Patent ID: 8288151

Claim:
A biochemical reaction cassette comprising a substrate having a planar surface and a casing having a recess, the substrate and the casing being bonded to each other such that the planar surface and the recess face each other to form a flow channel having a cross section perpendicular to a flow direction in the flow channel as a space between the substrate and the casing, the flow channel including a reaction chamber for reacting therein a target nucleic acid with a probe for detecting the target nucleic acid, an injection port for injecting a specimen potentially containing the target nucleic acid into the reaction chamber and a discharge port for discharging the specimen from the reaction chamber, the flow channel further including a buffer room provided between the injection port and the reaction chamber and a fluid resisting section provided as a projection member formed between the buffer room and the reaction chamber in the recess, the fluid resisting section exhibiting a higher flow resistance as compared with any of the reaction chamber and the buffer room, the fluid resisting section being provided on both the upstream and downstream sides of the reaction chamber.