阅读说明：本技术 血管吻合器 (Blood vessel anastomat ) 是由 任振虎 张陈平 于 2020-06-08 设计创作，主要内容包括：本发明涉及一种血管吻合器,包括套管、第一套环和第二套环,套管包括中间的连接套管和位于连接套管两侧相互对称的导向套管,连接套管为直管且外侧面设有止退锯齿,导向套管的轴向截面呈外侧端截头的半梭形,套管的内管壁覆有人工血管,第一套环和第二套环分别从套管的两侧过盈配合地装套在套管外侧并与止退锯齿之间形成止退配合对从两侧套在套管外侧的血管或者人工血管进行锁定。本发明能够方便血管吻合操作,提高血管吻合效率,特别是能够适用于微型血管之间的吻合。(The invention relates to a blood vessel anastomat which comprises a sleeve, a first sleeve ring and a second sleeve ring, wherein the sleeve comprises a connecting sleeve in the middle and guide sleeves which are positioned on two sides of the connecting sleeve and are mutually symmetrical, the connecting sleeve is a straight pipe, stopping sawteeth are arranged on the outer side surface of the connecting sleeve, the axial section of each guide sleeve is in a half shuttle shape with a truncated end on the outer side, an artificial blood vessel is covered on the inner wall of the sleeve, the first sleeve ring and the second sleeve ring are respectively sleeved on the outer side of the sleeve from two sides of the sleeve in an interference fit mode, and the stopping matching is formed between the first sleeve ring and the stopping sawteeth to lock the blood vessel or. The invention can facilitate the anastomosis operation of blood vessels, improve the anastomosis efficiency of blood vessels, and is particularly suitable for the anastomosis between miniature blood vessels.)

1. A vascular anastomat comprising a cannula (1), characterized in that: the anti-blocking sleeve is characterized by further comprising a first sleeve ring (2) and a second sleeve ring (3), the sleeve (1) comprises a middle connecting sleeve (1-1) and guide sleeves (1-2) which are located on two sides of the connecting sleeve (1-1) and are symmetrical to each other, the connecting sleeve (1-1) is a straight pipe, anti-blocking sawteeth (1-3) are arranged on the outer side face of the connecting sleeve (1-1), the axial section of each guide sleeve (1-2) is in a half shuttle shape with a truncated outer end, an artificial blood vessel covers the inner wall of the sleeve (1), and the first sleeve ring (2) and the second sleeve ring (3) are sleeved on the outer side of the sleeve (1) from two sides of the sleeve (1) in an interference fit mode and form anti-blocking fit between the anti-blocking sawteeth (1-3) to lock the blood vessel or the artificial blood vessel sleeved on.

2. A vascular stapler according to claim 1, characterized in that: two sides of the outer side surface of the connecting sleeve (1-1) are respectively provided with backstop sawteeth (1-3) with opposite backstop directions.

3. A vascular stapler according to claim 1, characterized in that: the sleeve (1) is of an integrally formed structure.

Technical Field

The invention belongs to the technical field of vascular anastomosis, and particularly relates to a vascular anastomat.

Background

The existing vascular anastomosis method is commonly used as a suture needle type vascular anastomosis method, and the operation steps probably comprise: blood vessel exposure and other early preparation, blood vessel section trimming, blood vessel end or end side suturing and later operation. The vascular anastomosis mainly comprises the anastomosis between blood vessels and also comprises the anastomosis between the blood vessels and artificial blood vessels. Due to the flexibility of blood vessels, the existing suture needle type blood vessel anastomosis method has the problems of high operation difficulty and low anastomosis efficiency, and particularly has high requirement on the precision of microscopic operation for the anastomosis of microscopic blood vessels.

