Self-adaptive medical positioning instrument

Abstract

The invention discloses a self-adaptive medical positioning instrument which comprises at least two positioning units, the positioning units are distributed along a first circumference, and the first circumference has a first diameter; each fixing unit is connected between every two adjacent positioning units; the fixing units are distributed along a second circumference, the second circumference is provided with a second diameter, and the circumferential size of at least one of the fixing units or the positioning units can be changed according to implantation of the valve prosthesis so as to be self-adaptive to the valve prosthesis. The positioning instrument is anchored to the native valve, then the valve prosthesis support is installed in the positioning instrument, and the problem that a physiological anatomical structure cannot directly bear large radial supporting force or a non-calcification structure clamps the prosthesis valve is solved.

Description

technical field [0001] The invention relates to a medical device, in particular to an adaptive medical positioning device, and belongs to the technical field of medical devices. Background technique [0002] Both the self-expanding valve and the ball-expanding valve in the prior art utilize radial support force to place a large prosthetic valve on a smaller native valve to replace the native valve and solve the problem of poor blood flow. However, for patients with aortic insufficiency or mild aortic stenosis with insufficiency, the calcification of the aortic valve is less, and the anatomical structure cannot directly bear a large radial support force or the prosthetic valve is stuck by the non-calcified structure. . Therefore, such patients cannot directly replace the original valve with the above-mentioned valve prosthesis. Furthermore, the size of the existing prosthetic valve usually does not match the size of the tissue at the patient's implantation site, and the hum...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of unsuitable and stable installation of the heart valve prosthesis in the prior art, the present invention proposes an adaptive medical positioning device, which can be stably anchored on the human aortic valve and adaptively adjusted to the heart valve prosthesis The matching relationship provides a stable anchoring support for the heart valve prosthesis

By anchoring the positioning device on the native valve, and then installing the valve prosthesis stent inside the positioning device, aortic insufficiency is effectively solved, or patients with mild aortic valve stenosis and insufficiency have less calcification of the aortic valve , the physiological and anatomical structure cannot directly bear the large radial support force or the prosthetic valve is stuck by the non-calcified structure

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