Heart valve replacement prosthesis and heart tip fastening pad thereof

Abstract

The invention discloses a heart valve replacement prosthesis and a heart tip fastening pad thereof, and belongs to the field of medical instruments. The cardiac apex pad comprises a plugging disc body with a center through hole and a threaded locking nail with a center hole, the center through hole is of a counter bore structure, internal threads matched with external threads of the threaded locking nail are arranged on the inner wall of the counter bore structure, a compressible ring is arranged at the bottom of the counter bore structure, and the compressible ring is connected with the center through hole. When the threaded locking nail is screwed into the central through hole, the compressible ring is extruded, so that the through hole in the center of the compressible ring is shrunk, and the tether penetrating through the central through hole is clamped and fastened. And a fixing pile with a hole for fixing the end part of the tether is arranged on the plugging disc body. According to the invention, the tether is fixed by using friction force and a material cross interlocking method by adopting the principles of thread pressure application and compression ring deformation, lossless extrusion and fastening of the tether are realized, and the device is simple, convenient and higher in safety. Knotting and fixing of the tail end of the tether can be achieved through the fixing pile, the long-term use effect is guaranteed, and safety and stability are high.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a heart valve replacement prosthesis and its fastening apex pad. Background technique [0002] Transapical valve repair or replacement surgery combines the advantages of surgery and interventional procedures, and is gradually recognized by the medical community. In the process of transapical valve repair or replacement, a hole must first be made at the apex of the heart, and then the instruments and products are delivered to the lesion through this hole, and then the repair prosthesis or replacement prosthesis is accurately and firmly fixed, and then all the instruments Withdraw, and finally perform apical suture. 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. O...

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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