CN113081122A

CN113081122A - Blood vessel anastomosis device

Info

Publication number: CN113081122A
Application number: CN202110540680.6A
Authority: CN
Inventors: 饶建华; 刘振川; 孙号; 罗森; 王卫中
Original assignee: Nanjing Kangyou Medical Science & Technology Co ltd
Current assignee: Nanjing Kangyou Medical Science & Technology Co ltd
Priority date: 2021-05-18
Filing date: 2021-05-18
Publication date: 2021-07-09

Abstract

The invention relates to a vascular anastomosis device, which comprises a first anastomosis ring formed by the involution of a first left half ring and a first right half ring, and a second anastomosis ring formed by the involution of a second left half ring and a second right half ring; the end faces of the first anastomosis ring and the second anastomosis ring which are oppositely arranged are provided with a plurality of bulges at intervals along the circumferential direction, and the bulges on the first anastomosis ring and the second anastomosis ring are arranged in a staggered way; the first anastomosis ring and the second anastomosis ring have an anastomosis state of being embedded together end to end and a separation state of being separated from each other; when the first anastomosis ring and the second anastomosis ring are in an anastomosis state, the anastomosis position is provided with an annular hole which penetrates through the protrusion, and a needle inlet and a needle outlet are reserved on the annular hole. The device can prevent blood vessel torsion and blood leakage of blood vessels, has high anastomosis quality, ensures proper tightness of the pull wire, and avoids the defect of too loose or too tight.

Description

Blood vessel anastomosis device

Technical Field

The invention relates to a vascular anastomosis device, and belongs to the technical field of medical instruments.

Background

Vascular anastomosis is a technique in which arteries and veins directly communicate with each other to form a vascular access therebetween, and even between arteries and veins. The suturing process is most effective in the conventional anastomosis method, which generally comprises the following steps: 1) pretreatment before anastomosis: comprises separating the broken end of the blood vessel, checking the blood flow condition, stripping the adventitia of the blood vessel, flushing the lumen of the broken end, and the like; 2) performing vascular anastomosis: according to the size of the blood vessel, a two-point method or a three-point method is adopted, and an intermittent or continuous eversion suture method is selected for carrying out the blood vessel anastomosis; 3) performing postanastomosis treatment: including loosening vascular clamps, treating arterial spasm, suturing wounds, etc. Wherein, in the step 2), the suture with the diameter of less than 2mm is preferably performed intermittently; continuous suturing can be used for those with a diameter of 2mm or more. Generally, continuous suturing has a good hemostatic effect, but if the suture is too tight, the anastomotic orifice may be narrowed.

Usually, the smaller arterial defect after cutting or debridement with sharp tool can be directly anastomosed at the end of the blood vessel. However, at present, the vascular anastomosis is mainly performed manually, and has the following disadvantages: 1) manual suturing easily causes blood vessel torsion; 2) the tightness degree of the pull line is not suitable due to the suture, and the pull line is easy to be too loose or too tight, so that the anastomosis quality of the blood vessels is influenced; 3) when the suture quality is low, blood leakage of blood vessels is easy to cause.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the vascular anastomosis device can prevent vascular torsion and vascular leakage and has high anastomosis quality, and the anastomosis device can ensure the proper tightness of the pull wire and avoid the defect of too loose or too tight.

In order to solve the technical problems, the technical scheme provided by the invention is as follows: a vascular anastomosis device comprises a first anastomosis ring formed by the involution of a first left half-ring and a first right half-ring, and a second anastomosis ring formed by the involution of a second left half-ring and a second right half-ring;

the end faces of the first anastomosis ring and the second anastomosis ring which are oppositely arranged are provided with a plurality of bulges at intervals along the circumferential direction, and the bulges on the first anastomosis ring and the second anastomosis ring are arranged in a staggered way; the first anastomosis ring and the second anastomosis ring have an anastomosis state of being embedded together end to end and a separation state of being separated from each other;

when the first anastomosis ring and the second anastomosis ring are in an anastomosis state, the anastomosis position is provided with an annular hole which penetrates through the protrusion, and a needle inlet and a needle outlet are reserved on the annular hole.

