CN111096832A

CN111096832A - A vascular expansion stent

Info

Publication number: CN111096832A
Application number: CN201811556610.4A
Authority: CN
Inventors: 方萍
Original assignee: Shanghai Sandy Medical Technology Co ltd
Current assignee: Shanghai Sandy Medical Technology Co ltd
Priority date: 2018-12-19
Filing date: 2018-12-19
Publication date: 2020-05-05

Abstract

The invention discloses a blood vessel expansion bracket, belonging to the technical field of blood vessel expansion brackets. The vena cava/iliac vein blood collection device comprises a net barrel and a support piece, wherein the net barrel is composed of a vena cava net barrel and an iliac vein net barrel which are connected with each other, the support piece is arranged at one end of the vena cava net barrel, the other end of the vena cava net barrel is connected with the iliac vein net barrel, the outer diameter of the vena cava net barrel is 0.1-8mm larger than the inner diameter of the vena cava, the outer diameter of the iliac vein net barrel is 0.1-8mm larger than the inner diameter of the iliac vein, the vena cava net barrel and the iliac vein net barrel are respectively placed in the vena cava and the iliac vein at one side, a blood. The net cylinder is composed of a vena cava net cylinder and an iliac vein net cylinder which are connected with each other, and the vena cava net cylinder and the supporting piece are placed in the vena cava to be fixed due to the fact that the vena cava is not easy to move, so that the displacement of the vascular stent caused by the movement of a human body can be prevented, the effect of the vascular stent can be maintained for a long time, and the service life of the vascular stent is prolonged.

Description

Blood vessel expansion support

Technical Field

The invention relates to a blood vessel expansion bracket, belonging to the technical field of blood vessel expansion brackets.

Background

Iliac vein compression syndrome (also known as May-Thurner syndrome or Cockett syndrome) is a syndrome caused by lower limb venous return disorder caused by iliac vein compression, can cause lower limb venous hypertension, and then causes lower limb venous valve insufficiency, superficial varicosity, and can form secondary iliac-femoral vein thrombosis. It is believed that Cockett syndrome is a significant cause of lower extremity deep vein valvular insufficiency and thrombosis and superficial varicose veins, and that the occurrence of thrombosis can be avoided or reduced by making a diagnosis and effective treatment in the early clinical phase of Cockett syndrome.

At present, open surgery is less developed and is mostly replaced by interventional therapy. The intervention treatment adopts the dilatation of iliac vein lesion and the built-in stent operation, and long-term clinical follow-up proves that the iliac vein stent forming operation has the characteristics of safety, effectiveness and high long-term patency rate, and is an effective means for treating iliac vein compression syndrome. At present, the special bracket developed aiming at the iliac vein compression syndrome is less, and a good filter has the following characteristics: (1) the positioning is accurate and the release is easy; (2) the biocompatibility is good; (3) sufficient bearing force; (4) the iliac vein is maintained to be open and thrombus is not easy to generate; (5) restoring the iliac vein blood flow state and increasing blood flow.

At present, the iliac vein blood vessel stent is composed of a net barrel and a support piece, wherein the support piece is arranged at one end of the net barrel, the blood vessel stent is fixed with a blood vessel through the support piece, and the blood vessel is supported through the net barrel to recover the blood flow state. The iliac vein blood vessel support product in clinic has the problem of insufficient supporting force, iliac veins can move along with the movement of a human body, and the blood vessel support in the iliac veins is easy to shift, so that the blood vessel support loses the effect. And the vena cava is not easy to move, and can be used for fixing the vascular stent and improving the stability of the fixing structure. Therefore, a blood vessel expansion bracket is designed, which has enough supporting force to ensure that the iliac vein blood state is restored.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: provides a blood vessel expansion bracket, which solves the problem that the prior iliac vein blood vessel bracket has insufficient supporting force.

The technical problem to be solved by the invention is realized by adopting the following technical scheme:

a blood vessel expansion support comprises a net barrel and a support piece, wherein the support piece is arranged at one end of the net barrel, the net barrel comprises a vena cava net barrel and an iliac vein net barrel which are connected with each other, the support piece is arranged at one end of the vena cava net barrel, the other end of the vena cava net barrel is connected with the iliac vein net barrel, the outer diameter of the vena cava net barrel is 0.1-8mm larger than the inner diameter of the vena cava, the outer diameter of the iliac vein net barrel is 0.1-8mm larger than the inner diameter of the iliac vein, the vena cava net barrel and the iliac vein net barrel are respectively placed in the vena cava and the iliac vein at one side, a blood opening is arranged at the joint of the vena.

As a preferred example, the vena cava mesh cylinder, the iliac vein mesh cylinder and the supporting piece are all integrally formed by laser cutting or weaving of a nickel-titanium material.

As a preferred example, the junction of the vena cava mesh cylinder and the iliac vein mesh cylinder is provided with a developing point.

As a preferred example, the ports at the two ends of the mesh cylinder are respectively provided with a developing point.

