A lancing device, an embodiment of which controls the advancement and retraction of a lancet by monitoring the position of the lancet in conjunction with a lancet controller which incorporates a feedback loop for modulating the lancet driver to follow a predetermined tissue lancing profile....http://www.google.de/patents/US7316700?utm_source=gb-gplus-sharePatent US7316700 - Self optimizing lancing device with adaptation means to temporal variations in cutaneous properties