When the doctor performs the blood vessel anastomosis, the blood vessel is enclosed in the first anastomosis ring and the second anastomosis ring which are formed by the anastomosis, the operation which is not beneficial to the blood vessel anastomosis, such as the twisting stress of the blood vessel, can not be generated, and the blood vessel can be prevented from twisting. The end surfaces of the first anastomosis ring and the second anastomosis ring at the anastomosis part are arranged to be in a concave-convex shape with a plurality of protrusions, so that the protrusions of the first anastomosis ring are matched with the depressions between the adjacent protrusions of the second anastomosis ring, and the protrusions of the second anastomosis ring are matched with the depressions between the adjacent protrusions of the first anastomosis ring, therefore, the anastomosis part of the first anastomosis ring and the second anastomosis ring is provided with the annular hole which penetrates through the protrusions, and the suture needle is knotted after being sewed for one week along the annular hole, so that the suture operation can be completed.

In order to facilitate the involution to form the first anastomotic ring or the second anastomotic ring, the invention adopts the following two modes: (1) the first left half ring and the first right half ring are in magnetic attraction butt joint to form a first anastomosis ring, and similarly, the second left half ring and the second right half ring are also in magnetic attraction butt joint to form a second anastomosis ring. (2) The first anastomosis ring is provided with a first pincerlike handle, the first pincerlike handle comprises two first forceps arms which are hinged together, each first forceps arm comprises a first hand-held part and a first expansion part, and the first left half ring and the first right half ring are respectively connected with the two first expansion parts; similarly, a second clamp-shaped handle is arranged on the second anastomosis ring, the second clamp-shaped handle comprises two second clamp arms which are hinged together, the second clamp arms comprise a second holding part and a second expansion part, and the second left half ring and the second right half ring are respectively connected with the two second expansion parts.

In addition, the invention can be improved as follows: the first left half ring and the first right half ring are respectively provided with a key and a groove at the involution position, so that a first key groove limiting structure is formed; similarly, the second left half-turn and the second right half-turn are also respectively provided with a key and a groove at the involution position, so that a second key groove limiting structure is formed. Therefore, the first left half ring, the first right half ring, the second left half ring and the first right half ring can be limited in the length direction, and the first anastomotic ring and the second anastomotic ring are in an anastomotic state when needed.

In order to facilitate the anastomosis of the first anastomosis ring and the second anastomosis ring, the invention adopts the following two modes: (1) and when the first anastomosis ring and the second anastomosis ring are in an anastomosis state, the first anastomosis ring and the second anastomosis ring are connected together in a magnetic attraction mode. (2) At least one buckle structure used for connecting the first anastomosis ring and the second anastomosis ring is arranged between the first anastomosis ring and the second anastomosis ring.

Drawings

The invention will be further explained with reference to the drawings.

Fig. 1 is a schematic diagram of an anastomosis status according to a first embodiment of the present invention.

Fig. 2 is a schematic diagram of a separation structure in the second embodiment of the present invention.

Fig. 3 is an exploded schematic view of a first embodiment of the present invention.

FIG. 4 is a cross-sectional view of an anastomosis, in accordance with an embodiment of the present invention.

Fig. 5 is a schematic cross-sectional view of fig. 1.

Fig. 6 is a schematic diagram of an anastomosis state according to the second embodiment of the present invention.

Fig. 7 is an exploded view of fig. 6.

Fig. 8 is a schematic diagram of an anastomosis state according to the third embodiment of the present invention.

Fig. 9 is an exploded view of fig. 8.

Reference numerals: 1. a first anastomosis ring; 1-1, a first left half turn; 1-2, a first right half turn; 2. a second anastomosis ring; 2-1, the second left half turn; 2-2, the second right half turn; 3. an annular bore; 3-1, needle inlet; 3-2, needle outlet; 4. sewing needles and threads; 5. a first keyway limiting structure; 6. a second keyway limiting structure; 7. a buckle structure; 8. a first pincer-shaped handle; 8-1, a first hand-held portion; 8-2, a first expansion part; 8-3, a first hinge shaft; 9. a second pincerlike handle; 9-1, a second hand-held portion; 9-2, a second expansion part; 9-3 and a second hinge shaft.

Detailed Description

Example one

The blood vessel anastomosis device of the present embodiment, as shown in fig. 1-3, includes a first anastomosis ring 1 formed by a first left half-ring 1-1 and a first right half-ring 1-2 in a apposition manner, and a second anastomosis ring 2 formed by a second left half-ring 2-1 and a second right half-ring 2-2 in an apposition manner.

