Patent ID: 9028426
Filing Date: 2015-05-12
Classification: A61B

Abstract:
1. A device for withdrawing body fluid, comprising: a lancing element adapted for puncturing the skin of a body part, the lancing element having a lancet tip and a receiving structure for collecting body fluid by capillary action; a lancing drive for moving the lancing element in forward and return movements; wherein, the duration of the return movement is longer than the duration of the forward movement, the return movement comprising a first retraction phase during which the lancing drive is configured to move the lancing element at a maximum retraction speed of more than 0.02 m/s, the first retraction phase followed by a second retraction phase for collecting body fluid into the receiving structure, the second retraction phase beginning with a retraction movement of the lancing element and continuing until the lancet tip exits the skin, the lancing drive being configured to move the lancing element during the second retraction phase for a duration of between 0.3 and 0.8 s and/or a retraction speed of between 0.6 and 2 mm/s.