CN111904517B

CN111904517B - Blood vessel anastomat

Info

Publication number: CN111904517B
Application number: CN202011020307.XA
Authority: CN
Inventors: 邢春苗; 陈情忠
Original assignee: Individual
Current assignee: Jiangsu Qirui Biotechnology Co ltd
Priority date: 2020-09-25
Filing date: 2020-09-25
Publication date: 2022-08-23
Anticipated expiration: 2040-09-25
Also published as: CN111904517A

Abstract

The invention discloses a blood vessel anastomat, which relates to the technical field of blood vessel anastomats and comprises an anastomosis part and a clamping part, wherein the anastomosis part comprises a left anastomosis ring and a right anastomosis ring which are oppositely arranged, the left anastomosis ring comprises a left ring body and a plurality of first circular arc sheets, and the right anastomosis ring comprises a right ring body and a plurality of second circular arc sheets; the clamping piece comprises a left clamping jaw and a right clamping jaw which are oppositely arranged, the left clamping jaw comprises a first open ring and a first jaw handle, and the right clamping jaw comprises a second open ring and a second jaw handle; this application technical scheme is different from the structure that coincide of tradition, cuts off the fixed needle when carrying out the coincidence to the vascular broken end, fixed needle unit fall behind the pincers go out can, avoided follow-up operation step of dismantling the fixed needle one by one, improved the convenience of operation greatly.

Description

Blood vessel anastomat

Technical Field

The invention relates to the technical field of vascular anastomosis instruments, in particular to a vascular anastomosis instrument convenient and fast to operate.

Background

The vascular anastomosis technique is an operation technique for connecting two blood vessels into one. The vascular anastomosis technique begins with one hundred years ago, for example, Carrel, a, (1908) and Hopfnet, E, (1903) and the like, and is widely applied to various surgical operations after one hundred years of development. Vascular anastomosis techniques are used in many fields such as microsurgery, plastic surgery, hepatobiliary surgery, cardiothoracic surgery, urology, gynecology, and the like. The success or failure of the vascular anastomosis technique, which is one of the most important steps in the above-mentioned surgery, is directly related to the survival of the transplanted tissue organ after the surgery. With the development of the vascular anastomosis technology, a suture anastomosis method and a mechanical nail ring anastomosis method are gradually developed and matured in the field; the blood vessel suture anastomosis method for carrying out butt-joint suture on the broken end of a blood vessel by utilizing a suture is a currently recognized blood vessel anastomosis standard method and is the most common blood vessel anastomosis method in clinical practice in the future; the vascular mechanical ring anastomosis method is that two vascular broken ends are respectively passed through and turned outwards to be fixed on independent anastomosis rings, and the anastomosis of the vascular broken ends is realized by means of the close anastomosis of the anastomosis rings.

Although the blood vessel suture anastomosis method is the 'gold' standard of blood vessel anastomosis, the method still has the following technical defects: 1. sutures can cause damage to the intima of the vessel; 2. exposure of the suture to the lumen can interfere with the normal flow of blood; 3. the risk of vascular embolism can be increased by operations such as anastomotic orifice inversion and the like; 4. the operation is complicated, and the operation time is long; 5. the requirement on the personal ability of a doctor is high, and the operation requirement is difficult to master skillfully in a short time without training; 6. the operation quality is easily influenced by the psychological and physiological fluctuation of doctors; 7. the blood vessel is elastic, soft and telescopic human tissue, and is difficult to position by manual suture and accurate suture of a suture needle. Therefore, the problems of untight suturing, too deep or shallow suturing, too tight or too loose suturing and the like easily occur in the operation, so that the blood at the joint is leaked; after operation, the influence of the suture needle and the thread is easy to cause vascular thrombosis; eventually leading to failure of the procedure.

