A review of microvalves

KW Oh, CH Ahn - Journal of micromechanics and …, 2006 - iopscience.iop.org
This review gives a brief overview of microvalves, and focuses on the actuation mechanisms
and their applications. One of the stumbling blocks for successful miniaturization and …

Characterization of polydimethylsiloxane (PDMS) properties for biomedical micro/nanosystems

A Mata, AJ Fleischman, S Roy - Biomedical microdevices, 2005 - Springer
Abstract Polydimethylsiloxane (PDMS Sylgard® 184, Dow Corning Corporation) pre-
polymer was combined with increasing amounts of cross-linker (5.7, 10.0, 14.3, 21.4, and …

[HTML][HTML] New and improved ways to treat hydrocephalus: pursuit of a smart shunt

BR Lutz, P Venkataraman, SR Browd - Surgical neurology …, 2013 - ncbi.nlm.nih.gov
The most common treatment for hydrocephalus is placement of a cerebrospinal fluid shunt to
supplement or replace lost drainage capacity. Shunts are life-saving devices but are …

Micro-valve using induced-charge electrokinetic motion of Janus particle

Y Daghighi, D Li - Lab on a Chip, 2011 - pubs.rsc.org
A new micro-valve using the electrokinetic motion of a Janus particle is introduced in this
paper. A Janus particle with a conducting hemisphere and a non-conducting hemisphere is …

Design and Fabrication of a PDMS/Parylene Microvalve for the Treatment of Hydrocephalus

J Oh, G Kim, F Kralick, H Noh - Journal of …, 2011 - ieeexplore.ieee.org
We present a novel microvalve for the treatment of a pathological condition, ie,
hydrocephalus. This microvalve is made of polydimethylsiloxane/Parylene composite layer …

Microfabricaton of microfluidic check valves using comb-shaped moving plug for suppression of backflow in microchannel

J Hyeon, H So - Biomedical Microdevices, 2019 - Springer
This study reports on an efficient microscale one-way valve system that combines the
physical properties of photopolymerized microstructures and viscoelastic microchannels to …

Cerebrospinal fluid volume measurements in hydrocephalic rats

S Basati, B Desai, A Alaraj, F Charbel… - Journal of Neurosurgery …, 2012 - thejns.org
Object Experimental data about the evolution of intracranial volume and pressure in cases of
hydrocephalus are limited due to the lack of available monitoring techniques. In this study …

Hydrodynamic properties of the Certas hydrocephalus shunt

Z Czosnyka, JD Pickard, M Czosnyka - Journal of Neurosurgery …, 2013 - thejns.org
Object Independent testing of hydrocephalus shunts provides information about the quality
of CSF drainage after shunt implantation. Moreover, hydrodynamic parameters of a valve …

PDMS selective bonding for the fabrication of biocompatible all polymer NC microvalves

A Jahanshahi, P Salvo… - Journal of …, 2013 - ieeexplore.ieee.org
Microvalves are commonly used in microfluidic systems to control precisely the liquid flow. In
this paper, the design and fabrication of a normally-closed (NC) all-polymer membrane-type …

Hydrogel Check-Valves for the Treatment of Hydrocephalic Fluid Retention with Wireless Fully-Passive Sensor for the Intracranial Pressure Measurement

S Lee, S Liu, RE Bristol, MC Preul, J Blain Christen - Gels, 2022 - mdpi.com
Hydrocephalus (HCP) is a neurological disease resulting from the disruption of the
cerebrospinal fluid (CSF) drainage mechanism in the brain. Reliable draining of CSF is …