CN215349742U

CN215349742U - Artificial blood vessel structure

Info

Publication number: CN215349742U
Application number: CN202023132620.0U
Authority: CN
Inventors: 胡海瓯; 朱俊明; 孙立忠; 乔志钰; 高瑞乾; 段宏杰
Original assignee: Beijing Anzhen Hospital
Current assignee: Beijing Anzhen Hospital
Priority date: 2020-12-23
Filing date: 2020-12-23
Publication date: 2021-12-31
Anticipated expiration: 2030-12-23

Abstract

The utility model provides a novel artificial blood vessel structure, which comprises a main blood vessel and a plurality of branch blood vessels, wherein a support ring is arranged on the outer wall or the inner wall of each branch blood vessel at the joint of the main blood vessel and each branch blood vessel. The support ring structure can effectively prevent the branch blood vessel from being deformed and narrowed to cause blockage after being pressed, the structure of the support ring is preferably a spiral support ring or a reticular support ring or a parallel annular support ring, and the support ring can be made of high polymer materials or metal alloy materials with strong inertia and good biocompatibility. The diameter of the branch blood vessel at the connecting part can be slightly larger, namely the diameter of the side connected with the main blood vessel is larger, the diameter of the side connected with the branch blood vessel is smaller, the artificial blood vessel is similar to a cone, the technical effect of difficult blockage can be achieved after the artificial blood vessel is used for a period of time, and the long-term patency rate of the artificial blood vessel is effectively increased.

Description

Artificial blood vessel structure

Technical Field

The utility model relates to the technical field of medical instruments, in particular to an artificial blood vessel structure.

Background

Cardiovascular diseases are one of the common diseases harmful to human health, and the main and auxiliary treatment means of the patients with serious diseases is blood vessel transplantation, the source of autologous blood vessels is limited, so a large amount of artificial blood vessels are clinically needed as a transplant substitute.

The artificial blood vessel is a substitute for a plurality of severely stenotic or occlusive blood vessels, is mainly manufactured by synthetic materials such as nylon, Dacron (Dacron), Polytetrafluoroethylene (PTFE) and the like, is suitable for blood vessel circumfluence of all parts of the whole body, and has satisfactory effect when being applied to clinic.

The majority of the research in foreign countries for the manufacture of artificial blood vessels is the weaving of medical high molecular materials. The research of China is started at the end of 50 s and in the early 60 s, and the research is firstly carried out by weaving Nylon (Nylon), and then the Nylon is degraded and is broken after being implanted in organisms to be eliminated. At present, Dacron (Dacron) fibers are mostly adopted to weave artificial blood vessels, and the Dacron (Dacron) fibers are widely applied to clinic such as treatment of aortic aneurysm, aortic stenosis, upper and lower vena cava resection and replacement and the like. Artificial blood vessels are used in a large number of treatments for arterial disease: the blood is restored by replacing or bridging (blood vessel bypass operation) to treat artery diseases of blood vessel segments such as thoracic aorta, abdominal aorta, iliac artery, etc., such as arterial embolism or aneurysm. However, in the practical clinical application process, the artificial blood vessel has more problems, for example, in the operation of the aortic arch of the four branch blood vessels of the aorta, because the three branch blood vessels are emitted from the side of the ascending aorta, the three branch blood vessels are too short or too long after being trimmed, so that the branch artificial blood vessel is pressed to be narrow, which is not favorable for the long-term prognosis of the patient.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above technical problems, it is an object of the present invention to provide a novel artificial blood vessel structure having a reinforcing structure, which is not easily deformed by pressure and is not easily clogged.

The technical scheme adopted by the utility model is as follows: an artificial blood vessel structure comprises a main blood vessel and a plurality of branch blood vessels, wherein a support ring is arranged on the outer wall or the inner wall of each branch blood vessel at the joint of the main blood vessel and each branch blood vessel. The support ring structure can effectively prevent the branch blood vessel from being deformed and narrowed to cause blockage after being pressed, the structure of the support ring is preferably a spiral support ring or a reticular support ring or a parallel annular support ring, and the support ring can be made of high polymer materials or metal alloy materials with strong inertia and good biocompatibility.

Furthermore, the artificial blood vessel structure of the utility model, besides the arrangement of the support ring, can also make the diameter of the branch blood vessel at the connecting position slightly larger, namely the diameter of the side connected with the main blood vessel is larger, and the diameter of the side connected with the branch blood vessel is smaller, which is similar to a cone, and can obtain the technical effect of difficult blockage after being used for a period of time.

According to the artificial blood vessel structure, the angle between the branch blood vessel and the main blood vessel is 30-90 degrees. The angle value can be designed into various angles according to actual clinical requirements. Preferably, the four branched blood vessels are used in a four-branched blood vessel of an aorta, the main blood vessel is located in the X-axis direction of the three-dimensional stereo structure, three of the branched blood vessels are located in the Y-axis direction of the three-dimensional stereo structure, and the other branched blood vessel is located in the Z-axis direction of the three-dimensional stereo structure. The diameter of the main blood vessel is between 18mm and 36mm, and the diameter of the branch blood vessel is between 8mm and 14 mm.

The technical scheme provided by the utility model can achieve the following beneficial effects:

1. the support ring is arranged at the joint of the branch blood vessel and the main blood vessel, so that the anti-extrusion capacity of the artificial blood vessel is effectively improved, and the artificial blood vessel is not easy to deform and narrow;

2. the branch blood vessel is designed into a conical structure, so that the technical problem that the straight cylindrical structure is easy to block at the blood vessel joint is solved, and the long-term patency rate of the artificial blood vessel is effectively increased.