The first anastomosis ring 1 and the second anastomosis ring 2 have an anastomotic condition in which they are fitted together end to end (as shown in figure 1) and a detached condition in which they are mutually separated (as shown in figure 2). The end faces of the first anastomosis ring and the second anastomosis ring which are oppositely arranged are provided with a plurality of bulges at intervals along the circumferential direction, and the bulges of the first anastomosis ring and the bulges of the second anastomosis ring are arranged in a staggered mode, so that the end faces of the anastomosis part of the first anastomosis ring and the second anastomosis ring are respectively provided with mutually matched concave points and convex points (forming a concave-convex structure), the end parts are anastomosed, and the suturing operation of blood vessels is facilitated.

As shown in fig. 4-5, when the first anastomosis ring 1 and the second anastomosis ring 2 are in an anastomosis state, the anastomosis site thereof has an annular hole 3 passing through the protrusion, and a needle inlet 3-1 and a needle outlet 3-2 are reserved on the annular hole 3.

The embodiment can be further improved as follows: as shown in fig. 3, the first left half-turn 1-1 and the first right half-turn 1-2 are respectively provided with a key and a groove at the involution position, so as to form a first key groove limiting structure 5; similarly, the second left half-turn 2-1 and the second right half-turn 2-2 are also provided with a key and a groove at the involution positions, respectively, so as to form a second key groove limiting structure 6. The first key slot limiting structure 5 and the second key slot limiting structure 6 fix the degree of freedom of the vascular anastomat together and prevent torsion.

When a patient needs to perform a vascular anastomosis operation, the blood vessels are debrided firstly, so that the blood vessels at two broken ends recover normal structure and elasticity, and the lumens are washed by heparin normal saline without any blood clots and cellulose deposition, so that the intima is bright and complete. In addition, the vessel to be sutured needs to have both ends of a diameter close to each other.

After the appropriate preparation, the vessel anastomosis is started, first of all two mutually cooperating forceps are prepared and sterilized. The assistant includes the blood vessels with two ends to be anastomosed to form a straight line; the doctor uses forceps to wrap the blood vessel outside the first anastomosis ring or the second anastomosis ring respectively, the eversion length is about 0.5-1cm, and the adverse factors such as torsion stress of the blood vessel and the like on the blood vessel anastomosis are confirmed. After finishing, the first left anastomosis ring 1-1 and the first right anastomosis ring 1-2 are involuted along a straight line to form a first anastomosis ring 1 surrounding one broken blood vessel, the second left anastomosis ring 2-1 and the second right anastomosis ring 2-2 are involuted to form a second anastomosis ring 2 surrounding the other broken blood vessel, and then the first anastomosis ring 1 and the second anastomosis ring 2 are anastomosed, namely, the anastomosis is carried out through corresponding gaps formed by the concave-convex structures at the end parts.

After the anastomosis is finished, the blood vessel is sutured after the blood vessel is confirmed to have no twisting dislocation problem again. After a suture line is threaded on a suture needle with toughness by a doctor, the suture needle enters through a needle inlet 3-1 on an annular hole 3, the suture needle is sewed for a circle along a channel formed by an inner annular hole 3, then the suture needle comes out along a needle outlet 3-2 and is knotted, after the suture needle is finished, a first anastomosis ring 1 and a second anastomosis ring 2 are respectively retreated slightly, an outsourcing blood vessel is withdrawn, then the first anastomosis ring and the second anastomosis ring are respectively opened, and the blood vessel is placed on a healthy and complete soft tissue bed to complete the blood vessel anastomosis work.

Preferably, in this embodiment, the first left half-turn 1-1 and the first right half-turn 1-2 are magnetically coupled together to form the first anastomosis ring 1, and similarly, the second left half-turn 2-1 and the second right half-turn 2-2 are also magnetically coupled together to form the second anastomosis ring 2. Namely, the first anastomosis ring 1 and the second anastomosis ring 2 are made of magnetic materials, and the first anastomosis ring 1 and the second anastomosis ring 2 are formed into a ring shape by matching up and down through four semicircular anastomosis rings. And after the vascular anastomosis is finished, the magnetic ring is removed.

Preferably, in this embodiment, the first anastomosis ring 1 and the second anastomosis ring 2 are connected together in a magnetic attraction manner when in an anastomosis state.

Example two

The difference between the present embodiment and the first embodiment is: in this embodiment, the first anastomosis ring 1 and the second anastomosis ring 2 are not connected together in a magnetic attraction manner when in an anastomosis state. Instead, as shown in fig. 6 and 7, at least two fastening structures 6 for connecting the first anastomosis ring and the second anastomosis ring are disposed between the first anastomosis ring 1 and the second anastomosis ring 2.

