Robust implantable blood pressure sensor packaging for long-term laboratory animals monitoring

Xing Chen, Darrin Young

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

Abstract

A robust implantable blood pressure sensor packaging technique is demonstrated for long-term laboratory animals monitoring. The packaged sensors achieve a lifetime over 100 days in PBS solution at 37 °C, adequate for the proposed implantable application for life sciences research. The proposed packaging technique employs a multi-layer of Parylene and PDMS coating over a MEMS piezoresistive pressure sensor, thus effectively slowing down the moisture penetration and electrochemical etching of the metal traces on sensor surface or PCB surface under a bias condition. Further analysis of experimental results reveals a strong relationship between lifetime of packaged sensors and bias voltage level, suggesting a design trade-off between system sensitivity and reliability.

Original languageEnglish (US)
Title of host publicationIEEE Sensors, SENSORS 2016 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781479982875
DOIs
StatePublished - Jan 5 2017
Externally publishedYes
Event15th IEEE Sensors Conference, SENSORS 2016 - Orlando, United States
Duration: Oct 30 2016Nov 2 2016

Other

Other15th IEEE Sensors Conference, SENSORS 2016
Country/TerritoryUnited States
CityOrlando
Period10/30/1611/2/16

Keywords

  • blood pressure sensor
  • implantable biomedical devices
  • long-term reliability
  • polymeric packaging

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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