An artificial vascular arteriovenous fistula monitoring system

Abstract

This invention provides a monitoring system for arteriovenous fistulas (AVFs) in artificial blood vessels, relating to the field of medical monitoring technology. It includes a multimodal data acquisition unit, an adaptive signal processing unit, an early warning feedback module, a reference measurement component, and a passive energy transducer module. The multimodal data acquisition unit comprises a flexible strain sensor encapsulated on the surface of the artificial blood vessel, a pressure-conducting diaphragm positioned at the venous branch of the artificial blood vessel, a thermistor array attached to the skin surface, and a resonant auscultation cavity integrating a miniature microphone. This system achieves 24-hour continuous real-time monitoring, effectively solving the problem of existing technologies relying on manual or intermittent detection. Utilizing the passive energy transducer module, powered by the blood vessel's own pulsation, and combined with the synchronous acquisition by the flexible strain sensor, pressure-conducting diaphragm, thermistor array, and resonant auscultation cavity, continuous monitoring of the AVF status is achieved.

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