Vascular anastomosis device for vascular surgery

Abstract

The invention relates to the technical field of medical apparatus and instruments, and discloses a vascular anastomosis device for vascular surgery, which comprises two groups of vascular connecting pieces arranged on a vascular main body in a sleeving manner, annular pieces are fixed to the outer ports, close to each other, of the two blood vessel connecting pieces. A plurality of groups of V-shaped grooves which are annularly arranged at equal intervals are formed in the outer side surface of the annular sheet; a central column is arranged between the two groups of blood vessel connecting pieces, and the central column is positioned in the blood vessel main body; according to the vascular anastomosis device for the vascular surgery department, rapid and accurate butt joint is conducted on a blood vessel body through cooperation of the blood vessel connecting piece, the annular piece, the central column and the auxiliary clamping piece, the accuracy of alignment of a blood vessel fracture is ensured, eversion suture is achieved, and therefore the quality of an anastomotic stoma is improved, rapid and accurate connection of vascular anastomosis is achieved, and the success rate of vascular anastomosis is increased. The blood vessel reconstruction time can be shortened to one minute, the non-hepatic stage in the operation is greatly reduced, and the burden on the heart, lung and other organs of a patient is relieved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, in particular to a vascular anastomosis device for vascular surgery. Background Art

[0002] The most effective treatment for aneurysms and aortic dissections involving the ascending aorta and aortic arch is surgical replacement of the ascending aorta and aortic arch with artificial blood vessels. This is especially true for aortic arch lesions requiring deep hypothermia, circulatory arrest, and brain protection. The surgery is complex and risky, and requires a high level of technical skill from the surgeon. From a surgical technical perspective, vascular anastomosis is the key to a successful operation. How to quickly and efficiently complete vascular anastomosis and effectively shorten the intraoperative circulatory arrest time is an important factor in improving the success rate of the operation and reducing postoperative complications.

[0003] Currently, the most common method in the world is still manual continuous eversion suturing. Due to the limited space, the operation is difficult, time-consuming and labor-intensive. Vascular reconstruction takes an average of 35-60 minutes, which prolongs the liver-free period during the operation and has a great impact on the heart, lungs and other organs. It also requires doctors to have high vascular surgery skills and skilled operation techniques. Therefore, we have proposed a vascular anastomosis device for vascular surgery to solve the above problems. Summary of the Invention

[0004] In response to the shortcomings of the existing technology, the present invention provides a vascular anastomosis device for vascular surgery, which solves the problem that the traditional manual continuous eversion suturing method is difficult to operate in a small space, time-consuming and labor-intensive. The anastomosis device can simplify the operation process and reduce the time required for surgery.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A vascular anastomosis device for vascular surgery includes two sets of vascular connectors sleeved on a vascular body;

[0006] An annular piece is fixed to the external ports of the two groups of vascular connectors that are close to each other;

[0007] The outer edge of the annular sheet is provided with a plurality of groups of V-shaped grooves arranged in an annular pattern and at equal intervals;

[0008] A central column is provided between the two groups of vascular connectors, and the central column is located in the main body of the blood vessel;

[0009] It also includes an auxiliary clamping piece, which is used to clamp and fit the two sets of blood vessel connectors;

[0010] The surface of the blood vessel connector is provided with an annular clamping groove for clamping the auxiliary clamping piece;

[0011] The vascular connector, the annular sheet and the annular clamp groove are all made of fibrin, which provides physical support in the initial stage and is subsequently dissolved by enzymes.

[0012] Preferably, a tip portion is formed between adjacent V-shaped grooves, and an arc portion is provided at the tip portion on the side where the two groups of annular sheets are close to each other.

[0013] Preferably, convex portions are provided at positions corresponding to the arc-shaped portions on the other side of the surfaces of the two groups of annular sheets.

[0014] Preferably, the auxiliary clamping member includes a mounting seat and a screw rod and a control ball fixed to one end of the screw rod through a threaded hole;

[0015] A symmetrically arranged bracket is slidably arranged on the mounting seat, and a first spring is fixedly installed between the two groups of the brackets, a connecting seat is fixed to the end of the bracket away from the mounting seat, and a symmetrically arranged clamping rod is elastically slid on the connecting seat, a strip opening is opened in the bracket, and a positioning rod is provided in the strip opening, the positioning rod and the bracket are fixedly connected, and a guide rod is also provided in the strip opening, and an extrusion block is fixed to one end of the guide rod for extruding and expanding the two groups of clamping rods, and the extrusion block is designed as an isosceles trapezoidal structure.

