Device capable of locating and recycling transcatheter implantable aortic valve

Abstract

The invention relates to a device capable of locating and recycling a transcatheter implantable aortic valve. The device provided by the invention comprises a valve stent, a valve leaflet, an inner skirt and an outer skirt, wherein the valve stent comprises three grids; an influx end structure, a middle section structure and an outflow end structure are sequentially combined to form a whole; the middle section structure is formed by combining a straight connecting rod structure and a locating rod structure expanding and raising outward; the influx end structure is of a first horn mouth structure composed of multiple rhombic-shaped grid structures; the outflow end structure is of a second horn mouth structure composed of multiple rhombic-shaped grid structures; a connecting claw used for loading the valve stent is arranged at the tail end of the second horn mouth structure; the valve leaflet is fixed at the inner side of the middle section structure of the valve stent; the inner skirt is fixed at the inner side of the influx end structure of the valve stent and is fixedly connected with the valve leaflet; and the outer skirt is fixed at the outer side of the outflow end structure ofthe valve stent.

Description

technical field [0001] Embodiments of the present invention relate to the field of medical devices, and more particularly, to a positionable and retrievable transcatheter implantable aortic valve device for use in a mammalian heart. Background technique [0002] With increasing life expectancy and an increasingly aging population, the number of patients with aortic valve diseases including aortic stenosis (AS) and aortic regurgitation (AR) will increase. further growth. Aortic valve disease is a common type of valvular heart disease. Especially in the elderly, the incidence of aortic valve stenosis is increasing. And it gradually increases with age, reaching 4.6% to 13% of people aged ≥ 75 years in Europe and the United States. Initially, aortic valve disease can only be treated conservatively with drugs, but the prognosis of medical conservative treatment is poor, and the 5-year mortality rate can be as high as 50%. In the 1960s, human beings first implanted an artificia...

AI Technical Summary

Problems solved by technology

The Sapien series has the problem that it cannot be recycled, so the requirements for preoperative evaluation and intraoperative operation are relatively high; Poco’s Lotus series can be fully recycled, but there is a problem that the locking device is not easy to release during use; Medtronic’s CoreValve series has Part of the recoverable function, but there is a problem of poor positioning; and the ACURATE series is contrary to the CoreValve series, which has a positioning function, but cannot be recovered; in addition, if the aortic valve calcification is not serious for stenosis patients or simple aortic valve For patients with regurgitation / regurgitation, the above valves, except the ACURATE series, have the risk of displacement or falling off after implantation

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