing. The size of the anvil 1 and staple cartridge assembly 2 has been reduced. Both are smaller and more compact, allowing for better access to narrow spaces during thoracic surgery, avoiding damage to vascular tissue. Only a small gap is needed for cutting and anastomosis, achieving both safety and ease of vascular manipulation.

[0040] The first nail cartridge 221 and the second nail cartridge 222 each have a protrusion at each nail outlet 223, forming at least three rows of protrusions. The two rows of protrusions located on both sides of the second cutting groove 23 and closer to the second cutting groove 23 are higher than the height of the remaining rows of protrusions. The number of rows of protrusions is the same as the number of rows of nail outlets 223. By setting protrusions of different heights on the same side, the higher protrusions contact the blood vessel tissue first, closing the blood vessel and stabilizing the force point. The closing force of the higher protrusions is greater than that of the lower protrusions, reducing uneven force on the left and right sides, balancing the force on both sides, and preventing nails from not forming properly.

[0041] In this embodiment, the width of the first staple cartridge 221 along the direction perpendicular to the second cutting groove 23 is smaller than the width of the second staple cartridge 222 along the same direction, and the width of the first anchor seat 11 along the direction perpendicular to the first cutting groove 10 is smaller than the width of the second anchor seat 12 along the same direction. Therefore, the first staple cartridge 221 has one staple discharge port 223, the second staple cartridge 222 has three rows of staple discharge ports 223, the first anchor seat 11 has one row of anchor grooves 13, and the second anchor seat 12 has three rows of anchor grooves 13. Multiple bosses form four rows, with the height of the two rows of bosses located on both sides of the second cutting groove 23 and closer to it being higher than the height of the other two rows.

[0042] Preferably, the height of the two rows of bosses located on both sides of the second cutting groove 23 and close to the second cutting groove 23 is 0.35-0.50mm, and the height of the remaining rows of bosses is 0.10-0.25mm. Specifically, the height of the two rows of bosses located on both sides of the second cutting groove 23 and close to the second cutting groove 23 is 0.40mm, and the height of the remaining rows of bosses is 0.15mm.

[0043] Preferably, the boss includes two boss portions disposed opposite each other along the extending direction of the second cutting groove 23.

[0044] Please see Figures 5-7 Each of the two rows of protrusions located on both sides of the second cutting groove 23 and close to the second cutting groove 23 is designated as a first protrusion 24, and each of the remaining two rows of protrusions is designated as a second protrusion 25. The height of the first protrusion 24 is greater than the height of the second protrusion 25. Specifically, the first protrusion 24 includes two first protrusion portions 241 arranged opposite each other along the extending direction of the second cutting groove 23, and the second protrusion 25 includes two second protrusion portions 251 arranged opposite each other along the extending direction of the second cutting groove 23.

[0045] Of course, it is understandable that, depending on the different surgical needs, such as the different wound locations of blood vessels, in other embodiments, the width of the first staple cartridge 221 along the direction perpendicular to the second cutting groove 23 can be greater than the width of the second staple cartridge 222 along the direction perpendicular to the second cutting groove 23, and the width of the first anvil 11 along the direction perpendicular to the first cutting groove 10 can be greater than the width of the second anvil 12 along the direction perpendicular to the first cutting groove 10. In this case, the first staple cartridge 221 is provided with three rows of staple outlets 223, the second staple cartridge 222 is provided with one row of staple outlets 223, the first anvil 11 is provided with three rows of anvil grooves 13, the second anvil 12 is provided with one row of anvil grooves 13, and the first staple cartridge 221 and the second staple cartridge 222 are provided with protrusions at each staple outlet 223, forming four rows of protrusions. The height of the two rows of protrusions located on both sides of the second cutting groove 23 and closer to the second cutting groove 23 is higher than the height of the other two rows of protrusions.

[0046] Please see Figures 3-8 The anvil 1 has a beak 3 at its front end, and a groove 31 is provided on the side of the beak 3 facing the staple cartridge 22. The top of the front end of the staple cartridge 22 has a protrusion 224 that curves upward toward the beak 3. When the staple cartridge assembly 2 and the anvil 1 are closed, the protrusion 224 is engaged in the groove 31. The protrusion 224 alone can tilt and hook to increase the field of view of the endoscope, reduce the need to change other instruments, and help the operator to hook the blood vessel more smoothly so as to accurately place the blood vessel into the jaws formed by the staple cartridge assembly 2 and the anvil 1. After the protrusion 224 and the groove 31 are closed, it also has a locking function, which facilitates better cutting and anastomosis of the blood vessel.

[0047] The system also includes a connecting component 4, which comprises an upper connecting block 41 and a lower connecting block 42 connected to each other. The lower connecting block 42 is connected to the anvil seat 1. The upper connecting block 41 includes two symmetrically arranged upper limit arc surfaces (not shown in the figure), and the lower connecting block 42 includes two symmetrically arranged lower limit arc surfaces 421. The projections of the upper limit arc surfaces and the corresponding lower limit arc surfaces 421 coincide. A movement space for the cutting blade 5 to rotate is formed between the two upper limit arc surfaces and the two lower limit arc surfaces 421. The cutting blade 5 can rotate to the left or right up to 60° following the connecting component 4. Since the upper limit arc surfaces and lower limit arc surfaces 421 are designed to reduce obstruction to the cutting blade 5, they can better meet the needs of surgery at large angles. The left or right direction refers to the direction of deviation from the centerline of the cutting blade 5 when the vascular anastomosis component is initially placed horizontally. The upper connecting block 41 and the lower connecting block 42 can be riveted together.