For the mechanical blood vessel nail-ring anastomosis method, 2 plastic small rings are adopted, 6 fixing needles and 6 small holes are uniformly alternated on each small ring, and the broken end of a blood vessel at one side is fixed on the 6 fixing needles after passing through the inner hole of the plastic small ring and turning outwards for 90 degrees during anastomosis; the operation is repeated on the blood vessel at the other end, and the needles and the holes of the two needle rings are mutually embedded and involuted after the operation is finished. Although the application of the vascular mechanical nail anastomosis method can greatly simplify the operation steps and shorten the operation time, the following technical defects still exist: in the actual operation, the blood vessel eversion wall is hung on the fixing needle of the anastomosis ring, the metal fixing needle cannot be removed after the anastomosis of the left anastomosis ring and the right anastomosis ring is completed, in addition, the anastomosis ring is large in size and cannot be absorbed, foreign matters are formed in the anastomosis device in a human body for a long time, foreign matter rejection reaction of the human body can be caused, and even local infection is induced. At present, the blood vessel anastomat applied in the market is only suitable for large-caliber blood vessels and cannot be applied to the field of microsurgery.

Therefore, providing a miniature, absorbable vascular anastomat to improve the convenience of vascular anastomosis operation, reduce the technical risk of vascular tear in the operation, and improve the success rate of anastomosis becomes a problem to be solved urgently by those skilled in the art.

Disclosure of Invention

The present invention is directed to an absorbable vascular anastomotic device, which is different from the conventional anastomotic structure in that the absorbable material and the removable fixing needle unit prevent complications due to the residual of foreign materials after the operation. The fixing needle is cut off when the blood vessel broken end is anastomosed, and the fixing needle unit can be nipped out after falling, so that the convenience of the operation is greatly improved.

In order to solve the technical problems of inconvenient operation and unreasonable structural design of a vascular anastomosis structure in the prior art, the invention provides a vascular anastomat, which comprises an anastomosis part and a clamping part;

the anastomosis part comprises a left anastomosis ring and a right anastomosis ring which are oppositely arranged; the left anastomosis ring comprises a left ring body and a plurality of first circular arc pieces, wherein the outer ring surface of the left ring body is provided with a plurality of first convex blocks, each first convex block is provided with a clamping tooth opposite to the end surface of the right anastomosis ring, each first convex block is provided with a first convex rib extending outwards along two side walls of the outer ring surface, a first circular arc piece is arranged between every two adjacent first convex blocks, two ends of each first circular arc piece are respectively provided with a first connecting part, each first connecting part is connected to each first convex rib, and each first circular arc piece is provided with a plurality of first fixing needles along the radial outer side wall of the left ring body; the right anastomosis ring comprises a right ring body and a plurality of second circular arc sheets, a plurality of second convex blocks are arranged on the outer ring surface of the right ring body, each second convex block is provided with a clamping groove opposite to the end surface of the left anastomosis ring, second convex ribs are outwards extended from two side walls of each second convex block along the direction of the outer ring surface, a second circular arc sheet is arranged between every two adjacent second convex blocks, second connecting parts are respectively arranged at two ends of each second circular arc sheet, the second connecting parts are connected to the second convex ribs, and a plurality of second fixing needles are arranged on the second circular arc sheets and along the radial outer side wall of the right ring body;

the clamping piece comprises a left clamping jaw and a right clamping jaw which are oppositely arranged; the left clamping pliers comprise a first open ring and a first pliers handle, a plurality of first shearing sheets extend outwards from the end face of the first open ring, which is opposite to the right clamping pliers, the first shearing sheets are opposite to the second convex ribs, the first pliers handle is fixed on the outer ring face of the first open ring, and the end face of the left ring body, which is far away from the right ring body, is stopped on the first open ring; the right clamping pliers comprise a second open ring and a second pliers handle, a plurality of second shearing pieces extend outwards from the end face of the second open ring, the second shearing pieces are opposite to the first convex ribs, the second pliers handle is fixed to the outer ring face of the second open ring, and the end face, far away from the left ring body, of the right ring body is stopped on the second open ring.

Preferably, in the blood vessel anastomat provided by the invention, the structural integrity of the first arc sheet is favorable for taking out the clamp after subsequent dropping, wherein the first connecting part comprises a first winding pipe, the first winding pipe is formed by folding and winding two ends of the first arc sheet, and the first convex rib is inserted into the first winding pipe; above-mentioned first connecting portion is formed by coiling along the first circular arc piece hem of radially outwards turning over a book, and the hem after coiling forms an opening sleeve pipe, just is used for cup jointing first protruding muscle, and structural rationality and integrality are splendid.

