A venous valve prosthesis
By designing a venous valve prosthesis and utilizing the switching mechanism between the stent and the valve, the problem of blood reflux in chronic venous insufficiency was solved, enabling unidirectional venous blood flow, improving symptoms, and reducing venous pressure.
CN116807683BActive Publication Date: 2026-05-29SHANGHAI BLUEVASCULAR MEDTECH CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHANGHAI BLUEVASCULAR MEDTECH CO LTD
- Filing Date
- 2022-03-22
- Publication Date
- 2026-05-29
AI Technical Summary
Technical Problem
Chronic venous insufficiency leads to poor venous blood return and excessively high venous pressure, causing a series of symptoms and signs. Current technology lacks effective venous valve prostheses to prevent blood backflow.
Method used
A venous valve prosthesis is designed, comprising a stent and a valve. The stent extends axially through the lumen, and the valve has first and second positions that can switch positions when the direction of blood flow changes, allowing or blocking blood flow to replace diseased venous valves.
Benefits of technology
It effectively prevents blood backflow, improves or eliminates symptoms caused by chronic venous insufficiency, reduces venous pressure, prevents varicose veins and ulcers, and reduces autologous thrombosis.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN116807683B_ABST
Abstract
The present application provides a venous valve prosthesis, comprising a stent body and a valve; the stent body has an inner cavity, and the stent body comprises a proximal positioning part, a supporting part and a distal positioning part; the valve is connected to at least the supporting part and divides the inner cavity into a first segment and a second segment arranged from the proximal end to the distal end; the valve has a first position and a second position; the venous valve prosthesis is used for implanting into a target lumen for the target liquid to flow through; when the valve is subjected to a pressure from the target liquid pointing from the distal end to the proximal end, the valve is in the first position, so as to make the first segment and the second segment communicate to allow the target liquid to flow from the second segment into the first segment; when the valve is subjected to a pressure from the target liquid pointing from the proximal end to the second segment, the valve is in the second position, so as to make the first segment and the second segment isolated to prevent the target liquid from flowing from the first segment into the second segment. The venous valve prosthesis can be implanted into a venous vessel and replace a diseased venous valve, thereby preventing blood reflux.
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