Anchor nail with locking function, anchor nail assembly and contraction ring system

Abstract

The invention provides an anchor nail with a locking function. The anchor nail is used for fixing at least one flexible slender piece on human tissue, and comprises a shell, a winding shaft rotatably arranged in the shell, and a spiral nail rotatably connected with the far end of the shell; the spiral nail rotates relative to the shell so as to be anchored into human tissue; and the flexible slender piece movably penetrates through the outer circumferential face of the shell and the outer circumferential face of the winding shaft, and the winding shaft rotates relative to the shell to wind the flexible slender piece till the flexible slender piece is locked in a radial gap between the winding shaft and the shell. The anchor nail provided by the invention has a locking function and does not need an additional locking device, so that the number of instruments can be reduced, the operation steps can be simplified, and the operation time can be saved. The invention further provides an anchor nail assembly and a contraction ring system.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an anchor with a locking function, an anchor component and a shrink ring system. Background technique [0002] Mitral regurgitation is one of the most common valvular lesions today. The main causes of lesions are mitral annulus dilatation, chordal insufficiency, mitral mucus degeneration, leaflet prolapse, rheumatic heart valve disease, ischemia Sexual diseases, etc. Direct mitral valvuloplasty and artificial valve replacement are effective methods for the treatment of mitral regurgitation, but such surgical operations require the support of extracorporeal circulation technology, which is more traumatic to patients. [0003] In recent years, the technology of transcatheter mitral valve repair has developed rapidly. Among them, transcatheter annuloplasty is a relatively effective interventional treatment method. Thereby improving mitral valve regurgitation. In the prior...

AI Technical Summary

Problems solved by technology

Direct mitral valvuloplasty and artificial valve replacement are effective methods for the treatment of mitral valve insufficiency, but such surgical operations require the support of extracorporeal circulation technology, which is more traumatic to patients

In the prior art, multiple anchors pre-threaded with sutures are anchored on the heart valve annulus along the circumference of the valve annulus, and then the purpose of reducing the valve annulus is achieved by adjusting and tightening the sutures. A special locking device is introduced to lock the tightened suture, which makes the number of instruments required to complete the shrinkage ring larger, the operation steps more cumbersome, and the operation time is longer

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