As a preferred example, the blood opening is provided with a visualization point.

As a preferred example, the supporting piece is surrounded by 6-12 sawtooth wave bands to form a circumference, and the outer diameter of the circumference is 1-2mm larger than the outer diameter of the vena cava net cylinder.

The invention has the beneficial effects that: the net cylinder is composed of a vena cava net cylinder and an iliac vein net cylinder which are mutually connected, and the vena cava net cylinder and the supporting piece are placed in the vena cava for fixation because the vena cava is not easy to move, so that the displacement of the vascular stent caused by the movement of a human body can be prevented, the effect of the vascular stent can be maintained for a long time, and the service life of the vascular stent is prolonged; the junction of the vena cava mesh cylinder and the iliac vein mesh cylinder is provided with a blood opening, which does not affect the blood flow of the iliac vein on the other side.

Drawings

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

In the figure: the device comprises a net cylinder 1, a vena cava net cylinder 11, an iliac vein net cylinder 12, a blood opening 13, a support 2, a vena cava 3, an iliac vein 4 and a developing point 5.

Detailed Description

In order to make the technical means, the original characteristics, the achieved purpose and the efficacy of the invention easy to understand, the invention is further described with reference to the specific drawings.

As shown in figure 1, the blood vessel dilating support consists of a net barrel 1 and a support part 2, the support part 2 is arranged at one end of the net barrel 1, the net barrel 1 consists of a vena cava net barrel 11 and an iliac vein net barrel 12 which are mutually connected, the support part 2 is arranged at one end of the vena cava net barrel 11, the other end of the vena cava net barrel is connected with the iliac vein net barrel 12, the outer diameter of the vena cava net barrel 11 is 0.1-8mm larger than the inner diameter of the vena cava 3, the outer diameter of the iliac vein net barrel 12 is 0.1-8mm larger than the inner diameter of the iliac vein 4, the vena cava net barrel 11 and the iliac vein net barrel 12 are respectively placed in the vena cava 3 and the iliac vein 4 at one side, a blood opening 13 is arranged at the joint of the vena. The outer diameter of the support member 2 after being unfolded is larger than that of the net cylinder 1, so that the whole net cylinder 1 can be fixed conveniently.

The vena cava mesh cylinder 11, the iliac vein mesh cylinder 12 and the support member 2 are all formed by integrally laser cutting or weaving nickel-titanium materials.

The junction of the vena cava mesh tube 11 and the iliac vein mesh tube 12 is provided with a developing point 5. The ports at the two ends of the mesh cylinder 1 are respectively provided with a developing point 5. The blood opening 13 is provided with a visualization point 5. The supporting piece 2 is surrounded by 6-12 sawtooth wave bands to form a circumference, and the outer diameter of the circumference is 1-2mm larger than that of the vena cava mesh cylinder 11.

The net cylinder 1 consists of a vena cava net cylinder 11 and an iliac vein net cylinder 12 which are mutually connected, and the vena cava 3 is not easy to move, so that the vena cava net cylinder 11 and the supporting piece 2 are placed in the vena cava 3 for fixation, the displacement of the vascular stent caused by the movement of a human body can be prevented, the effect of the vascular stent can be maintained for a long time, and the service life of the vascular stent is prolonged; the connection part of the vena cava mesh cylinder 11 and the iliac vein mesh cylinder 12 is provided with a blood opening 13, which does not influence the blood flow of the iliac vein 4 on the other side.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. a vascular expansion support, it is made up of mesh cylinder and supporter, supporter is arranged at one end of mesh cylinder, it is characterized in that: described mesh cylinder is made up of interconnected vena cava mesh cylinder, iliac vein mesh cylinder, vena cava One end of the mesh cylinder is provided with a support, and the other end is connected with the iliac vein mesh cylinder. The venous mesh cylinder and the iliac vein mesh cylinder are placed in the vena cava and one side of the iliac vein. A blood opening is provided at the connection between the vena cava mesh cylinder and the iliac vein mesh cylinder, and the blood opening is communicated with the iliac vein on the other side.

2 . The vasodilator stent according to claim 1 , wherein the vena cava mesh cylinder, the iliac vein mesh cylinder and the support member are all made of nickel-titanium material by integral laser cutting or weaving. 3 .

3 . The vascular expansion stent according to claim 1 , wherein a developing point is provided at the junction of the vena cava mesh cylinder and the iliac vein mesh cylinder. 4 .

4 . The vascular expansion stent according to claim 1 , wherein the ports at both ends of the mesh cylinder are respectively provided with imaging points. 5 .

5 . The vascular expansion stent according to claim 1 , wherein the blood opening is provided with a developing point. 6 .

6 . The vascular expansion stent according to claim 1 , wherein the support member is surrounded by 6-12 zigzag wave bands, and the outer diameter of the circumference is 1-2 mm larger than the outer diameter of the vena cava mesh cylinder. 7 .