[0016] Preferably, a square groove is provided on one side of the mounting seat near the bracket position, one end of the two groups of brackets are respectively located in the square grooves provided in the mounting seat, and symmetrically arranged first limit rods are provided in the square grooves, the first limit rods are fixedly connected to the mounting seat, and one end of the bracket slides on the surface of the corresponding two groups of first limit rods through the through hole provided.

[0017] Preferably, the two sets of brackets are located at the position of the control ball and are designed to have a tiltable structure.

[0018] Preferably, a sliding groove adapted to the positioning rod is provided at one end of the guide rod away from the extrusion block, and the guide rod is on the surface of the positioning rod through the sliding groove, and a third spring is wound around the surface of the positioning rod, and the two ends of the third spring are fixedly connected to the guide rod and the bracket respectively.

[0019] Preferably, a pressing block is fixedly installed on the surface of the guide rod near the position of the third spring, and a moving opening adapted to the pressing block is opened on one side of the bracket, and the pressing block can slide in the moving opening opened on the bracket.

[0020] Preferably, a mounting hole adapted to the clamping rod is provided in the connecting seat, and the two groups of clamping rod parts on both sides are respectively located in the corresponding mounting holes provided in the connecting seat, and symmetrically arranged second limiting rods are provided in the mounting holes, and the second limiting rods and the connecting seat are fixedly connected, and the clamping rod slides on the surfaces of the corresponding two groups of second limiting rods through the sliding holes provided, and a second spring is wound around the surface of the second limiting rod, and the two ends of the second spring are respectively fixedly connected to the connecting seat and the clamping rod, and an arc groove adapted to the annular clamping groove is provided at the front end of the clamping rod.

[0021] Preferably, a rectangular groove is formed in the clamping rod away from the arc groove, and a roller is provided in the rectangular groove. The roller is rotatably connected to the clamping rod through a rotating shaft, and the roller fits into the inclined surface of the extrusion block.

[0022] Beneficial effects

[0023] The present invention provides a vascular anastomosis device for vascular surgery. Compared with the prior art, it has the following advantages:

[0024] Beneficial effects:

[0025] The vascular anastomosis device for vascular surgery utilizes the cooperation of vascular connectors, annular pieces, central columns and auxiliary clamps to quickly and accurately connect the main body of the blood vessel. It ensures the accuracy of the alignment of the vascular fracture and realizes eversion suturing, thereby improving the quality of the anastomosis and realizing rapid and accurate connection of the vascular anastomosis, which can shorten the vascular reconstruction time to 10-20 minutes, significantly reduce the intraoperative anhepatic period, and reduce the burden on the patient's heart, lungs and other organs. When suturing the main body of the blood vessel, the suture mouth remains taut, so that the two ends of the blood vessel can be aligned more closely. This not only reduces the amount of bleeding during the suturing process, because the blood vessel edges fit better and blood is not easy to leak from the suture mouth, but also the taut suture mouth helps doctors place the suture line more accurately, because the blood vessel edge will not move due to relaxation, which ensures that the suture line is accurately located at the required position, improves the use effect of the structure, and meets actual use needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 For the present invention Figure 1 A schematic diagram of the enlarged structure at point A;

[0028] Figure 3 This is a schematic structural diagram of two sets of vascular connectors separated according to the present invention;

[0029] Figure 4 It is a structural schematic diagram of the auxiliary clamping member of the present invention;

[0030] Figure 5 A partial diagram of the auxiliary clamping member structure of the present invention;

[0031] Figure 6 It is a schematic structural diagram of the connection between the auxiliary clamping member and the blood vessel connecting member of the present invention.

[0032] In the figure: 101, blood vessel body; 102, blood vessel connector; 103, annular sheet; 104, tip; 105, V-shaped groove; 106, arc-shaped portion; 107, convex portion; 108, annular clamping groove; 109, center column; 2, auxiliary clamping member; 201, mounting seat; 202, screw; 203, first limiting rod; 204, bracket; 205, control ball; 206, first spring; 207, connecting seat; 208, clamping rod; 209, roller; 210, extrusion block; 211, second spring; 212, second limiting rod; 213, guide rod; 214, third spring; 215, positioning rod; 216, pressing block. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0034] like Figure 1-6 As shown:

[0035] A vascular anastomosis device for vascular surgery includes two sets of vascular connectors 102 sleeved on a vascular body 101;

[0036] An annular piece 103 is fixed to the outer ports of the two groups of blood vessel connectors 102 close to each other;

[0037] The outer surface of the annular sheet 103 is provided with multiple groups of V-shaped grooves 105 arranged in an annular shape and at equal intervals. A tip portion 104 is formed between adjacent V-shaped grooves 105. An arc portion 106 is provided at the position of the tip portion 104 on the side where the two groups of annular sheets 103 are close to each other. A convex portion 107 is provided at the position corresponding to the arc portion 106 on the other side of the surface of the two groups of annular sheets 103.