A patent entitled "vascular anastomat" (application No. 201911012909.8) discloses a vascular anastomat structure which is used for respectively loading blood vessels to be connected by using anastomosis sleeves on two sides and fixing the sleeving of the blood vessels by using a locking nail. The vascular anastomat can improve the operability of vascular anastomosis to a certain extent, but has certain requirements on the wall thickness of the anastomotic sleeves on two sides, which can limit the application of the anastomotic sleeves in micro vascular anastomosis on one hand, and has certain operability requirements on the operation needing locking nail connection operation on the other hand.

Disclosure of Invention

The invention aims to provide a blood vessel anastomat which is convenient for blood vessel anastomosis operation, improves blood vessel anastomosis efficiency and is particularly suitable for anastomosis of miniature blood vessels.

The technical scheme adopted by the invention for solving the technical problem is to provide a blood vessel anastomat, which comprises a sleeve, a first sleeve ring and a second sleeve ring, wherein the sleeve comprises a connecting sleeve in the middle and guide sleeves which are symmetrically arranged at two sides of the connecting sleeve, the connecting sleeve is a straight pipe, stopping sawteeth are arranged on the outer side surface of the connecting sleeve, the axial section of each guide sleeve is in a semi-fusiform shape with a truncated outer end, an artificial blood vessel is covered on the inner wall of the sleeve, and the first sleeve ring and the second sleeve ring are respectively sleeved on the outer side of the sleeve from two sides of the sleeve in an interference fit manner and form stopping fit with the stopping sawteeth to lock the blood vessel or the artificial blood vessel sleeved on the outer side of the sleeve from two.

And two sides of the outer side surface of the connecting sleeve are respectively provided with retaining sawteeth with opposite retaining directions.

The sleeve is of an integrally formed structure.

Advantageous effects

In the invention, the blood vessel or the artificial blood vessel is sleeved on two sides of the sleeve, the blood vessel or the artificial blood vessel can be fixed on the outer side of the sleeve by utilizing the interference stopping fit between the lantern ring and the sleeve, so that the anastomosis between two sections of blood vessels is realized, the artificial blood vessel is covered on the inner wall of the sleeve, and the transition effect can be exerted at the anastomosis position of the two sections of blood vessels.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Detailed Description

The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.

A vascular anastomat as shown in fig. 1 comprises a sleeve 1, a first collar 2 and a second collar 3.

The sleeve 1 is an integrated structure and comprises a connecting sleeve 1-1 in the middle and guide sleeves 1-2 which are symmetrically arranged at two sides of the connecting sleeve 1-1. The connecting sleeve 1-1 is a straight pipe, and two sides of the outer side surface of the connecting sleeve 1-1 are respectively provided with backstop sawteeth 1-3 with opposite backstop directions. The axial section of the guide sleeve 1-2 is in a semi-fusiform shape with a truncated outer end, so that the sleeving of the blood vessel and the lantern ring is facilitated. The inner wall of the sleeve 1 is covered with an artificial blood vessel, and can play a transition role at the anastomotic position of two sections of blood vessels.

The first sleeve ring 2 and the second sleeve ring 3 are respectively sleeved on the outer side of the sleeve 1 from two sides of the sleeve 1 in an interference fit manner and can form a backstop fit with the backstop sawteeth 1-3, so that a blood vessel or an artificial blood vessel sleeved on the outer side of the sleeve 1 from two sides of the sleeve 1 is locked, and the purpose of anastomosing the blood vessels on the two sides is achieved.

When the vascular anastomat is used: selecting different types of vascular anastomats according to the inner diameter of the blood vessel to be anastomosed; after the section of the blood vessel is trimmed, the first sleeve ring 2 is sleeved on the outer side of one blood vessel to be anastomosed, and the second sleeve ring 3 is sleeved on the outer side of the other blood vessel to be anastomosed; two blood vessels to be anastomosed are sleeved on two sides of the sleeve 1 by utilizing the guiding action of the two-side guiding sleeves 1-2, and the first sleeve ring 2 and the second sleeve ring 3 on the two sides are pushed to the connecting sleeve 1-1 and the backstop saw teeth 1-3 to form interference backstop fit, so that the two blood vessels are fixed and are anastomosed.