Patent ID: 8636758
Filing Date: 2014-01-28
Classification: A61B

Abstract:
1. System for withdrawing body fluid comprising a drive unit having a plunger which is moved from a resting position into a lancing position in order to carry out a lancing process and a lancing unit containing a lancet with a needle which in the resting position of the plunger is arranged within the lancing unit and is displaced by the plunger when it moves into the lancing position in such a manner that the needle at least partially emerges through an exit opening in the lancing unit, wherein the plunger and lancet are coupled together by a form fit in order to carry out a lancing process and the plunger has a holding area which can be held in a form-fitting manner by a holding device on the lancet or the lancet has a holding area which can be held in a form-fitting manner by a holding device on the plunger, wherein the holding device is firstly opened and closes around the holding area by means of a longitudinal movement wherein at least one holding element of the holding device moves transversely to the longitudinal direction, wherein the plunger and the lancet are decoupled with the holding device open when the plunger is at the resting position, wherein the at least one holding element is configured to move in a transverse direction to couple the plunger and the lancet when the plunger moves longitudinally from the resting position to the lancing position.