A microsystem for in vivo wireless monitoring of plastic biliary stents using magnetoelastic sensors.

ABSTRACT: With an interest in monitoring the patency of stents that are used to treat strictures in the bile duct, this paper reports the investigation of a wireless sensing system to interrogate a microsensor integrated into the stent. The microsensor is comprised of a 28-μm-thick magnetoelastic foil with 8.25-mm length and 1-mm width. Magnetic biasing is provided by permanent magnets attached to the foil. These elements are incorporated into a customized 3D polymeric package. The system electromagnetically excites the magnetoelastic resonant sensor and measures the resulting signal. Through shifts in resonant frequency and quality factor, the sensor is intended to provide an early indication of sludge accumulation in the stent. This work focuses on challenges associated with sensor miniaturization

SUBMITTER: Nambisan RM 

PROVIDER: S-EPMC11526028 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature