A valve prosthesis for treating a tricuspid valve

By designing a combined structure of braided rings and artificial leaflets, the problem of valve prostheses being difficult to fit tightly against the autologous valve annulus after implantation was solved, thus avoiding paravalvular leakage and thrombosis and improving sealing and safety.

CN117179965BActive Publication Date: 2026-06-23NINGBO JENSCARE BIOTECHNOLOGY CO LTD
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Patent Information

Application Number
CN202210621379.2
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-06-01
Publication Date
2026-06-23
Estimated Expiration
2042-06-01

AI Technical Summary

Technical Problem

In existing technologies, valve prostheses are difficult to fit snugly against the patient's own valve annulus after implantation, leading to paravalvular leakage and intraventricular blood pooling, which can easily cause thrombosis.

Method used

Design a valve prosthesis comprising a braided ring and artificial leaflets. The braided ring consists of a ventricular portion, a valve annulus portion, and an atrial portion. It is designed with a close-fitting structure to fit snugly against the autologous valve annulus, and has a notch at the edge of the atrial portion to allow blood to flow out quickly and avoid stagnation.

Benefits of technology

It effectively avoids paravalvular leakage and thrombosis, ensures that the braided ring fits tightly to the autologous valve ring, prevents blood reflux and stasis, and improves the sealing and safety after implantation.

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Abstract

The application belongs to the field of medical devices, and particularly relates to a valve prosthesis for treating a tricuspid valve, comprising a stent and artificial valve leaflets, wherein the stent comprises a braided ring and a valve sewing segment, the braided ring is connected with the valve sewing segment, the braided ring comprises a ventricular part, an annulus part and an atrial part, the atrial part comprises a septal annulus segment, an anterior annulus segment and a posterior annulus segment, the anterior annulus segment and the posterior annulus segment are both provided with close-fitting structures, the close-fitting structures enable the edges of the anterior annulus segment and the posterior annulus segment to be pressed towards the proximal end direction, the edges of the anterior annulus segment and the posterior annulus segment are in a wavy shape, the edges of the middle region of the anterior annulus segment and the middle region of the posterior annulus segment are at wave trough positions, the edges of the end of the anterior annulus segment and the end of the posterior annulus segment are at wave crest positions, and when the native valve is opened and closed, the edge height of the middle region of the anterior annulus segment and the edge height of the middle region of the posterior annulus segment are always lower than the edge height of the end of the anterior annulus segment and the edge height of the end of the posterior annulus segment.
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