Degradable pressure sensing fiber and preparation method and application thereof
By combining biodegradable pressure sensing fibers with LC resonant circuits, the long-term retention and infection risks of existing implantable intravascular pressure sensors have been solved, achieving stable pressure monitoring and wireless early warning, thus meeting the safety and biodegradability requirements of implantable devices.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- FUDAN UNIVERSITY
- Filing Date
- 2026-04-24
- Publication Date
- 2026-07-17
AI Technical Summary
Existing implantable intravascular pressure sensors suffer from problems such as long-term retention, high risk of infection, and poor biomechanical compatibility with vascular tissue, making it difficult to achieve stable pressure monitoring and difficult to gradually degrade after the task is completed.
Using biodegradable pressure sensing fibers, a multi-layer structure consisting of a gold/collagen composite conductive electrode, a polycitrate dielectric layer, and a polycaprolactone encapsulation layer, combined with an LC resonant circuit, is used to achieve wireless passive signal reading. The fibers are embedded in a biodegradable vascular stent for pressure monitoring and gradually degrade after the monitoring period.
It achieves stable and continuous monitoring of intravascular pressure, avoids the risk of infection, ensures the mechanical matching between the sensor and the blood vessel, and is gradually absorbed after the functional period, reducing the safety hazards caused by long-term retention and providing wireless early warning of early pathological conditions.
Smart Images
Figure CN122406535A_ABST