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A MEMS-based passive hydrocephalus shunt with adaptive flow characteristics
KTH, School of Electrical Engineering (EES), Micro and Nanosystems.
Umeå University. (Dept. of 2 Radiation Sciences)
Umeå University. (Clinical Neuroscience)
KTH, School of Electrical Engineering (EES), Micro and Nanosystems.ORCID iD: 0000-0001-9552-4234
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2013 (English)Conference paper (Refereed)
Abstract [en]

This paper reports a novel MEMS valve with adaptive flow characteristics for improved treatment of hydrocephalus, a disease that is characterized by elevated pressure in the cerebrospinal fluid (CSF) that surrounds the brain and spinal cord. In contrast to conventional valves with two ports, the valve presented here features a third port, called compensation port, which utilizes hydrostatic pressure to adapt CSF drainage based on body position. A prototype has been fabricated using standard MEMS manufacturing processes and the experimental evaluation successfully showed that the flow rate was adjustable with a varying hydrostatic pressure on the compensation port. Extracted data shows that flow rate was at near ideal values at both standing and laying body position showing an effective adaptation to body position. This is the first passive hydrocephalus valve intended for body position dependent CSF pressure regulation.

Place, publisher, year, edition, pages
IEEE conference proceedings, 2013. -1674 p.
Keyword [en]
MEMS, hydrocephalus, hydrocephalus shunt, micro fluidic valve, normal pressure, passive pressure balancing
National Category
Medical Biotechnology Other Electrical Engineering, Electronic Engineering, Information Engineering
URN: urn:nbn:se:kth:diva-133222DOI: 10.1109/Transducers.2013.6627106ScopusID: 2-s2.0-84891682479ISBN: 978-146735981-8OAI: diva2:660269
Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS & EUROSENSORS XXVII), Barcelona, 2013

QC 20140204

Available from: 2013-10-29 Created: 2013-10-29 Last updated: 2014-02-04Bibliographically approved

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Johansson, StaffanStemme, GöranRoxhed, Niclas
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