A lancing device comprising a movable parallelogram-shaped rack. The rack rotates a linearly fixed pinion which drives a slider-crank system. The slider-crank system in turn drives a lance holder. The parallelogram-shaped rack defines one or more predetermined paths along which the pinion moves. The...http://www.google.com.au/patents/US7691117?utm_source=gb-gplus-sharePatent US7691117 - Lancing device
