Vascular Anastomosis Devices

Abstract

A vascular anastomosis device includes an anastomosis ring with a vascular through hole, a vascular hanging needle is arranged on the anastomosis ring, the anastomosis rings are used in pairs, each anastomosis ring includes a body, a vascular compression ring, an everted vascular placement groove and a locking device, the vascular compression ring and the locking device are respectively arranged on the body; the vascular compression ring is arranged on the inner side of the anastomosis ring, and a plurality of hanging needle accommodating grooves are distributed on the outer side of the vascular compression ring, the radial cross section and the vascular compression surface of the vascular compression ring are both toothed ring-shaped structures, the vascular hanging needle is arranged on the vascular compression surface corresponding to the protruding part of the toothed ring, and the inner concave part of the toothed ring corresponds to the hanging needle accommodating groove; the locking device positions and fixes the anastomosis ring, and the vascular hanging needle is inserted into the hanging needle accommodating groove on the opposite side; the everted vascular placement groove is arranged on the periphery of the vascular compression ring. The locking device connects and aligns the anastomosis ring, and there is no need for precise alignment through the vascular hanging needle. The locking effect of the locking device during use is more solid, the risk of escape is reduced, and the safety of use is improved.

Description

Technical Field

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

[0002] In medicine, organ transplantation is a complex operation that transplants a healthy organ into a patient's body. Its purpose is to replace the patient's organ that has lost its function due to disease. With the continuous improvement of organ transplantation surgery technology and the level of perioperative treatment, the survival rate and quality of life of organ transplant patients have been significantly improved. Organ transplantation technology has become a recognized effective means of treating various end-stage organ diseases.

[0003] In liver and kidney transplantation, the most difficult and technically demanding part of implanting new organs after organ removal is the repair and reconstruction of the donor's internal arteries and veins, which is of decisive significance to the success rate of the operation and postoperative recovery. For example, the recipient side of the superior and inferior vena cava of the liver is difficult to leave long and is easy to retract, and the diameter of the blood vessels ranges from 10 to 30 mm, which cannot be achieved by anastomosis with existing instruments. At present, the common method in the world is still manual continuous eversion suture. Due to the small space, the operation is difficult and time-consuming. The reconstruction of blood vessels takes an average of 35-60 minutes, which makes the liver-free period during the operation long, which has a great impact on the heart, lungs and other organs. In addition, the quality control is affected by the doctor's skills, and complications such as postoperative bleeding and stenosis of the vascular interface are prone to occur. Therefore, there is a need for an anastomosis device that is easy to operate and has low technical requirements for doctors. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a vascular anastomosis device.

[0005] The technical solution adopted by the present invention to solve the technical problems existing in the known technology is:

[0006] The vascular anastomosis device of the present invention comprises two anastomosis rings with vascular through holes and used in pairs, and vascular hanging needles are arranged on the anastomosis rings. Each anastomosis ring comprises a body, a vascular compression ring, an everted vascular placement groove and a locking device, and the vascular compression ring and the locking device are respectively arranged on the body; the vascular compression ring is arranged on the inner side of the anastomosis ring, the top surface of the vascular compression ring forms a vascular compression surface, and the inner side of the vascular compression ring corresponds to the vascular through hole, and a plurality of hanging needle accommodating grooves are distributed on the outer side of the vascular compression ring, and the radial cross section and the vascular compression surface of the vascular compression ring are both toothed ring structures, and the protrusions and inner recesses of the toothed ring are distributed at intervals, and the vascular hanging needles are arranged on the vascular compression surface corresponding to the protrusions of the toothed ring, and the inner recesses of the toothed ring correspond to the hanging needle accommodating grooves; the locking device positions, connects and fixes a pair of anastomosis rings by means of a snap connection, and the vascular compression surfaces of the two anastomosis rings are opposite, and the vascular hanging needles on either side are correspondingly inserted into the hanging needle accommodating grooves on the opposite side; the everted vascular placement grooves are arranged on the periphery of the vascular compression ring.

[0007] The present invention can also adopt the following technical measures:

[0008] The two anastomotic rings have exactly the same structure.

[0009] The locking device is a locking ring, which is arranged on the outside of the anastomotic ring. It includes a locking ring wall, a locking hook and a locking groove. An outward-turned blood vessel placement groove is formed between the locking ring and the blood vessel compression ring. A plurality of locking hooks extending upward are distributed on the locking ring wall, and a plurality of locking grooves are distributed on the locking ring wall. The locking hooks and the locking grooves are spaced apart from each other.

