Ring contraction device and mounting method thereof

Abstract

The invention discloses a ring contraction device and a mounting method thereof, and relates to the field of medical instruments. The ring contraction device comprises a plugging piece, a hemostatic disc, a puncture tube and a push rod; one end of the push rod penetrates through an inner cavity of the puncture tube and extends to the outside of the inner cavity of the puncture tube; the push rod is used for pushing out the plugging piece in the puncture tube to be propped open; and the hemostatic disc is further arranged at a pull wire to be connected with the plugging piece, and the distancebetween the plugging piece and the hemostatic disc can be effectively adjusted through the pull wire, and therefore the ring contraction effect is achieved. The ring contraction device is reasonable in structure; by means of the flexible design of the blocking piece, operative wounds are small, tissue recovery is fast, and the purpose of treating reflux is achieved; and the pull wire is made of high polymer materials, the surface is smooth, the minimally invasive purpose can be achieved, instruments are relatively small, smooth round tubes are adopted for conveying, the path is relatively simple, an operation is easy to operate, and production, research and development are easy to achieve, and therefore, the operation cost is reduced.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a ring constrictor used in auxiliary mitral valve surgery and an installation method thereof. Background technique [0002] The mitral valve is the left atrioventricular valve, also known as the mitral valve. It is attached to the left fibrous atrioventricular ring and is formed by the folds of the endocardium. There are two valves, the one located on the anteromedial side is the anterior cusp The larger, often called the large valve, is the boundary mark between the inflow tract and the outflow tract of the left ventricle. The one located on the posterolateral side is the posterior cusp valve, and the smaller one is often called the small valve. The bottom edges are often fused with each other, and sometimes a small secondary valve appears between the two valves. There are many tendons connected to the papillary muscle at the tip, edge and chamber surface. When the ventricle contr...

AI Technical Summary

Problems solved by technology

[0003] For the treatment of mitral valve regurgitation, a ring reducer is needed. However, the traditional ring reducer has a simple structure, a single function, and complicated operation. Moreover, the traditional ring reducer is mostly rigid, which increases the difficulty of the operation and prolongs the operation time. , thus causing unnecessary harm to the patient; secondly, the traditional constrictor is not equipped with a puncture needle device, which makes the treatment of mitral valve regurgitation more traumatic; therefore, there is an urgent need for an elastic or flexible ring shrinker

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