[0048] The device also includes a sleeve 7 and a steering rod 8 passing through the sleeve 7. The sleeve 7 is connected to a central shaft 71, which can be composed of two shafts spaced apart vertically and aligned on the same straight line. The anvil 1, upper connecting block 41, and lower connecting block 42 all rotate around the central shaft 71. The steering rod 8 is hinged to the upper connecting block 4 and / or the lower connecting block 5. When the steering rod 8 moves, it causes the upper connecting block 4, lower connecting block 5, and anvil 1 to rotate together around the central shaft 71, thereby driving the cutting blade 5 to rotate at different angles, allowing for operation with a wider field of view.

[0049] Figure 9 , Figure 10 An internal top view showing the movement of the steering lever 8 causing the upper connecting block 41 and the lower connecting block 42 to rotate to the right, which in turn drives the cutting blade 5 and the staple cartridge assembly 2 to rotate to the right. Figure 11 , Figure 12 An internal top view showing the movement of the steering lever 8 causing the upper connecting block 41 and the lower connecting block 42 to rotate to the left, thereby rotating the cutting blade 5 and the staple cartridge assembly 2 to the left.

[0050] In use, this utility model has one row of nails on the right and three rows of nails on the left. The vascular anastomosis component is connected to the main body of the endoscopic anastomosis device. The component is in a closed state and is inserted into the human body through the puncture device. The jaws are opened to separate the nail cartridge 22 from the nail seat 1. The blood vessel is hooked and pried by the protrusion 224 and the beak 3 of the nail cartridge 22. After the blood vessel is placed into the jaws, the protrusion 224 of the nail cartridge 22 and the groove 31 of the beak 3 are closed and locked. The blood vessel is cut by the cutting blade 5. The discarded blood vessel where the first row of nails is located is removed from the body, and the blood vessel is sutured by the three rows of nails.

[0051] This application also provides an anastomosis device, including the above-described vascular anastomosis component.

[0052] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0053] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A vascular anastomosis assembly, characterized in that, include: An anvil, wherein the anvil has a first cutting groove, the first cutting groove dividing the anvil into an asymmetrical first anvil portion and a second anvil portion, wherein one of the first anvil portion and the second anvil portion is provided with a row of anvil grooves, and the other is provided with at least two rows of anvil grooves; A staple cartridge assembly, comprising a staple cartridge base and a staple cartridge connected to the staple cartridge base, the staple cartridge base being hinged to the staple abutment, the staple cartridge having a second cutting groove dividing the staple cartridge into an asymmetrical first staple cartridge portion and a second staple cartridge portion, one of the first staple cartridge portion and the second staple cartridge portion being provided with one row of staple outlets, and the other being provided with at least two rows of staple outlets; When the staple cartridge assembly is closed with the staple seat, the second cutting groove corresponds to the first cutting groove, and each staple outlet corresponds to each staple slot.

2. The vascular anastomosis assembly according to claim 1, characterized in that, The first and second nail cartridges are provided with protrusions at each nail outlet, and the protrusions form at least three rows. The height of the two rows of protrusions located on both sides of the second cutting groove and closer to the second cutting groove is higher than the height of the other rows of protrusions.

3. The vascular anastomosis assembly according to claim 2, characterized in that, The first nail cartridge has a row of nail outlets, the second nail cartridge has three rows of nail outlets, the first nail abutment has a row of nail grooves, the second nail abutment has three rows of nail grooves, and the plurality of protrusions form four rows. The height of the two rows of protrusions located on both sides of the second cutting groove and closer to the second cutting groove is higher than the height of the other two rows of protrusions.

4. The vascular anastomosis assembly according to claim 2, characterized in that, The first nail cartridge has three rows of nail outlets, the second nail cartridge has one row of nail outlets, the first nail abutment has three rows of nail abutment grooves, the second nail abutment has one row of nail abutment grooves, and the plurality of protrusions form four rows. The height of the two rows of protrusions located on both sides of the second cutting groove and closer to the second cutting groove is higher than the height of the other two rows of protrusions.

5. The vascular anastomosis assembly according to claim 2, characterized in that, The height of the two rows of bosses located on both sides of the second cutting groove and close to the second cutting groove is 0.35-0.50mm, and the height of the remaining rows of bosses is 0.10-0.25mm.

6. The vascular anastomosis assembly according to claim 5, characterized in that, The height of the two rows of bosses located on both sides of the second cutting groove and close to the second cutting groove is 0.40mm, and the height of the remaining rows of bosses is 0.15mm.

7. The vascular anastomosis assembly according to claim 2, characterized in that, The boss includes two boss portions disposed opposite each other along the extension direction of the second cutting groove.

8. The vascular anastomosis assembly according to claim 1, characterized in that, The front end of the anvil is provided with an eagle beak, and the side of the eagle beak facing the nail cartridge is provided with a groove. The front end of the nail cartridge has a protrusion that curves upward toward the eagle beak. When the nail cartridge assembly is closed with the anvil, the protrusion is engaged in the groove.

9. The vascular anastomosis assembly according to claim 1, characterized in that, It also includes a connecting component, which includes an upper connecting block and a lower connecting block connected to each other. The lower connecting block is connected to the anvil. The upper connecting block includes two symmetrically arranged upper limit arc surfaces, and the lower connecting block includes two symmetrically arranged lower limit arc surfaces. The projections of the upper limit arc surfaces and the corresponding lower limit arc surfaces coincide. A motion space for the cutting blade to rotate is formed between the two upper limit arc surfaces and the two lower limit arc surfaces. The cutting blade can rotate to the left or right up to 60° following the connecting component.

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

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