This embodiment is coincide the circle with first anastomotic ring, second through buckle structure and is performed mutual gomphosis, fixes the blood vessel anastomat through the lock and coincide the blood vessel, then sews up skin a week through annular hole 3 (side suture hole), and later the suture is tied a knot, presses the buckle after accomplishing to sew up and separates the anastomat.

EXAMPLE III

The difference between the present embodiment and the first embodiment is: in this embodiment, the first left half-turn 1-1 and the first right half-turn 1-2 are not magnetically coupled together to form the first anastomosis ring 1, and similarly, the second left half-turn 2-1 and the second right half-turn 2-2 are not magnetically coupled together to form the second anastomosis ring 2.

Instead, as shown in fig. 8 and 9, a first forceps-shaped handle 8 is arranged on the first anastomosis ring 1, the first forceps-shaped handle 8 comprises two first forceps arms hinged together through a first hinge shaft 8-3, the first forceps arms comprise a first handheld portion 8-1 and a first expansion portion 8-2, and the first left half ring 1-1 and the first right half ring 1-2 are respectively connected with the two first expansion portions 8-2; similarly, the second anastomosis ring 2 is provided with a second forceps-shaped handle, the second forceps-shaped handle comprises two second forceps arms hinged together through a first hinge shaft 9-3, the second forceps arms comprise a second holding part 9-1 and a second expansion part 9-2, and the second left half-ring 2-1 and the second right half-ring 2-2 are respectively connected with the two second expansion parts 9-2.

The embodiment uses the pliers as the basic state, realizes opening and closing of the anastomotic vessel body of the blood vessel through respectively buckling two mutually anastomotic pliers. And then the head ends can be mutually matched to realize the vascular anastomosis. When in anastomosis, the two forceps respectively wrap the blood vessels at two ends to be anastomosed and simultaneously slightly retreat, the blood vessels are wrapped outside the anastomosis tube, two forceps are anastomosed, the anastomosis position is provided with a hollow ring, and the needle is wound for a circle from the hollow ring through the annular hole 3 (a side suture hole), so that the blood vessel anastomosis is realized. After the anastomosis is finished, the anastomosis is finished by winding out and knotting through the annular hole 3.

The present invention is not limited to the specific technical solutions described in the above embodiments, and other embodiments may be made in the present invention in addition to the above embodiments. It will be understood by those skilled in the art that various changes, substitutions of equivalents, and alterations can be made without departing from the spirit and scope of the invention.

Claims

1. A vascular anastomosis device, characterized by: the first half ring and the second half ring are combined to form a first matching ring;

2. The vascular anastomosis device of claim 1, wherein: the first left half ring and the first right half ring are in magnetic attraction butt joint to form a first anastomosis ring, and similarly, the second left half ring and the second right half ring are also in magnetic attraction butt joint to form a second anastomosis ring.

3. The vascular anastomosis device of claim 1, wherein: the first anastomosis ring is provided with a first pincerlike handle, the first pincerlike handle comprises two first forceps arms which are hinged together, each first forceps arm comprises a first hand-held part and a first expansion part, and the first left half ring and the first right half ring are respectively connected with the two first expansion parts; similarly, a second clamp-shaped handle is arranged on the second anastomosis ring, the second clamp-shaped handle comprises two second clamp arms which are hinged together, the second clamp arms comprise a second holding part and a second expansion part, and the second left half ring and the second right half ring are respectively connected with the two second expansion parts.

4. The vascular anastomosis device according to any one of claims 1 to 3, wherein: and when the first anastomosis ring and the second anastomosis ring are in an anastomosis state, the first anastomosis ring and the second anastomosis ring are connected together in a magnetic attraction mode.

5. The vascular anastomosis device according to any one of claims 1 to 3, wherein: at least one buckle structure used for connecting the first anastomosis ring and the second anastomosis ring is arranged between the first anastomosis ring and the second anastomosis ring.

6. The vascular anastomosis device according to any one of claims 1 to 3, wherein: the first left half ring and the first right half ring are respectively provided with a key and a groove at the involution position, so that a first key groove limiting structure is formed; similarly, the second left half-turn and the second right half-turn are also respectively provided with a key and a groove at the involution position, so that a second key groove limiting structure is formed.