Blood withdrawal device for use by patient, has drive unit coupled with piston, which is movable in blood container, and detachable locking device, which prevents movement of piston by drive unit

摘要

The device has a drive unit (4) coupled with a piston (3), which is movable in a blood container (2), where the piston can be moved by the drive unit. A detachable locking device (7) is provided in the container to prevent the movement of the piston by the drive unit. A stopper (62) is provided to limit a stroke of the piston. The stopper can be adjusted by a rotary motion of a dosing unit (6).