[0038] A central column 109 is provided between the two sets of blood vessel connectors 102 , and the central column 109 is located inside the blood vessel body 101 ;

[0039] The auxiliary clamping member 2 is used to clamp and fit the two sets of blood vessel connectors 102. The auxiliary clamping member 2 includes a mounting seat 201, a screw 202 threadedly connected through a threaded hole, and a control ball 205 fixed to one end of the screw 202.

[0040] The two ends of the second spring 211 are fixedly connected to the connecting seat 207 and the clamping rod 208. The front end of the clamping rod 208 is provided with an arc groove that is adapted to the annular clamping groove 108.

[0041] The bracket 204 is provided with a strip opening, and a positioning rod 215 is provided in the strip opening. The positioning rod 215 and the bracket 204 are fixedly connected. A guide rod 213 is also provided in the strip opening. One end of the guide rod 213 is fixed with an extrusion block 210 that can extrude and expand the two sets of clamping rods 208. The extrusion block 210 is designed in an isosceles trapezoidal structure. The end of the guide rod 213 away from the extrusion block 210 is provided with a sliding groove that is adapted to the positioning rod 215. The guide rod 213 is positioned on the surface of the positioning rod 215 through the sliding groove. A third spring 214 is wound around the surface of the positioning rod 215. The two ends of the third spring 214 are respectively fixedly connected to the guide rod 213 and the bracket 204. A pressing block 216 is fixedly installed on the surface of the guide rod 213 near the position of the third spring 214. A moving opening adapted to the pressing block 216 is provided on one side of the bracket 204, and the pressing block 216 can slide at the moving opening opened in the bracket 204.

[0042] A rectangular groove is formed at a position of the clamping rod 208 away from the arc groove, and a roller 209 is provided in the rectangular groove. The roller 209 is rotatably connected to the clamping rod 208 through a rotating shaft, and the roller 209 is in contact with the inclined surface of the extrusion block 210.

[0043] A square groove is provided on one side of the mounting base 201 near the bracket 204. One end of the two sets of brackets 204 are respectively located in the square grooves of the mounting base 201. The square grooves are provided with symmetrically arranged first limiting rods 203. The first limiting rods 203 are fixedly connected to the mounting base 201. One end of the bracket 204 slides on the surface of the corresponding two sets of first limiting rods 203 through the through-holes provided therein.

[0044] The two sets of brackets 204 are located at the position of the control ball 205 and are designed to be tiltable;

[0045] The surface of the blood vessel connector 102 is provided with an annular clamping groove 108 for clamping the auxiliary clamping member 2;

[0046] The vascular connector 102 , the annular sheet 103 and the annular clamping groove 108 are all made of fibrin, which provides physical support in the initial stage and is subsequently dissolved by enzymes.

[0047] In this embodiment, during use of the vascular anastomosis device for vascular surgery, first, external forceps (not shown) are used to place two sets of vascular connectors 102 on the outside of two sets of disconnected vascular bodies 101. Subsequently, the two ends of the central column 109 are respectively inserted into the disconnected vascular bodies 101. The two ends of the central column 109 are designed to be spherical to prevent the sharp spikes from puncturing the vascular bodies 101.

[0048] like Figure 2 Next, the disconnection port of the blood vessel body 101 is turned outward using forceps to turn it over the tip 104 of the annular piece 103. A curved portion 106 is provided on one side of the annular piece 103 to prevent the blood vessel body 101 from being punctured during the eversion process.

[0049] When the blood vessel body 101 is folded to the position of the protruding portion 107, the protruding portion 107 can effectively prevent the blood vessel body 101 from falling off when everting;

[0050] During the eversion of the blood vessel body 101, the central column 109 provides a stable blocking support and acts as a blocking point, allowing a single side of the blood vessel body 101 to be smoothly folded onto the annular sheet 103, thereby reducing distortion of the blood vessel during the folding process and improving the eversion effect.