[0010] The locking hook is a structure with a hook-shaped protrusion facing outward.

[0011] The locking slot is a fixing hole formed on the wall of the locking ring.

[0012] The blood vessel compression ring, the everted blood vessel placement groove and the locking ring are coaxially arranged.

[0013] A plurality of auxiliary tool slots are distributed on the outer side of the locking ring wall.

[0014] The anastomotic ring is made of polylactic acid, and the vascular hanging needle is made of absorbable metal material.

[0015] The advantages and positive effects of the present invention are:

[0016] In the vascular anastomosis device of the present invention, a locking device is used to connect and align the anastomosis ring, and the needle receiving groove provides a larger accommodating space for the vascular needle, and there is no need to accurately align the vascular needle and the needle receiving groove. The locking effect of the locking device during use is more solid, reducing the risk of escaping and improving the safety of use. The operation does not require the use of sutures, which speeds up the speed of vascular reconstruction; the structure is simple, the operation is convenient, the vascular anastomosis effect is good, and it is easy to master; in actual application, the time and complications of vascular anastomosis can be minimized. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the anastomotic ring of the vascular anastomotic device of the present invention;

[0018] Figure 2 is a schematic structural diagram of the vascular anastomosis device of the present invention;

[0019] Figure 3 It is a partial cross-sectional view of the locking device of the vascular anastomosis device of the present invention. DETAILED DESCRIPTION

[0020] The technical solution of the present invention is described in detail below through the accompanying drawings and specific embodiments.

[0021] like Figures 1 to 3As shown, the vascular anastomosis device of the present invention comprises an anastomosis ring 1 with a vascular through hole. When performing vascular anastomosis, the blood vessels at both ends pass through the corresponding anastomosis rings respectively. A blood vessel hanging needle 2 is arranged on the anastomosis ring, and the blood vessel hanging needle hangs the everted blood vessel wall. The anastomosis rings are used in pairs, and the blood vessel at one end corresponds to an anastomosis ring. Each anastomosis ring comprises a body 3, a blood vessel compression ring 4 and a locking device. The blood vessel compression ring and the locking device are respectively arranged on the body; the blood vessel compression ring 4 is arranged on the inner side of the anastomosis ring, the top surface of the blood vessel compression ring forms a blood vessel compression surface 5, and the inner side of the blood vessel compression ring corresponds to the blood vessel through hole 6, and the blood vessel compression ring is arranged on the inner side of the blood vessel compression ring. A plurality of needle-hanging accommodating grooves 7 are distributed on the outer side of the anastomotic ring. The radial cross-section and the vascular pressing surface of the vascular pressing ring are both toothed ring structures. The protruding parts and the inner recessed parts of the toothed ring are spaced apart from each other. A vascular hanging needle 2 is arranged on the vascular pressing surface corresponding to the protruding part of the toothed ring, and the inner recessed part of the toothed ring corresponds to the needle-hanging accommodating groove. The locking device positions and connects a pair of anastomotic rings. The vascular pressing surfaces of the two anastomotic rings are opposite, and the vascular hanging needles on either side are correspondingly inserted into the needle-hanging accommodating grooves on the opposite side. The everted vascular placement groove 10 is arranged on the outer periphery of the vascular pressing ring, and the everted blood vessel after passing through the anastomotic ring is placed in the everted vascular placement groove.

[0022] The two anastomotic rings used in pairs are completely identical and have the same structure, which reduces the number of production molds and is more convenient to use.

[0023] The locking device of the anastomotic ring is a locking ring 8, which is arranged on the outside of the anastomotic ring, and includes a locking ring wall 8a, a locking hook 8b and a locking slot 8c. An everted blood vessel placement slot 10 is formed between the locking ring and the blood vessel compression ring, and the excess blood vessel that has passed through the anastomotic ring and everted is placed in the everted blood vessel placement slot. A plurality of locking hooks extending upward are distributed on the locking ring wall, and a plurality of locking slots are distributed on the locking ring wall. The locking hooks and the locking slots are spaced apart from each other. The locking hooks can adopt a structure with a hook-shaped protrusion outwardly, and the locking slots can be a fixing hole provided on the locking ring wall, and the protruding structure of the locking hooks clamps the fixing hole. The matching positions of the two anastomotic rings are positioned by the corresponding matching of the locking hooks and the locking slots of the two anastomotic rings, and the blood vessel hanging needle can fall into the hanging needle accommodating slot, without the need to align the blood vessel hanging needle and the hanging needle accommodating slot.

