A mitral annuloplasty ring

Abstract

The invention provides a mitral valve forming ring. The mitral valve forming ring comprises an inner core, a heating coil and an outer layer, wherein the inner core comprises a connecting piece and a spring made from a memory alloy material; the connecting piece is fixed to the spring, and is used for enabling the spring to form a structure which is matched with a heart cardiac valve annulus; the heating coil is used for heating the spring in order to retract the mitral valve forming ring; the outer layer comprises an elastic element and a polymer fabric with biocompatibility; the elastic element is arranged outside the inner core and the heating coil; the polymer fabric is arranged outside the elastic element. The mitral valve forming ring is implanted through conventional thoracotomy; if a patient is unsatisfactory about valve regurgitation correction or relapses after mitral valve forming ring implanting operation, the size of the forming ring can be adjusted repeatedly on a beating heart through an embedded lead without secondary thoracotomy, so that the problem of mitral valve regurgitation relapse is solved effectively.

Description

technical field [0001] The invention relates to a medical device, in particular to a mitral annulus forming ring. Background technique [0002] There are four main heart valves in the normal human heart, namely mitral valve, tricuspid valve, aortic valve and pulmonary valve. They allow blood to flow through when they are open, and prevent blood from flowing back when they are closed, allowing blood to circulate normally throughout the body. Taking the mitral valve as an example, in a normal human heart, when the left ventricle is in a diastolic state, oxygenated blood enters the left ventricle from the left atrium through the open mitral valve. When the left ventricle contracts, blood is pushed out of the left ventricle, thereby closing the mitral valve to prevent blood from flowing back or back into the left atrium. Oxygenated blood is pumped out of the heart from the left ventricle and directed into the rest of the body. [0003] In patients with mitral regurgitation, w...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a mitral annuloplasty ring to solve the problem that after the existing conventional artificial mitral annuloplasty ring is implanted into the mitral valve annulus, the postoperative recurrence of the patient requires a high-risk secondary thoracotomy for adjustment. And the problem that the existing mitral annuloplasty ring cannot be adjusted multiple times

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