[0051] Until the disconnection ports of the two groups of blood vessel bodies 101 are respectively turned outward onto the two groups of annular sheets 103;

[0052] like Figure 6 As shown: Then, the pressing block 216 is pushed, thereby driving the guide rod 213 to slide on the surface of the positioning rod 215, stretching the third spring 214, and at the same time pushing the extrusion block 210 to move. The extrusion block 210 adopts an isosceles trapezoidal structure design, and the inclined surfaces on both sides can drive the corresponding two groups of clamping rods 208 to move away from each other to achieve expansion. A roller 209 is provided at one end of the clamping rod 208. When the extrusion block 210 squeezes the clamping rod 208, it can reduce the friction between the two and improve the smoothness of the extrusion;

[0053] As the two groups of clamping rods 208 move away from each other and expand, they slide on the surface of the second limiting rod 212 and compress the second spring 211 at the same time. The vascular connector 102 is placed between the two groups of clamping rods 208 using tweezers. Subsequently, the pressing block 216 is released. At this time, the third spring 214 in the stretched state begins to contract, driving the guide rod 213 to slide on the positioning rod 215. At the same time, the guide rod 213 drives the squeezing block 210 to release the squeezing of the clamping rod 208. When the compression is released, the second spring 211 in the compressed state will rebound and drive the two groups of clamping rods 208 to move closer to each other, so that they are stuck in the annular clamping groove 108, thereby clamping the vascular connector 102. The arc surface provided at one end of the clamping rod 208 can better fit the annular clamping groove 108 opened in the vascular connector 102, thereby improving the stability of the clamping.

[0054] Next, the screw 202 is rotated to drive the control ball 205 to move forward. The two sets of brackets 204 are located at the position of the control ball 205 and are designed in an inclined structure. As the control ball 205 continues to move, the distance between it and the bracket 204 continues to expand. At the same time, the first spring 206 in the stretched state will drive the two sets of brackets 204 to always fit with the surface of the control ball 205, so that the bracket 204 slides on the surface of the first limiting rod 203. The two sets of brackets 204 are close to each other, and the clamping rod 208 maintains the clamping state on the vascular connector 102, thereby driving the two sets of vascular connectors 102 to fit together. At this time, the disconnection port portion of the vascular main body 101 has been turned outward onto the vascular connector 102. When the two sets of vascular connectors 102 fit together, the two disconnected sets of vascular main bodies 101 are docked and anastomosed.

[0055] The two groups of vascular bodies 101 are sutured using suture needles and absorbable sutures. The V-groove 105 opened on the annular sheet 103 is the suture area. The vascular body 101 is located at the position of the V-groove 105 and is in a taut state, which helps to improve the suturing effect of the vascular body 101. After the suturing is completed, the vascular connector 102, the annular sheet 103 and the central column 109 do not need to be disassembled. These components are made of fibrin. The plasminogen activator (such as tPA) in the body fluid will begin to act on the fibrin and activate it into plasmin. Plasmin can recognize and cleave specific peptide bonds in the fibrin molecules, breaking down the large molecular fibrin into small molecular fragments. These small molecular fragments can be cleared through the normal metabolic pathways in the body and will not accumulate in the body. Since this process is automatic and does not require external intervention, the connector and the connecting column can naturally dissolve within a certain period of time, be decomposed by the enzyme system in the body, and eventually be cleared. At the same time, fibrin can also promote the growth and healing of vascular endothelial cells and accelerate the recovery of blood vessels;

[0056] This solution utilizes the cooperation of the vascular connector 102, the annular piece 103, the central column 109 and the auxiliary clamping piece 2 to quickly and accurately connect the vascular body 101, which ensures the accuracy of the alignment of the vascular fracture and realizes the eversion suture, thereby improving the quality of the anastomosis and realizing the rapid and accurate connection of the vascular anastomosis, which can shorten the vascular reconstruction time to 10-20 minutes, significantly reduce the intraoperative anhepatic period, and reduce the burden on the patient's heart, lungs and other organs. When suturing the vascular body 101, the suture mouth remains taut, so that the two ends of the blood vessel can be more closely aligned. This not only reduces the amount of bleeding during the suturing process, because the blood vessel edges fit better and blood is not easy to leak from the suture mouth, but also the taut suture mouth helps doctors place the suture line more accurately, because the blood vessel edge will not move due to relaxation, which ensures that the suture line is accurately located at the required position, improves the use effect of the structure, and meets actual use needs.

