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

Medicine and Health

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

R. M. Nambisan, S. R. Green, et al.

This innovative study by Ramprasad M. Nambisan, Scott R. Green, Richard S. Kwon, Grace H. Elta, and Yogesh B. Gianchandani presents a groundbreaking wireless sensing system for monitoring biliary stents. Utilizing a magnetoelastic microsensor, the team successfully captured real-time data on sludge accumulation, achieving remarkable results in an in vivo swine model. Experience the future of medical technology with this first-of-its-kind wireless sensor.

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Playback language: English
Abstract
This paper investigates a wireless sensing system for monitoring the patency of biliary stents. A magnetoelastic microsensor integrated into the stent detects sludge accumulation via changes in resonant frequency and quality factor. The system addresses challenges in sensor miniaturization, wireless range, signal feedthrough, and clinical use. In vivo experiments in a swine model demonstrated a signal-to-noise ratio of ~10⁶ at a range of 17 cm, representing the first reported signals from a passively wireless magnetoelastic sensor implanted in a live animal.
Publisher
Microsystems & Nanoengineering
Published On
Authors
Ramprasad M. Nambisan, Scott R. Green, Richard S. Kwon, Grace H. Elta, Yogesh B. Gianchandani
Tags
wireless sensing
biliary stents
magnetoelastic microsensor
signal-to-noise ratio
in vivo experiments
sludge accumulation
resonant frequency

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