Drawings

FIG. 1 is a schematic perspective view of one embodiment of an artificial vascular structure of the present invention;

FIG. 2 is a front view of FIG. 1;

FIG. 3 is a schematic perspective view of another embodiment of an artificial vascular structure of the present invention;

FIG. 4 is an enlarged view of a portion of the junction of FIG. 3;

FIG. 5 is a schematic perspective view of yet another embodiment of an artificial vascular structure of the present invention;

FIG. 6 is an enlarged view of a portion of the junction of FIG. 5;

FIG. 7 is a schematic elevational view of yet another embodiment of an artificial vascular structure of the present invention;

FIG. 8 is a top view of FIG. 7;

FIG. 9 is a schematic perspective view of yet another embodiment of an artificial vascular structure of the present invention;

FIG. 10 is a front view of FIG. 9;

in the figure: 1-major blood vessel; 2-branch blood vessels; 31-a helical support ring; 32-mesh support ring; 33-parallel annular support rings.

Detailed Description

Embodiments of the present invention are described below with reference to the drawings. Elements and features depicted in one drawing or one embodiment of the utility model may be combined with elements and features shown in one or more other drawings or embodiments. It should be noted that the figures and description omit representation and description of components or processes that are not relevant to the present invention and that are known to those of ordinary skill in the art for the sake of clarity.

The utility model is further described below with reference to the accompanying drawings.

The artificial blood vessel structure comprises a main blood vessel 1 and a plurality of branch blood vessels 2, wherein the angle between each branch blood vessel and the main blood vessel is 30-90 degrees, and a support ring is arranged on the outer wall or the inner wall of each branch blood vessel at the joint of the main blood vessel and each branch blood vessel. The support ring structure can effectively prevent the branch blood vessel from being deformed and narrowed to cause blockage after being pressed, the structure of the support ring is preferably a spiral support ring or a reticular support ring or a parallel annular support ring, and the support ring can be made of high polymer materials or metal alloy materials with strong inertia and good biocompatibility. The diameter of the main blood vessel is between 18mm and 36mm, and the diameter of the branch blood vessel is between 8mm and 14 mm.

As shown in fig. 1 to 2, the branched blood vessel 2 is one-piece, and a spiral support ring 31 is provided on the outer wall or the inner wall of the junction.

As shown in fig. 3 to 4, the branch vessels 2 are four, the main vessel 1 is located in the X-axis direction of the three-dimensional structure, three of the branch vessels 2 are located in the Y-axis direction of the three-dimensional structure, the other branch vessel is located in the Z-axis direction of the three-dimensional structure, and each branch vessel is provided with a spiral support ring 31 on the outer wall or inner wall of the junction.

As shown in fig. 5 to 6, the branch vessels 2 are four, the main vessel 1 is located in the X-axis direction of the three-dimensional structure, three of the branch vessels 2 are located in the Y-axis direction of the three-dimensional structure, the other branch vessel is located in the Z-axis direction of the three-dimensional structure, and the outer wall or the inner wall of each branch vessel at the junction is provided with a mesh-shaped support ring 32.

As shown in fig. 7 to 8, the branch vessels 2 are four, the main vessel 1 is located in the X-axis direction of the three-dimensional structure, three of the branch vessels 2 are located in the Y-axis direction of the three-dimensional structure, the other branch vessel is located in the Z-axis direction of the three-dimensional structure, and parallel annular support rings 33 are disposed on the outer wall or inner wall of each branch vessel at the junction.

Furthermore, in the artificial blood vessel structure of the present invention, in addition to the arrangement of the support ring, the diameter of the branch vessel at the connection position can be slightly larger, that is, the diameter of the side connected with the main vessel 1 is larger, and the diameter of the side connected with the branch vessel 2 is smaller, similar to a cone shape (or the outlet of the branch vessel is trumpet-shaped), as shown in fig. 9 to fig. 10, so that the technical effect of being not easy to block after being used for a period of time can be obtained.

According to the artificial blood vessel structure, the support ring is arranged at the joint of the branch blood vessel and the main blood vessel, so that the anti-extrusion capacity of the artificial blood vessel is effectively improved, and the artificial blood vessel structure is not easy to deform and narrow; the branch blood vessel is designed into a conical structure, so that the technical problem that the straight cylindrical structure is easy to block at the blood vessel joint is solved, and the long-term patency rate of the artificial blood vessel is effectively increased.

Although the present invention and its advantages have been described in detail, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the utility model as defined by the appended claims. Moreover, the scope of the present application is not intended to be limited to the particular embodiments of the process, machine, means, methods and steps described in the specification. As one of ordinary skill in the art will readily appreciate from the disclosure of the present invention, processes, machines, means, methods, or steps, presently existing or later to be developed that perform substantially the same function or achieve substantially the same result as the corresponding embodiments described herein may be utilized according to the present invention. Accordingly, the appended claims are intended to include within their scope such processes, devices, means, methods, or steps.

Claims

1. An artificial blood vessel structure comprises a main blood vessel and a plurality of branch blood vessels, and is characterized in that a support ring is arranged on the outer wall or the inner wall of the branch blood vessel at the joint of the main blood vessel and the branch blood vessel; the support ring is a spiral support ring or a reticular support ring or a parallel annular support ring.

2. The vascular prosthesis structure of claim 1, wherein the branch vessel is slightly larger in diameter at the junction.

3. An artificial vascular structure as in claim 2, wherein the branch vessels taper at the junction.

4. An artificial vascular structure as claimed in any of claims 1 to 3, wherein the branch vessel and the main vessel are at an angle of 30 to 90 degrees.

5. The vascular prosthesis structure according to claim 1 or 3, wherein the branch vessels are four, the main vessel is located in the X-axis direction of the three-dimensional structure, three of the branch vessels are located in the Y-axis direction of the three-dimensional structure, and the other branch vessel is located in the Z-axis direction of the three-dimensional structure.