Further, according to the blood vessel anastomat provided by the invention, when the second shear sheet cuts off the first convex rib, the cut first convex rib and the first arc sheet can fall off simultaneously, so that the step of taking out the first convex rib and the first arc sheet for multiple times of clamping is avoided, wherein the first convex rib is connected with the first winding pipe in an interference fit manner; interference connection can ensure that the first protruding muscle of cutting off is tightly hugged closely in first coiling intraductal, and the first protruding muscle of cutting off like this can drop as a whole with first circular arc piece, and follow-up as long as once pincers get take out the step can.

Preferably, in the blood vessel anastomat provided by the invention, the structural integrity of the second arc sheet is beneficial to taking out the clamp after subsequent dropping, wherein the second connecting part comprises a second winding pipe, the second winding pipe is formed by folding and winding two ends of the second arc sheet, and the second convex rib is inserted into the second winding pipe; the second connecting part is formed by winding a second arc sheet folded edge which is turned outwards along the radial direction, the folded edge after winding forms an opening sleeve, the opening sleeve is just used for sleeving the second convex rib, and the structural reasonability and the integrity are excellent.

Further, according to the blood vessel anastomat provided by the invention, when the second shear sheet cuts off the first convex rib, the cut first convex rib and the first arc sheet can fall off simultaneously, so that the step of taking out by clamping for multiple times is avoided, wherein the second convex rib is connected with the second winding pipe in an interference fit manner; the interference connection can ensure that the cut second convex rib is tightly embraced in the second winding pipe, so that the cut second convex rib and the second arc sheet fall as a whole, and the subsequent step of taking out the second convex rib by only one time of clamping can be realized.

Preferably, the vessel anastomat provided by the invention has the technical effect that the broken end of the vessel can be clamped and fixed only after the left ring body and the right ring body are aligned, and in order to facilitate the positioning and fixing of the left ring body, a plurality of first lug grooves are formed in the end face, facing the right clamping forceps, of the first split ring, and the first lugs are positioned and embedded in the first lug grooves.

Furthermore, according to the vascular anastomat provided by the invention, because the subsequent broken end of the blood vessel needs to penetrate through the left ring body and then turn outwards to be fixed on the first fixing needle on the first arc sheet, the left ring body needs to be held and fixed, in order to reliably pre-install the left ring body on the first opening ring, a left ring groove is formed in the joint of the end face of the first opening ring, which is opposite to the right clamping forceps, and the inner ring face, and the end face of the left ring body, which is far away from the right ring body, is blocked and embedded in the left ring groove.

Preferably, the vessel anastomat provided by the invention can achieve the technical effect of clamping and fixing the broken end of the vessel only after the left and right ring bodies are aligned, and in order to facilitate the positioning and fixing of the right ring body, a plurality of second lug grooves are formed in the end faces of the second open rings, which are opposite to the left clamping forceps, and the second lugs are positioned and embedded in the second lug grooves.

Furthermore, according to the vascular anastomat provided by the invention, because the cut end of the subsequent blood vessel needs to penetrate through the right ring body and then turn outwards to be fixed on the second fixing needle on the second arc sheet, the right ring body needs to be held and fixed, in order to reliably pre-install the right ring body on the second split ring, a right ring groove is formed at the joint of the end surface of the second split ring, which is opposite to the left clamping forceps, and the inner ring surface, and the end surface of the right ring body, which is far away from the left ring body, is in stopping fit with the right ring groove.

Preferably, the vessel anastomat provided by the invention prevents a first fixing needle on the first arc sheet from tearing the vessel broken end when the first convex rib is cut and the first arc sheet is pushed out simultaneously, and prevents a second fixing needle on the second arc sheet from tearing the vessel broken end when the second convex rib is cut and the second arc sheet is pushed out simultaneously, wherein the needle point of the first fixing needle inclines towards the right anastomosis ring direction, the needle point of the second fixing needle inclines towards the left anastomosis ring direction, the first fixing needle on the first arc sheet and the second fixing needle on the second arc sheet are centered and inclined through the arrangement, and the first fixing needle and the second fixing needle are obliquely pulled out relative to the vessel in the outward pushing process, so that the tearing phenomenon is avoided.

