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US 2010/0074802 A1Published application
Microvolume liquid dispensing device
OwnerTakashi Yasudainventor
Life of this patent
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Abstract
A microvolume liquid dispensing device capable of automatically dispensing a predetermined volume of a microvolume liquid placed from the outside. Because one surface of a main flow path (13) is gradually varied from a hydrophobic nature to a hydrophilic nature, a microvolume liquid (A) placed in the main flow path (13) can be automatically conveyed. One surface of a side flow path (14) is of a hydrophilic nature, so that a portion of the microvolume liquid (A) can be automatically dispensed to the side flow path (14).
Claims5
A microvolume liquid dispensing device comprising:
- a substrate;
- a cover mounted on one surface of the substrate;
- a main channel formed between the substrate and the cover and extending substantially linearly;
- and
- one or a plurality of side channels formed between the substrate and the cover, branched off from midway of the main channel and extending substantially linearly, wherein
- at least one surface of inner wall surfaces constituting the main channel is composed of a hydrophilic surface and a hydrophobic surface, and a value obtained by dividing an area of the hydrophilic surface by that of the hydrophobic surface is continuously increased from upstream toward downstream thereof, thereby transporting a microvolume liquid;
- and
- at least one surface of inner wall surfaces constituting the side channel is made hydrophilic, and a part of the microvolume liquid is guided to the side channel while the microvolume liquid is being transported in the main channel, thereby sampling a predetermined amount of the microvolume liquid.
5 more elements
Dependencies are inferred from the claim text.