Interventional aortic valve stent system with inflating type ball bag

Abstract

The invention relates to an interventional aortic valve stent system with an inflating type ball bag. The interventional aortic valve stent system with the inflating type ball bag comprises a flexiblecylindrical aortic valve stent, a ring-shaped valve ring and the ball bag; the aortic valve stent is anchored on the inner wall of an aorta; the valve ring is arranged in the aortic valve stent, thecenter line of the valve ring and the center line of the aortic valve stent are superposed, and the outer wall of the valve ring is connected and fixed to the inner wall of the aortic valve stent; theend, which is away from the aortic valve, of the valve ring is connected with an elastic ball cage, and the ball bag is arranged in the ball cage; and under the effect of blood pressure difference, and the ball bag moves between the top of the ball cage and the valve ring until part of the ball bag extends into the valve ring and is attached to the inner wall of the valve ring or the ball bag moves towards the top of the ball cage and away from the valve ring. The interventional aortic valve stent system with the inflating type ball bag has the advantages that the ball bag replaces a traditional valve leaflet, disassembling and changing are facilitated, compared with a biological tissue valve leaflet, the ball bag does not have the 'chronic disease' of dysfunction of the valve, the risk of secondary surgical valve change of a patient is reduced, and the surgical safety is high.

Description

technical field [0001] The invention relates to the field of medical technology, in particular to an interventional inflatable balloon aortic valve stent system. Background technique [0002] There are four heart valves located between the atrium and ventricle, and between the ventricle and the blood vessels leaving the ventricle. They are the mitral valve, tricuspid valve, aortic valve, and pulmonary valve. Its function is similar to that of a "one-way valve", which prevents blood from returning to the ventricle that has just left, and ensures that the blood flow of the heart flows forward in one direction. The most common valve problems include valve insufficiency, regurgitation, and prolapse, where the valve does not close properly and requires valve repair or replacement. [0003] For patients with aortic valve stenosis, severe regurgitation, and prolapse, if they are elderly and have other serious comorbidities, the European Heart Surgery Risk Assessment score is highe...

AI Technical Summary

Problems solved by technology

②The valve is prone to calcification and has a limited service life

③ Expensive

The design product has excellent performance and convenient use, and is recognized by most clinical experts, but there are problems such as easy calcification of biological tissues and short service life.

When the TAVI system is used for a certain number of years, valve failure requires a second operation, which will bring great risks to the patient

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