UP-link: An ultra-low power implantable wireless system for long-term ambulatory urodynamics

Woo Suk Lee, Albert Kim, Babak Ziaie, Vijay Raghunathan, Charles R. Powell

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Scopus citations

Abstract

Monitoring of bladder pressure, known as cystometry, is a key diagnostic tool in urodynamic studies of patients that exhibit lower urinary tract symptoms. Over the past few years, there has been an increased interest in ambulatory urodynamics due to the increased convenience and more realistic monitoring environment. This paper presents an ultra-low power implantable wireless platform, UP-Link, for long-term ambulatory bladder pressure monitoring. The proposed platform, which is built using off-the-shelf components and uses the MICS (Medical Implant Communication Service) radio frequency band for communication, enables more cost-effective and rapid development compared to existing ASIC-based solutions. The UP-Link platform is powered by two coin cell batteries with a total capacity of 560mAh and has an estimated battery life of several months to years. Results obtained through in vitro experiments demonstrate that the pressure data measured using UP-Link shows excellent agreement (0.995 using the intraclass correlation coefficient method) with measurements obtained using a commercial pressure gauge. An accelerated battery-life test was also performed, the results of which validate our lifetime estimates. The longevity of the UP-Link platform enables ambulatory urodynamic studies at much longer time scales than current practice.

Original languageEnglish (US)
Title of host publicationIEEE 2014 Biomedical Circuits and Systems Conference, BioCAS 2014 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages384-387
Number of pages4
ISBN (Electronic)9781479923465
DOIs
StatePublished - Dec 9 2014
Event10th IEEE Biomedical Circuits and Systems Conference, BioCAS 2014 - Lausanne, Switzerland
Duration: Oct 22 2014Oct 24 2014

Publication series

NameIEEE 2014 Biomedical Circuits and Systems Conference, BioCAS 2014 - Proceedings

Other

Other10th IEEE Biomedical Circuits and Systems Conference, BioCAS 2014
CountrySwitzerland
CityLausanne
Period10/22/1410/24/14

ASJC Scopus subject areas

  • Hardware and Architecture
  • Biomedical Engineering

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    Lee, W. S., Kim, A., Ziaie, B., Raghunathan, V., & Powell, C. R. (2014). UP-link: An ultra-low power implantable wireless system for long-term ambulatory urodynamics. In IEEE 2014 Biomedical Circuits and Systems Conference, BioCAS 2014 - Proceedings (pp. 384-387). [6981743] (IEEE 2014 Biomedical Circuits and Systems Conference, BioCAS 2014 - Proceedings). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/BioCAS.2014.6981743