The invention relates to a pricking device for taking blood for medical tests. Said pricking device comprises a base (1, 2; 23, 22), at least one needle (5; 25) which is disposed therein and of whicha pointed end (5a; 25a) can be deployed, and a manual actuating element (8, 28) for inducing a sliding movement of the needle (5, 25). A control cam section (7, 27) and a torsional spring (10; 30) that engages into the control cam section (7; 27) are arranged in a needle retaining element (4, 24), which at least partly embraces the needle (5; 25), in order to transform a radial movement of ends (10a, 10b; 30a, 30b) of the torsional spring (10, 30) into a forward and/or backward sliding movement (13b, 13c; 33b, 33c) of the needle (5; 25).