Title:
マイクロ流体デバイス用の弁
Document Type and Number:
Japanese Patent JP2008502462
Kind Code:
A
Abstract:
A valve for controlling fluid flow in a microfluidic device is provided. The valve comprises a chamber ( 26 ) formed on a substrate ( 24 ), a heating coil ( 42 ), and a valve material ( 30 ) contained in the chamber ( 26 ). When the valve is to be closed, the heating coil is activated causing the valve material to expand out of the chamber, through a neck portion ( 28 ), and into the main channel ( 22 ), blocking it. Preferably, the valve material is paraffin wax, and is caused to melt by the heating coil ( 42 ). On melting the melted paraffin wax flows into the main channel whereupon it cools and solidifies. A restriction ( 34 ), with collar ( 36 ) provides a cool surface on which the solidifying wax accumulates.
Inventors:
Allen, Brian Philip
Gilbert, richard
Zhou, Xiao
Gilbert, richard
Zhou, Xiao
Application Number:
JP2007512319A
Publication Date:
January 31, 2008
Filing Date:
May 09, 2005
Export Citation:
Assignee:
E2V Biosensors Limited
International Classes:
B01J19/00; B01L3/00; B81B3/00; F15C5/00; F16K13/10; F16K99/00; G01N35/10; G01N37/00; C12M1/00; C12M1/36
Attorney, Agent or Firm:
Atsushi Aoki
Jun Tsuruta
Tetsuro Shimada
Shinozaki Masami
Jun Tsuruta
Tetsuro Shimada
Shinozaki Masami