Transcatheter aorta valve implanting device with attached structure

Abstract

The invention discloses an aorta valve implanting device adopting catheter delivery and not simply fixed by friction, and particularly discloses a transcatheter aorta valve implanting device with an attached structure. A plurality of support arms are arranged in the middle of a tubular body of the device and are in a D shape after being unfolded completely, the support arms are fixed between the narrowest part, close to the heart, of an aorta and the narrowest part of an aortic valve ring to realize sufficient attachment between outer surfaces of the support arms and surrounding tissue, each support arm comprises three placement zones and two bent parts and can accurately control the position of a valve released on the aortic valve ring, and adverse event caused by simple fixation by friction at present are avoided, so that aortic valve lesion is better solved.

Description

technical field [0001] The invention belongs to the field of medical devices, and in particular relates to a structure-fit transcatheter aortic valve implantation device, which can be implanted through the aortic approach or through the apical approach. Background technique [0002] Heart valve disease affects approximately 300,000 people worldwide each year. These disorders involve abnormal valve leaflet tissue, for example, excessive tissue growth, tissue degradation or rupture, tissue hardening or calcification, or abnormal tissue misplacement throughout the cardiac cycle, known as annular dilation, ventricular remodeling, thereby Causes reduced valve function, eg, leakage or backflow of blood (ie, valvular insufficiency) or resistance to normal blood flow (ie, valvular stenosis). [0003] At present, the existing transcatheter aortic valve implantation valves all rely on the unique characteristics of the stent material, and only use friction to fix the implanted heart v...

AI Technical Summary

Problems solved by technology

However, due to the complexity of the disease structure, only relying on friction to position and fix the valve stent will cause the valve to be pulled and squeezed by the original structure after implantation, resulting in misalignment, resulting in the risk of displacement, falling off or popping out. resulting in the failure of valve implantation surgery

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