Heart valve replacement prosthesis and screw fastening heart tip pad thereof

Abstract

The invention discloses a heart valve replacement prosthesis and a screw fastening heart tip pad thereof, and belongs to the field of medical instruments. The cardiac apex pad comprises a plugging disc body and a threaded fixing needle, the plugging disc body comprises a disc surface and a fixing block arranged on one side portion of the disc surface, the disc surface and the fixing block are provided with center holes which are communicated with each other, the side portion of the fixing block is provided with a threaded hole matched with the threaded fixing needle, and the threaded hole is perpendicular to and communicated with the center hole. And the thread fixing needle penetrates through the central hole to fasten the tether. The threaded fixing needle comprises a needle tip, a needle rod and a threaded needle head, and a plurality of anti-loose grooves are formed in the needle rod. The thread fixing needle is vertically screwed in from the side face of the center hole, and rope fastening simplification is achieved. In addition, the anti-loosening groove is formed in the needle rod, after the fixing needle penetrates through the tying rope, part of fibers of the tying rope are embedded into the anti-loosening groove, reverse pulling force is screwed out for the threaded fixing needle, the good anti-loosening effect is achieved, and the short-term and long-term stabilizing effect of the threaded fixing needle is guaranteed.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a heart valve replacement prosthesis and its screw-fastened apex pad. Background technique [0002] At present, transapical valve repair or replacement surgery is more and more accepted. In this operation, a hole must be made at the apex of the heart, and then instruments and products are delivered to the lesion through this hole, and the repair prosthesis or replacement prosthesis is accurately and firmly fixed. Fix, then withdraw all instruments, and finally perform apical suturing. Under normal circumstances, the apex of the heart is only sutured but not blocked after the operation. Since the heart is beating all the time and the blood pressure in the ventricle is also very high, apical bleeding is a very serious complication after the operation. Once apical bleeding occurs result in the death of the patient. [0003] At present, many well-known medical device manufacturers at...

AI Technical Summary

Problems solved by technology

This structure not only brings severe challenges to production and processing, but also has mechanical weaknesses, which can easily lead to failure during long-term use.

At the same time, due to the size design of the striker inside, the diameter and height of the apex pad will inevitably become larger, resulting in a greater impact on the use effect

[0004] This shows that the apical cushion of above-mentioned existing heart valve replacement prosthesis obviously still has inconvenience and defect in structure, method and use, and urgently needs to be further improved

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