Device (1a, 1b, 1c, 1d 40) for extracting, storing and/or processing blood or other substances of human or animal origin, and for applying blood compounds or other biological compounds, which comprises a body (2 41) inside which a piston (3 42) is capable of moving longitudinally and is separable at least in part, where the body (2 41) is provided with an internal space (9 51) that may be connected to the outside by means of a conduit (6 50) at a first end (4 48) of the body (2 41), where the body (2 41) and the piston (3 43) may be blocked longitudinally in at least one position to allow the creation of different degrees of vacuum. The device has multiple uses and is extremely versatile.