Preferably, in order to avoid secondary damage to a patient caused by a subsequent dismantling step, the vascular anastomat provided by the invention is combined with the realizability of a product structure, wherein the left ring body and the right ring body are made of absorbable materials, and the first circular arc sheet and the second circular arc sheet are made of stainless steel materials; the problem of convenience in manufacturing the left ring body and the right ring body made of absorbable materials is solved through the mutual combination of the two materials, and meanwhile, the convenience in manufacturing the arc sheet where the fixing needle is located is also remarkably improved.

Compared with the prior art, the vascular anastomat provided by the invention has the following advantages: it is different from the traditional anastomotic structure, and the absorbable material and the removable fixing needle unit avoid the complication caused by the residual foreign body after the operation. The fixing needle is cut off when the blood vessel broken end is anastomosed, and the fixing needle unit can be nipped out after falling, so that the convenience of the operation is greatly improved.

Drawings

FIG. 1 is a schematic structural diagram of a vascular anastomat according to the present invention;

FIG. 2 is a reference view of a vascular stapler according to the present invention in a use state;

FIG. 3 is an exploded view of a vascular stapler according to the present invention;

FIG. 4 is a schematic diagram of the structure of the left and right ring bodies of the vascular anastomotic device according to the present invention;

FIG. 5 is a schematic view of the alternate position configuration of FIG. 4;

FIG. 6 is a schematic structural view of a first arc piece and a second arc piece in the vascular anastomat of the present invention;

FIG. 7 is a schematic view of the alternate position configuration of FIG. 6;

FIG. 8 is an enlarged view of a portion of FIG. 6;

FIG. 9 is a schematic structural view of a left and a right clamping forceps of a vascular anastomat according to the present invention;

fig. 10 is a schematic diagram of the position-changing structure of fig. 9.

Wherein: 1. a left ring body; 2. a first arc piece; 3. a first bump; 4. clamping teeth; 5. a first rib; 6. a first winding tube; 7. a first fixing pin; 8. a right ring body; 9. a second arc piece; 10. a second bump; 11. a card slot; 12. a second rib; 13. a second winding tube; 14. a second fixing pin; 15. a first split ring; 16. a first plier handle; 17. first shearing slice; 18. a first tab slot; 19. a left ring groove; 20. a second split ring; 21. a second forceps handle; 22. second shearing; 23. a second tab slot; 24. and a right ring groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention; it should be noted that unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to 9, the present embodiment provides a vascular anastomat, which includes an anastomosis member and a clamping member;

the anastomosis part comprises a left anastomosis ring and a right anastomosis ring which are oppositely arranged; the left anastomosis ring comprises a left ring body 1 made of absorbable material and a plurality of first arc sheets 2 made of stainless steel material, the outer ring surface of the left ring body 1 is provided with a plurality of first convex blocks 3, each first convex block 3 is provided with a latch 4 which is opposite to the end surface of the right anastomosis ring, two side walls of each first convex block 3 along the outer ring surface direction extend outwards to form first convex ribs 5, a first circular arc piece 2 is arranged between every two adjacent first convex blocks 3, the two ends of the first arc piece 2 are respectively provided with a first connecting part, the first connecting parts are connected with the first convex ribs 5, as shown in figures 3-7, the first connecting part comprises a first winding pipe 6, the first winding pipe 6 is formed by folding and winding two ends of the first arc sheet 2, and the first convex rib 5 is inserted into the first winding pipe 6; the first convex rib 5 is connected with the first winding pipe 6 in an interference fit manner; the first arc piece 2 is provided with a plurality of first fixing needles 7 along the radial outer side wall of the left ring body 1, and as shown in fig. 6-8, the needle points of the first fixing needles 7 incline towards the right anastomosis ring;

the right anastomosis ring comprises a right ring body 8 made of absorbable material and a plurality of second arc sheets 9 made of stainless steel material, a plurality of second convex blocks 10 are arranged on the outer ring surface of the right ring body 8, a clamping groove 11 is arranged on the end surface of each second convex block 10, which is opposite to the left anastomosis ring, a second convex rib 12 extends outwards from both side walls of each second convex block 10 along the direction of the outer ring surface, a second circular arc piece 9 is arranged between every two adjacent second convex blocks 10, two ends of the second arc piece 9 are respectively provided with a second connecting part which is connected with the second convex rib 12, as shown in figures 3-7, the second connecting part comprises a second winding pipe 13, the second winding pipe 13 is formed by folding and winding two ends of the second arc sheet 9, and the second convex rib 12 is inserted into the second winding pipe 13; the second convex rib 12 and the second winding pipe 13 are connected in an interference fit manner; the second arc piece 9 is provided with a plurality of second fixing needles 14 along the radial outer side wall of the right ring body 8, and as shown in fig. 6 to 8, the needle points of the second fixing needles 14 are inclined towards the left anastomosis ring;

