Positioning support for convenient fixing and safe removal in human blood vessels
By incorporating a biodegradable coating and a spiral portion on the wire stent, combined with a movable connection, the problems of stent displacement and difficulty in removal within blood vessels are solved. Stable positioning and safe removal are achieved, reducing the risk of vascular wall damage and enhancing clinical applicability.
CN121081173BActive Publication Date: 2026-05-05BEIJING HONGHAI MICROTECH CO LTD
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Patent Information
- Application Number
- CN202511544164.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-28
- Publication Date
- 2026-05-05
- Estimated Expiration
- 2045-10-28
AI Technical Summary
Technical Problem
Existing interventional stents are prone to displacement within blood vessels and are difficult to remove safely, especially in cases of high blood flow velocity and high blood pressure, and there is a risk of damage to the blood vessel wall.
Method used
Design a wire stent with a biodegradable coating for positioning thorns. Initially, the thorns penetrate the blood vessel wall to provide fixation. After degradation, they become flexible and deformable, making them easy to remove. Combined with a spiral part and movable connections, stability and safety are ensured.
Benefits of technology
This method achieves stable positioning and safe removal of the stent within the blood vessel, reduces the risk of vascular wall damage, and enhances clinical applicability and safety.
✦ Generated by Eureka AI based on patent content.
Abstract
This invention discloses a positioning stent for convenient fixation and safe removal within human blood vessels, relating to the field of surgical medical device technology. The positioning stent comprises: a metal wire stent with multiple pointed positioning spikes, each spike including an inner metal wire and a covering layer; the inner metal wire is connected to the metal wire of the metal wire stent, the diameter of the inner metal wire being smaller than the diameter of the metal wire of the metal wire stent; the covering layer is conical and made of a biodegradable material; the tips of the inner metal wires and the tips of the covering layer are spaced a predetermined distance apart, and the middle portion of the inner metal wire forms a spiral portion; after the covering layer degrades, the spiral portion changes from a compressed state to an extended state, allowing the inner metal wire to pierce the blood vessel wall, with a predetermined gap between the blood vessel wall surface and the surface of the metal wire stent. This invention achieves reliable stent fixation and safe removal.
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