[0057] It should be noted that the diameter of the central column 109 is smaller than the diameter inside the blood vessel so as not to affect the flow of blood.

[0058] At the same time, the contents not described in detail in this specification belong to the existing technology well known to those skilled in the art.

Claims

1. A vascular anastomosis device for vascular surgery, characterized in that: It comprises two groups of blood vessel connectors (102) sleeved on a blood vessel body (101); An annular sheet (103) is fixed to the mutually adjacent external ports of the two groups of blood vessel connectors (102); The outer edge of the annular plate (103) is provided with a plurality of groups of V-shaped grooves (105) arranged in an annular shape and at equal intervals; A central column (109) is provided between the two groups of blood vessel connectors (102), and the central column (109) is located inside the blood vessel body (101); It also includes an auxiliary clamping piece (2), which is used to clamp and fit the two sets of blood vessel connectors (102) accordingly; The surface of the blood vessel connector (102) is provided with an annular clamping groove (108) for clamping the auxiliary clamping member (2); The vascular connector (102), the annular sheet (103) and the annular clamping groove (108) are all made of fibrin, which provides physical support in the initial stage and is subsequently dissolved by enzymes.

2. The vascular anastomosis device for vascular surgery according to claim 1, characterized in that: A tip portion (104) is formed between adjacent V-shaped grooves (105), and an arc portion (106) is provided at the position of the tip portion (104) on the side where the two groups of annular sheets (103) are close to each other.

3. The vascular anastomosis device for vascular surgery according to claim 2, characterized in that: A convex portion (107) is provided at a position corresponding to the arc portion (106) on the other side of the surface of the two groups of annular sheets (103).

4. The vascular anastomosis device for vascular surgery according to claim 1, characterized in that: The auxiliary clamping member (2) comprises a mounting seat (201), a screw rod (202) threadedly connected via a threaded hole, and a control ball (205) fixed to one end of the screw rod (202); A symmetrically arranged bracket (204) is slidably mounted on the mounting seat (201), and a first spring (206) is fixedly mounted between two groups of the brackets (204). A connecting seat (207) is fixedly mounted on one end of the bracket (204) away from the mounting seat (201), and symmetrically arranged clamping rods (208) are elastically slidably mounted on the connecting seat (207). A strip-shaped opening is provided in the bracket (204), and a positioning rod (215) is provided in the strip-shaped opening. The positioning rod (215) and the bracket (204) are fixedly connected. A guide rod (213) is also provided in the strip-shaped opening. An extrusion block (210) capable of extruding and expanding the two groups of clamping rods (208) is fixedly mounted on one end of the guide rod (213), and the extrusion block (210) is designed to be an isosceles trapezoidal structure.

5. The vascular anastomosis device for vascular surgery according to claim 4, characterized in that: A square groove is provided on one side of the mounting seat (201) near the bracket (204), and first limiting rods (203) arranged symmetrically are provided in the square groove. One end of the bracket (204) slides on the surfaces of the corresponding two groups of first limiting rods (203) through the provided through hole.

6. The vascular anastomosis device for vascular surgery according to claim 4, characterized in that: The two sets of brackets (204) are located at the positions of the control balls (205) and are designed to be tiltable.

7. The vascular anastomosis device for vascular surgery according to claim 5, characterized in that: A sliding groove adapted to the positioning rod (215) is provided at one end of the guide rod (213) away from the extrusion block (210); the guide rod (213) is positioned on the surface of the positioning rod (215) through the sliding groove; and a third spring (214) is wound around the surface of the positioning rod (215).

8. The vascular anastomosis device for vascular surgery according to claim 7, characterized in that: A pressing block (216) is fixedly mounted on the surface of the guide rod (213) near the position of the third spring (214).

9. The vascular anastomosis device for vascular surgery according to claim 7, characterized in that: A mounting hole adapted to the clamping rod (208) is provided in the connecting seat (207), and a second limiting rod (212) arranged symmetrically is provided in the mounting hole. The clamping rod (208) slides on the surfaces of the corresponding two groups of second limiting rods (212) through the sliding holes provided therein. A second spring (211) is wound around the surface of the second limiting rod (212), and an arc groove adapted to the annular clamping groove (108) is provided at the front end of the clamping rod (208).

10. The vascular anastomosis device for vascular surgery according to claim 9, characterized in that: The clamping rod (208) is provided with a rectangular groove at a position away from the arc groove, and a roller (209) is provided in the rectangular groove.

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