the clamping piece comprises a left clamping jaw and a right clamping jaw which are oppositely arranged; the left clamping pliers comprise a first open ring 15 and a first pliers handle 16, a plurality of first shearing sheets 17 extend outwards from the end face of the first open ring 15, which is opposite to the right clamping pliers, the first shearing sheets 17 are opposite to the second convex rib 12, the first pliers handle 16 is fixed on the outer ring surface of the first open ring 15, and the end face of the left ring body 1, which is far away from the right ring body 8, is stopped on the first open ring 15; referring to fig. 8 and 9, a plurality of first protrusion grooves 18 are formed in the end surface of the first split ring 15, which faces the right holding clamp, and the first protrusions 3 are positioned and embedded in the first protrusion grooves 18; a left ring groove 19 is formed at the joint of the end surface of the first split ring 15, which is opposite to the right clamping pliers, and the inner ring surface, and the end surface of the left ring body 1, which is far away from the right ring body 8, is in backstop fit with the left ring groove 19;

the right clamping pliers comprise a second open ring 20 and a second pliers handle 21, a plurality of second shearing sheets 22 extend outwards from the end face of the second open ring 20, which is opposite to the left clamping pliers, the second shearing sheets 22 are opposite to the first convex rib 5, the second pliers handle 21 is fixed on the outer ring face of the second open ring 20, and the end face of the right ring body 8, which is far away from the left ring body 1, is stopped on the second open ring 20; referring to fig. 8 and 9, a plurality of second protrusion grooves 23 are formed in the end surface of the second split ring 20, which faces the left holding clamp, and the second protrusions 10 are positioned and embedded in the second protrusion grooves 23; a right ring groove 24 is formed at the joint of the end surface of the second split ring 20, which is opposite to the left clamping pliers, and the inner ring surface, and the end surface of the right ring body 8, which is far away from the left ring body 1, is in backstop fit with the right ring groove 24;

the manufacturing process, the working process and the principle are as follows: the first circular arc piece 2 is arranged between the first convex blocks 3 of the left ring body 1, specifically, the first convex ribs 5 extending outwards from the first convex blocks 3 are inserted into the first winding pipe 6, the assembled left anastomosis ring is embedded into the left annular groove 19 of the first open ring 15, meanwhile, the first convex blocks 3 are ensured to be embedded into the first convex block grooves 18, the second circular arc piece 9 is arranged between the second convex blocks 10 of the right ring body 8, specifically, the second convex ribs 12 extending outwards from the second convex blocks 10 are inserted into the second winding pipe 13, the assembled right anastomosis ring is embedded into the right annular groove 24 of the second open ring 20, meanwhile, the second convex blocks 10 are ensured to be embedded into the second convex block grooves 23, positioning installation is completed, when in use, the clamping pliers are held by hands, the left anastomosis ring and the right anastomosis ring are arranged between two blood vessel broken ends, one of the blood vessel broken end penetrates through the left ring body 1, and the wall of the blood vessel broken end is hung on the first fixing needle 7, the other broken end of the blood vessel penetrates through the right ring body 8, the outward-turned wall is hung on the second fixing needle 14, the clamping forceps are held, the latch 4 of the left ring body 1 is clamped in the clamping groove 11 of the right ring body 8, meanwhile, the first shearing sheet 17 extending out of the first open ring 15 cuts off the second convex rib 12, the second shearing sheet 22 extending out of the second open ring 20 cuts off the first convex rib 5, the first arc sheet 2 together with the cut-off first convex rib 5 drops, the second arc sheet 9 together with the cut-off second convex rib 12 drops, the left ring body 1 and the right ring body 8 are connected under the matching of the latch 4 and the clamping groove 11, the clamping part is operated, the first open ring 15 and the second open ring 20 are removed, the blood vessel is spanned by means of the openings of the first open ring 15 and the second open ring 20, the clamping part is taken out, and the dropped first arc sheet 2 and the dropped second arc sheet 9 are taken out through the clamping forceps.

