Pyrotechnically actuated microvalve
AssigneeCommissariat a l'Energie Atomique
InventorGilles Delapierre
Life of this patent
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Abstract
The microvalve comprises a mini-piston moving due to the thrust of gases given off by firing of a pyrotechnic charge and comprising an aperture designed to enable communication to be established between ends of microchannels of a microfluidic component. When the ends between which communication is to be established open out onto a face of a first planar substrate, the mini-piston is formed in a second planar substrate, adjoined to the first, and comprises a part that is mobile in translation or in rotation in the plane of the second substrate. If a transverse slot is arranged between the ends of the microchannels between which communication is to be established, the mini-piston comprises a rod designed to slide in the slot and the aperture is formed by a transverse orifice formed in the rod of the mini-piston.
Claims7
A microvalve for enabling or preventing communication of ends of microchannels of a microfluidic component under a control of a charge of pyrotechnic material, said micro-valve comprising:
- a mini-piston moving due to a thrust of gases given off by firing a pyrotechnic charge and comprising an aperture designed to achieve said communication, wherein
- the microfluidic component microchannels are achieved in a first planar substrate,
- the ends between which communication is to be established open out onto a face of said first planar surface,
- the mini-piston is formed in a second planar substrate designed to be adjoined to the first planar substrate and comprises a mobile part in the plane of the second substrate, and
- the aperture is formed in the mobile part of the mini-piston.
Dependencies are inferred from the claim text.