Electrically opened micro fluid valve
First Claim
1. An electrically openable microfluidic valve, characterized in that it comprises:
- at least one plane support;
at least one afferent microchannel;
at least one efferent microchannel;
said microchannels being provided in the support, so that at least one of their ends and opens onto the internal face of said support, near one another;
at least one deposit of a heat-sensitive material laid out on the internal face of the support; and
at least one heating means;
so that the deposit of heat-sensitive material at least partly closes off the space separating the ends and of the microchannels and, thus preventing the latter from communicating with one another;
the increase in temperature by the heating means resulting in a modification of the structure of the heat-sensitive material, thus at least partially clearing the ends of the microchannels and the space between the latter, so as to allow communication between said microchannels and to restore flow of the fluid.
1 Assignment
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Accused Products
Abstract
The invention relates to an electrically-opened micro fluid-valve. The inventive valve comprises: at least one planar support (12); at least one afferent microchannel (14); at least one efferent microchannel (16), said microchannels being arranged in the support (12); such that at least one of the ends (141 and 161) thereof touch the inner face (121) of the support close to one another; at least one deposit (18) of a heat-sensitive material which is disposed on the inner face (121) of the support (12); and at least one heating means (20). According to the invention, the aforementioned deposit (18) of heat-sensitive material at least partially seals the space separating the ends (141 and 161) of the microchannels (14 and 16), thereby preventing same from intercommunicating. When the temperature of the above-mentioned heating means (20) is raised, the structure of the heat-sensitive material is altered, thereby at least partially opening the ends of the microchannels an the space therebetween, in order to enable communication between said microchannels and to restore the flow of the fluid.
68 Citations
22 Claims
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1. An electrically openable microfluidic valve, characterized in that it comprises:
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at least one plane support; at least one afferent microchannel; at least one efferent microchannel; said microchannels being provided in the support, so that at least one of their ends and opens onto the internal face of said support, near one another; at least one deposit of a heat-sensitive material laid out on the internal face of the support; and at least one heating means; so that the deposit of heat-sensitive material at least partly closes off the space separating the ends and of the microchannels and, thus preventing the latter from communicating with one another; the increase in temperature by the heating means resulting in a modification of the structure of the heat-sensitive material, thus at least partially clearing the ends of the microchannels and the space between the latter, so as to allow communication between said microchannels and to restore flow of the fluid. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification