Heart valve replacement prosthesis and locking and fastening cardiac apex pad thereof

Abstract

The invention discloses a locking and fastening cardiac apex pad of a heart valve replacement prosthesis, and belongs to the field of medical instruments. The cardiac apex pad comprises a plugging disc body with a center through hole and a limiting locking nail with a center hole, the center through hole of the disc body is of a long oval structure, guide grooves are formed in the two long-distance inner walls of the center through hole, limiting grooves are formed in the two short-distance inner walls of the center through hole, the limiting locking nail comprises a nail head and a nail rod, the nail rod is composed of two oppositely-arranged arc-shaped rods, and the arc-shaped rods are arranged in the center through hole. Locking protrusions are arranged on the outer side walls of the arc-shaped rods, when the limiting locking nails rotate under the action of external force, the bottom ends of the arc-shaped rods are squeezed inwards and tightened till the locking protrusions are clamped with the limiting grooves, and clamping and fastening of the tether are completed. Through the arrangement of the oblong structure and the limiting locking nail, lossless extrusion and fastening of the locking nail on the tether are achieved, and the device is simple, convenient and higher in safety. Knotting and fixing of the tail end of the tether are achieved through the fixing pile, the short-term and long-term using effect is guaranteed, complications can be prevented, and operation is easier and more convenient.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a heart valve replacement prosthesis and apical pad for locking and fastening thereof. Background technique [0002] Heart valve diseases in the human body are increasingly affecting people's health, with a high fatality rate, but currently there is no specific drug for treatment. At present, the best internationally recognized solution is surgical treatment, among which, transapical valve repair or replacement surgery has gradually become a surgical method 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 the hole, and 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 ...

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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