[0024] The blood vessel compression ring, the everted blood vessel placement groove and the locking ring are coaxially arranged, thereby facilitating the operation during use.

[0025] A plurality of auxiliary tool slots 9 are distributed on the outer side of the locking ring wall, and the anastomotic ring is held by auxiliary tools to facilitate subsequent operations. The auxiliary tools are existing mature technologies, and the auxiliary tool slots are matched with the auxiliary tools.

[0026] When using, follow the steps below: insert the auxiliary tool into the auxiliary tool slot and lock it firmly; after passing the blood vessel to be anastomosed through the anastomotic ring, fold it outward and hang it evenly on the blood vessel hanging needle; use micro forceps to clamp the excess blood vessel after folding and put it into the everted blood vessel placement slot, and level the blood vessel in contact with the blood vessel compression surface; repeat the above steps for the blood vessel on the opposite side; insert the locking hooks of the anastomotic rings on both sides into the locking slots, and use surgical forceps to clamp each locking hook position accordingly to confirm that each locking hook and locking slot are completely closed.

[0027] The anastomotic ring is made of polylactic acid, and the vascular hanging needle is made of absorbable metal materials, such as magnesium alloy. This type of material is a relatively mature technology in this field. The anastomotic ring will be gradually absorbed by the human body during use, and there is no need for another surgery to remove the anastomotic ring, thereby reducing the patient's pain.

[0028] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this profession will, without departing from the scope of the technical solution of the present invention, certainly make some changes or modifications using the disclosed technical content to become an equivalent embodiment of equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are within the scope of the technical solution of the present invention.

Claims

1. A vascular anastomosis device, comprising two anastomosis rings with vascular through holes and used in pairs, wherein vascular hanging needles are arranged on the two anastomosis rings, characterized in that: Each of the anastomotic rings comprises a body, a vascular compression ring, an outward-turned vascular placement groove and a locking device, wherein the vascular compression ring and the locking device are respectively arranged on the body; the vascular compression ring is arranged on the inner side of the anastomotic ring, the top surface of the vascular compression ring forms a vascular compression surface, and the inner side of the vascular compression ring corresponds to the vascular through hole, and a plurality of needle-hanging accommodating grooves are distributed on the outer side of the vascular compression ring, the radial cross section and the vascular compression surface of the vascular compression ring are both toothed ring structures, the protrusions and the inner recesses of the toothed ring are spaced apart from each other, a vascular hanging needle is arranged on the vascular compression surface corresponding to the protrusion of the toothed ring, and the inner recess of the toothed ring corresponds to the hanging needle accommodating groove; the locking device positions and connects a pair of anastomotic rings by means of a snap connection, the vascular compression surfaces of the two anastomotic rings are opposite, and the vascular hanging needles on either side are correspondingly inserted into the hanging needle accommodating grooves on the opposite side; the outward-turned vascular placement groove is arranged on the periphery of the vascular compression ring; The locking device is a locking ring, which is arranged on the outside of the anastomotic ring and includes a locking ring wall, a locking hook and a locking slot. An outward-turned blood vessel placement groove is formed between the locking ring and the blood vessel compression ring. A plurality of locking hooks extending upward are distributed on the locking ring wall, and a plurality of locking slots are distributed on the locking ring wall. The locking hooks and the locking slots are spaced apart from each other. The locking hook is a structure with a hook-shaped protrusion outwardly, and the locking slot is a fixing hole opened on the locking ring wall.

2. The vascular anastomosis device according to claim 1, characterized in that: The structures of the two anastomotic rings are completely the same.

3. The vascular anastomosis device according to claim 1, characterized in that: The blood vessel compression ring, the everted blood vessel placement groove and the locking ring are coaxially arranged.

4. The vascular anastomosis device according to claim 3, characterized in that: A plurality of auxiliary tool slots are distributed on the outer side of the locking ring wall.

5. The vascular anastomosis device according to claim 1, characterized in that: The anastomotic ring is made of polylactic acid, and the vascular hanging needle is made of absorbable metal material.

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