Take-up system

Abstract

The invention provides a take-up system. The take-up system comprises a take-up device, a conveying device and an operating handle. The take-up device comprises a winding shaft, and the winding shaft is used for winding the flexible long and thin piece. The conveying device comprises a connecting rod and a connecting pipe which are movably sleeved. The operating handle comprises a driving assembly, the driving assembly comprises a first rotating part and a second rotating part which are movably sleeved, the near end of the connecting pipe and the first rotating part are connected for synchronous movement, and the near end of the connecting rod and the second rotating part are connected for synchronous movement; wherein the take-up system has a first state and a second state, in the first state, the first rotating part and the second rotating part relatively stop rotating, in the second state, the first rotating part and the second rotating part can relatively rotate, and the second rotating part moves in the axial direction relative to the first rotating part so that the take-up system can be converted into the second state from the first state. When the take-up system is in the first state, in the process of driving the winding shaft to wind the flexible slender piece, the winding shaft, the connecting pipe and the connecting rod rotate synchronously.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to a wire take-up system. Background technique [0002] Mitral regurgitation (abbreviation: MR) is a heart valve disease that causes blood to flow back from the left ventricle to the left atrium due to insufficiency of the mitral valve. Currently, mitral valve annulus is often reduced in size by mitral annuloplasty to reduce mitral regurgitation. For example, several anchors connected in series by flexible elongated members can be implanted on the mitral valve annulus, and then the redundant flexible elongated members can be tightened by a wire take-up device to shorten the distance between adjacent anchors. The wire device remains in the human body along with the anchor and the flexible elongated member, so as to realize the shrinking of the mitral valve annulus to treat mitral valve regurgitation. [0003] In the prior art, the wire take-up device is connecte...

AI Technical Summary

Problems solved by technology

However, in the process of tightening up the flexible slender member by the wire take-up device, there is a risk that the threaded connection between the wire take-up device and the conveying device will be released in advance, which will lead to poor shrinkage effect

In addition, there is a risk that the threaded connection between the take-up device and the delivery device will become tighter and tighter, which will make it difficult to detach the connection between the take-up device and the delivery device, and the operation risk is high

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