| abstract |
(57) [Abstract] [PROBLEMS] To provide a biosensor that enables easy measurement operation and enables reliable component concentration measurement. SOLUTION: A compression coil spring 13A is provided in a sensor body 3. The sensor unit 2 is inserted through the switch mechanism 14 The sensor unit 2 is locked by the The main body cover 4 is mounted with the unit sensor 2 inserted therein. Therefore, the switch mechanism 1 4 prevents the sensor unit 2 from being fired. A blood introduction path 5C is formed in the needle 5 of the sensor unit 2, and the blood introduction path 5C is electrically connected to the space inside the slit 10 of the spacer 7. In this space, the counter electrode and the working electrode are arranged so as to face each other. With such a configuration, the needle 5 can be easily operated. The blood introduced from (1) can be brought into contact with the counter electrode and the working electrode at the same time, and the substrate concentration can be reliably measured. |