Biosensor
First Claim
1. A biosensor being provided with a suction cavity which sucks a certain amount of sample by means of capillary phenomenon, said biosensor comprising a flow channel to connect said suction cavity and an analytical cavity furnished with a reagent, wherein, said flow channel has a narrowed section provided with a gap formed by narrowing a flow passage area, and said narrowed section retains said sample in said suction cavity when the sample is sucked into said suction cavity, and allows the sample accumulated in said suction cavity to circulate into said analytical cavity through said gap, when a centrifugal force is applied from the outside.
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Accused Products
Abstract
The present invention is directed to a biosensor being provided with a suction cavity which sucks a certain amount of sample by means of capillary phenomenon, the biosensor including a flow channel to connect the suction cavity and an analytical cavity furnished with a reagent, wherein, the flow channel has a narrowed section provided with a gap formed by narrowing a flow passage area. The narrowed section has a function to retain the sample in the suction cavity when the sample is sucked therein, and a function to circulate the sample retained in the suction cavity into the analytical cavity through the gap, when a centrifugal force is applied from the outside. The two functions held by the narrowed section enables a simple collection of blood sample, and further enables a simple transfer of the blood sample to the analytical area by applying the centrifugal force to the blood sample, as well as facilitating a component extraction.
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Citations
20 Claims
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1. A biosensor being provided with a suction cavity which sucks a certain amount of sample by means of capillary phenomenon, said biosensor comprising a flow channel to connect said suction cavity and an analytical cavity furnished with a reagent, wherein,
said flow channel has a narrowed section provided with a gap formed by narrowing a flow passage area, and said narrowed section retains said sample in said suction cavity when the sample is sucked into said suction cavity, and allows the sample accumulated in said suction cavity to circulate into said analytical cavity through said gap, when a centrifugal force is applied from the outside.
Specification