Patent ID: 8075496

Claim:
A device for acquiring and analyzing a sample fluid, comprising: a housing having an opening; a lancet having a lancet body movably disposed in the housing; a drive unit configured to propel the lancet body such that the tip of the lancet can at least partially protrude from the opening to perform a lancing process, the drive unit comprising: a motor configured for contact with an electrical energy store; a mechanical energy store coupled to the motor such that the electrical energy stored by the electrical energy store can be converted into mechanical energy and at least partially stored by the mechanical energy store; and a coupling mechanism which couples the lancet body to the mechanical energy store, wherein the stored energy of the mechanical energy store can be at least partially transferred to the lancet body, the coupling mechanism comprising a mechanical motion converter which diverts the energy of the mechanical energy store onto the lancet body to move the lancet in a positively guided movement, the mechanical motion converter comprising a control guide block which is configured to guide the movement of the lancet; and the motor being coupled to a functional component which is independent of the mechanical energy store, wherein the energy from the motor is configured to be diverted to the mechanical energy store and the functional component.