Patent ID: 7927290
Filing Date: 2011-04-19
Classification: A61B

Abstract:
1. A blood test apparatus comprising: a housing; a measuring circuit accommodated in the housing; two or more connectors electrically connected to the measuring circuit; an attaching part formed in one side of the housing; a plunger that moves back and forth in the housing; a lancet, one end of the lancet is held by the plunger so as to allow the one end to be inserted into and removed from the plunger; a blood collection needle attached to the other end of the lancet; a holder that is held by the attaching part so as to allow the holder to be inserted into and removed from the attaching part and that allows the lancet to move inside the holder; and a blood sensor that is attached to one end of the holder and that has two or more connection electrodes, wherein: the lancet, the blood collection needle and the blood sensor are integrated with the holder to constitute a blood sampling cartridge that can be detachably inserted into and removed from the attaching part; two or more connectors are arranged so as to be in contact with the connection electrodes of the blood sensor, contact parts of the two or more connectors that contact with the connection electrodes of the blood sensor are arranged around a specific point and arranged at equiangular intervals centered on the specific point; the specific point is a center of rotation with respect to an axis of an insertion direction for attaching the blood sampling cartridge to the attaching part; one of the two or more connection electrodes includes a reference electrode; and wherein the measuring circuit determines the positions of the two or more connectors relative to the two or more connection electrodes by determining which of the two or more connection electrodes includes the reference electrode and identifying which of the two or more connection electrodes contacts which of the two or more connectors.