A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
A61B 5/157 (2006.01)
Patent
CA 2576387
The invention relates to a puncturing device for generating a puncturing wound for obtaining a body fluid sample of a human or animal, comprising a puncturing element drive (8) in order to drive a puncturing element (1) that is inserted into the puncturing device (7) in order to perform a puncturing and returning motion, an alternating voltage source (9) designed to apply an alternating voltage signal to an electrode (6) that is integrated into an inserted puncturing element (1), an electrical measuring facility (10) in order to measure a response signal elicited by applying the alternating voltage signal to the electrode (6), and an analytical facility (13) operative to determine an analytical result by analyzing the response signal and to control the puncturing element drive (8) taking into consideration the analytical result. According to the invention, the alternating voltage source (9) is designed such that the alternating voltage signal has a rectangular leading edge, preferably it is a square wave voltage. Moreover, the invention relates to a puncturing element for a puncturing device of this type as well as to a puncturing system.
Grundmann Armin
F. Hoffmann-La Roche Ag
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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