PIERCING SYSTEM FOR REMOVING A BODILY FLUID

摘要

The invention relates to a piercing system for removing bodily fluid from th e skin of a human or animal. Said system comprises a disposable piercing unit (1), which contains a needle element (6) for puncturing the skin, a piercing device (2), which encompasses a piercing drive (4), said drive propelling a piercing displacement of the piercing unit (1), which is coupled to the piercing drive (4) by means of a coupling mechanism (3), a predefined value of the piercing depth being guaranteed using a piercing depth reference element (10), which comprises a skin contact surface (11) and the predefined value o f the piercing depth being determined by the distance in the piercing directio n between the skin contact surface (11) and the position of the needle tip at the inversion point of the piercing displacement. The piercing depth referen ce element (10) is connected to the needle element (6) and coupled to the drive in such a way that it is displaced together with the needle element (1) duri ng at least one part of the propulsion phase and has a defined longitudinal position in the piercing direction in relation to the needle element (6), at least at the inverse point of the piercing displacement.