Miniaturized Passive Bio-mechanical Valve for Hydrocephalus Treatment

Yuna Jung, Daniel Gulick, Jennifer Blain Christen

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


Hydrocephalus is an accumulation of excess pressure in the brain due to malfunction of the fluid drainage system, arachnoid granulations. Standard treatment uses a shunt to drain excess cerebrospinal fluid to the abdomen. Conventional shunts suffer high failure rates over time. To reduce failure, we propose replacing the shunt with a miniaturized valve placed in the intracranial space. Our current prototype uses a duckbill valve design with 1 mm outlet width. The valve leaflets are silicone (PDMS), with the fluid channel defined using photolithography. In bench top pressure vs. flow testing, the silicone duckbill valve achieved the target cracking pressure range of 5 to 15 cmH2O with no cycling degradation or reverse flow leakage. Upcoming studies will monitor long-term degradation and test valve performance in vivo.

Original languageEnglish (US)
Title of host publication2022 IEEE Sensors, SENSORS 2022 - Conference Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781665484640
StatePublished - 2022
Externally publishedYes
Event2022 IEEE Sensors Conference, SENSORS 2022 - Dallas, United States
Duration: Oct 30 2022Nov 2 2022

Publication series

NameProceedings of IEEE Sensors
ISSN (Print)1930-0395
ISSN (Electronic)2168-9229


Conference2022 IEEE Sensors Conference, SENSORS 2022
Country/TerritoryUnited States


  • Miniaturization
  • implantable valve
  • pressure-flow measurement

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


Dive into the research topics of 'Miniaturized Passive Bio-mechanical Valve for Hydrocephalus Treatment'. Together they form a unique fingerprint.

Cite this