Degradable occluder device

By designing a biodegradable occluder device, using biodegradable materials and locking moving parts and marking rings with limiting cooperation, the problems of tissue damage and foreign body residue during the operation of the occluder device are solved. This achieves tight fit and complete degradation of the occluder, improving surgical efficacy and safety.

WO2026025480A1 Publication Date: 2026-02-05FUWAI HOSPITAL CHINESE ACAD OF MEDICAL SCI & PEKING UNION MEDICAL COLLEGE
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Patent Information

Application Number
PCT/CN2024/109448
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-08-02
Publication Date
2026-02-05

AI Technical Summary

Technical Problem

Existing occlusion devices are prone to damaging tissues during operation, have insufficient adhesion, and are prone to leaving foreign objects. In addition, most of them are made of metal, which poses safety hazards.

Method used

A biodegradable occlusion device was designed, which uses biodegradable materials to make the occlusion mechanism. It combines a locking moving part with a limiting fit and a marking ring to prevent the locking moving part from penetrating the damaged tissue. The marking ring drives the occlusion mechanism to fully fit the defect site, while achieving the biodegradability of the occlusion device to avoid residue.

Benefits of technology

It improves the effectiveness of surgical closure, avoids tissue damage and foreign body residue, enhances the effectiveness of closure, and reduces complications through complete degradation.

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Abstract

A degradable occluder device, relating to the technical field of medical instruments, comprising: a conveying and wire cutting mechanism, provided with a handle, a connecting rod, and a locking part, wherein the handle is used for being operated and held in vitro, two ends of the connecting rod are respectively connected to the handle and the locking part, an inner cavity of the connecting rod can allow the insertion of a molding auxiliary wire and a connecting wire, the locking part can lock and release an occluder mechanism, a movable locking member is provided inside the locking part, a wire cutting block in limiting fit with the movable locking member is arranged on the movable locking member, sliding of the wire cutting block can achieve wire cutting, a marker ring is formed at one end of the locking part proximal to the occluder mechanism, and movement of the movable locking member can drive the marker ring to move; the occluder mechanism, connected to the locking part by means of the molding auxiliary wire and the connecting wire, used for occluding a cardiac defect site, wherein a mesh body of the occluder mechanism is made of a degradable material; a wire retrieval mechanism, connected to one end of the molding auxiliary wire; and a loader, mounted outside the connecting rod, wherein the occluder mechanism can be mounted inside the loader for pushing.
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