Aortic valve assist prosthesis for preventing backflow

By designing the auxiliary leaf segment of the aortic valve assisted prosthesis to cooperate with the autologous leaflet, the distal placement part adapts to the flap sinus morphology, and the middle section crosses the junction of the autologous leaflets. The support stent provides stability, solving the problems of unstable positioning, large implant influence, and poor adaptability in the prior art, and effectively prevents regurgitation and autologous leaflet protection.

CN114305800BActive Publication Date: 2025-08-05NINGBO JENSCARE BIOTECHNOLOGY CO LTD
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Patent Information

Application Number
CN202111564487.2
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2021-12-20
Publication Date
2025-08-05
Estimated Expiration
2041-12-20

AI Technical Summary

Technical Problem

While preventing regurgitation, existing aortic valve stents are difficult to accurately locate and unstable anchoring. The implant has a great impact on the autologous valve leaves and cannot adapt to the physiological structural differences of the valve annulus.

Method used

Aortic valve assisted prosthesis is designed, including the main body and three auxiliary leaflet segments. The auxiliary leaflet segment cooperates with the autologous leaflet free segment to achieve closure by covering and adhering to the autologous leaflet segment. The distal placement is adapted to the flap sinus morphology, and the middle section crosses the junction of the autologous leaflet, and the support stent provides stability.

Benefits of technology

Effectively prevent regurgitation, reduce the impact of the implant on the autologous leaflets, adapt to different flap sinus sizes, improve anchoring force, protect the autologous leaflets from damage, and do not change their morphology.

✦ Generated by Eureka AI based on patent content.
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Abstract

The present application relates to the field of medical devices, and specifically to an aortic valve auxiliary prosthesis for preventing regurgitation, comprising: a main body, which is configured to remain in place in the aorta at the surgical site; and three auxiliary leaflet segments configured to cooperate with the three free segments of the native leaflets of the aortic valve; the three auxiliary leaflet segments are fixed to the main body. The present invention allows the original native leaflets to be retained, and when the native valve is closed, the purpose of improving the prevention of regurgitation is achieved by overlapping and covering the free segments of the native valve, with significant therapeutic effects and stronger targeting. Since the native valve is retained, most of the impact force of blood when flowing is still on the native valve, the reliability requirements for the fixed positioning of the main body are low, and the morphological changes to the native valve are smaller.
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