Device for replacing aortic valve membrane or pulmonary valve membrane percutaneously

An aortic valve and pulmonary valve technology, applied in the field of medical devices, can solve the problems of inconvenient suturing of valves and stents, high surgical risk, and difficulty in suturing, and achieve the effects of reducing medical costs, reducing surgical pain, and prolonging life.

Active Publication Date: 2007-08-08
孔祥清
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to solve the problems that the existing percutaneous aortic valve replacement device is inconvenient to suture the valve and the stent so that it is difficult to suture completely, and the need to use a balloon to pre-expand the aortic valve during the operation has a high surgical risk. A novel percutaneous aortic valve replacement device with reasonable structure, convenient use and low surgical risk

Method used

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  • Device for replacing aortic valve membrane or pulmonary valve membrane percutaneously
  • Device for replacing aortic valve membrane or pulmonary valve membrane percutaneously

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] As shown in Figure 1 and 2.

[0036]A percutaneous aortic valve replacement device, comprising a grid-like stent 1 braided by nickel-titanium alloy wire, a three-leaflet valve 2, and the three-leaflet valve 2 is composed of porcine pericardium that has undergone anti-calcification treatment, and the three-leaflet unidirectional opening The valve is sewn, and it is fixed in the stent 1 through the polytetrafluoroethylene membrane 3 that is connected with the stent 1 in the circumferential direction. 4. One end of the aortic stent 6 is a bottomless structure that is convenient for supplying blood to the aorta. The other end of the outflow tract stent 4 is a bottomless structure that facilitates the inflow of left ventricular blood, and the diameter of the bottomless structure end of the aortic stent 6 is greater than the bottomless structure end of the left ventricular outflow tract stent 4 and the diameter of the valve support 5 , the polytetrafluoroethylene film 3 is f...

Embodiment 2

[0044] As shown in Figure 3 and 4.

[0045] A percutaneous pulmonary valve replacement device, comprising a grid-like stent 1 braided by nickel-titanium alloy wire, a trilobate valve 2, and the trilobate valve 2 is fixed in the stent 1 through a membrane 3 connected to the stent 1 in the circumferential direction, It is characterized in that the stent 1 is composed of a pulmonary artery stent 6', a valve stent 5, and a right ventricular outflow tract stent 4' that are connected to each other and connected in sequence. One end of the pulmonary artery stent 6' is a bottomless structure that facilitates blood supply to the pulmonary artery. The other end is connected to one end of the valve support 5, and the other end of the valve support 5 is connected to one end of the right ventricle outflow tract support 4', and the other end of the right ventricle outflow tract support 4' is a bottomless structure that is convenient for right ventricular blood to flow in, The diameter of th...

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Abstract

The invention relates to a novel percutaneous aortic valve and pulmonary valve exchanger, which is a self-expand support with biological valve, formed by the support in special shape and made from nickel titanium alloy skeleton and the three-blade one-way opening valve formed by pig heart, wherein, the support has fixing and supporting functions, and the pig heart forms three valves fixed in the support. The invention has little hurt, high safety and reduced complication.

Description

technical field [0001] The present invention relates to a medical device, especially a kind of artificial aortic valve which can replace the aortic valve and pulmonary valve without surgery, and specifically a percutaneous aortic valve or pulmonary valve replacement device. . Background technique [0002] Since Starr and Harken succeeded in replacing the mitral valve and aortic valve for patients with artificial valves respectively in 1960, surgical valve replacement is the most effective method for the treatment of severe heart valve diseases, and valve replacement is performed for more than 100,000 patients every year Operation. Artificial valves are divided into two categories: biological valves and mechanical valves. There are more than 100 types, each with its own advantages and disadvantages in clinical use, and the vast majority of artificial valve replacement operations are performed with the support of a systemic pulmonary circulation machine, which makes infants w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/06A61F2/84A61L27/16A61F2/24
Inventor 孔祥清
Owner 孔祥清
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