| 摘要 |
The invention relates to a device for drawing a sample and analyzing body fluids, and to a corresponding method. The device comprises a handle ( 1 ), which accommodates a pneumatic drive device, and a sensor unit ( 2 ) that contains a microneedle ( 3 ) on an elastic membrane ( 4 ) and at least one sensor system ( 5 ). The handle ( 1 ) and the sensor unit are detachably connected to one another, and the pneumatic drive device interacts with the sensor unit ( 2 ) in such a manner that the drive device exerts pressure onto the elastic membrane ( 4 ) so that the microneedle ( 3 ) pierces the surface of the skin in order to draw body fluid. During the ensuing decreasing pressure, the elastic membrane ( 4 ) returns to its original shape, and body fluid is suctioned, due to the resulting underpressure, from the location of piercing and into the interior of the sensor unit ( 2 ) to the at least one sensor system ( 5 ). Particularly advantageous is the integration of a measuring unit ( 10 ), which determines concentration values resulting from the physical or chemical property changes arising on the sensor system ( 5 ). A display ( 12 ) can serve to display the measured values.
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