The invention is not described in detail, but is well known to those skilled in the art.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein; any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A blood vessel anastomat is characterized by comprising an anastomosis part and a clamping part;

the anastomosis part comprises a left anastomosis ring and a right anastomosis ring which are oppositely arranged; the left anastomosis ring comprises a left ring body and a plurality of first circular arc sheets, wherein the outer ring surface of the left ring body is provided with a plurality of first convex blocks, each first convex block is provided with a clamping tooth opposite to the end surface of the right anastomosis ring, each first convex block is provided with first convex ribs extending outwards along two side walls in the direction of the outer ring surface, a first circular arc sheet is arranged between every two adjacent first convex blocks, two ends of each first circular arc sheet are respectively provided with a first connecting part, each first connecting part is connected to each first convex rib, and each first circular arc sheet is provided with a plurality of first fixing needles along the radial outer side wall of the left ring body; the right anastomosis ring comprises a right ring body and a plurality of second circular arc pieces, wherein the outer ring surface of the right ring body is provided with a plurality of second convex blocks, each second convex block is provided with a clamping groove facing the end surface of the left anastomosis ring, each second convex block is provided with second convex ribs extending outwards along two side walls of the outer ring surface, a second circular arc piece is arranged between every two adjacent second convex blocks, two ends of each second circular arc piece are respectively provided with a second connecting part, each second connecting part is connected to each second convex rib, and each second circular arc piece is provided with a plurality of second fixing needles along the radial outer side wall of the right ring body;

the clamping piece comprises a left clamping jaw and a right clamping jaw which are oppositely arranged; the left clamping pliers comprise a first open ring and a first pliers handle, a plurality of first shearing sheets extend outwards from the end face of the first open ring, which is opposite to the right clamping pliers, the first shearing sheets are opposite to the second convex ribs, the first pliers handle is fixed on the outer ring face of the first open ring, and the end face of the left ring body, which is far away from the right ring body, is stopped on the first open ring; the right clamping pliers comprise a second open ring and a second pliers handle, a plurality of second shearing sheets extend outwards from the end face of the second open ring, which is opposite to the left clamping pliers, the second shearing sheets are opposite to the first convex rib, the second pliers handle is fixed on the outer ring face of the second open ring, and the end face, which is far away from the left ring body, of the right ring body is stopped on the second open ring;

the first connecting part comprises a first winding pipe, the first winding pipe is formed by folding and winding two ends of the first arc sheet, and the first convex rib is inserted into the first winding pipe; the first convex rib is connected with the first winding pipe in an interference fit manner; the second connecting part comprises a second winding pipe, the second winding pipe is formed by folding and winding two ends of the second arc sheet, and the second convex rib is inserted in the second winding pipe; the second convex rib is connected with the second winding pipe in an interference fit manner.

2. The vascular anastomat of claim 1, wherein the first open ring and the end face facing the right clamping forceps are provided with a plurality of first lug grooves, and the first lugs are positioned and embedded in the first lug grooves.

3. The vascular anastomat according to claim 1 or 2, wherein a left ring groove is formed at the joint of the end surface of the first split ring, which faces the right clamping forceps, and the inner ring surface, and the end surface of the left ring body, which is far away from the right ring body, is in stop fit with the left ring groove.

4. The vascular anastomat of claim 1, wherein the second open ring and the end face facing the left clamping forceps are provided with a plurality of second lug grooves, and the second lugs are positioned and embedded in the second lug grooves.

5. The vascular anastomat according to claim 1 or 4, wherein a right ring groove is formed at the joint of the end surface of the second split ring, which faces the left clamping forceps, and the inner ring surface, and the end surface of the right ring body, which is far away from the left ring body, is in stop fit with the right ring groove.

6. The vascular anastomat of claim 1, wherein the needle point of the first fixing needle is inclined towards the right anastomotic ring, and the needle point of the second fixing needle is inclined towards the left anastomotic ring.

7. The vascular anastomat of claim 1, wherein the left ring body and the right ring body are both made of absorbable materials, and the first circular arc piece and the second circular arc piece are both made of stainless steel materials.