| abstract |
Provided are a puncture device, a puncture device with a biosensor, and a biosensor measurement device which can be easily measured with a simple structure. A puncture device (1) includes a holder part (3) having a mounting chamber (37) in which a biosensor chip (11) is mounted, a suction cup part (5) provided on one surface of the holder part (3) and in close contact with a subject, a holder The puncture device N in the variable volume cavity 41 that is provided on the other surface of the unit 3 and communicates with the mounting chamber 37 is moved in a direction perpendicular to the surface of the biosensor chip 11 and penetrates the mounting chamber 37 to suck the suction unit A puncture portion 7 that protrudes from 5, and a backflow prevention valve 9 that is provided in the holder portion 3 and prevents outside air inflow due to negative pressure in the mounting chamber 37, while allowing internal air outflow due to positive pressure in the mounting chamber 37; Is provided. [Selection] Figure 1 |