Asymmetric artificial aortic valve using eccentric limiting keys for intervention

Abstract

The invention discloses an asymmetric artificial aortic valve using eccentric limiting keys for intervention. The asymmetric artificial aortic valve comprises an asymmetric straight-barrel-shaped short stent main body containing a valve leaflet structure and an eccentric limiting component fixed on the outer side of the stent main body through a single connecting point. The stent main body with the valve leaflet is used for replacing the original diseased valve. The eccentric limiting structure fixed on the outer side of the stent in a single point mode is used for adapting to the position of an implantation system to naturally guide positioning of the main stent valve and providing support to prevent the main stent valve from sliding down.

Description

technical field [0001] The invention relates to the technical field of medical devices, and relates to an asymmetric artificial aortic valve for intervention positioned by an eccentric limit key. Background technique [0002] Transcatheter aortic valve implantation is a rapidly developing cardiac treatment technology in recent years, which provides treatment opportunities for many patients who cannot afford traditional surgery, allowing them to obtain the possibility of continued survival. However, prosthetic aortic valves currently available for implantation via a catheter from a peripheral artery (such as the femoral artery) are only approved for patients with aortic valve stenosis. However, the majority of patients with aortic insufficiency, whose incidence rate is similar to that of aortic stenosis, still do not have mature interventional valves through the peripheral arterial route. Because patients with aortic valve insufficiency have no calcified aortic valve stenosi...

AI Technical Summary

Problems solved by technology

The important reason is that when the delivery system is sent to the aortic valve orifice via the peripheral artery, the system has a long control distance and passes through at least one large vessel bend. It is difficult to control to be located in the center of the valve opening, so that it is difficult to accurately position the positioning keys of various annular three-point symmetrical designs

This type of valve needs to design a complex control system to adjust the position of the delivery system, so that the positioning key can be in place during implantation, which increases the difficulty of operation and the diameter of the delivery system

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