A lancet device (10) having an internal magnet (20) and the forces emanating therefrom driving and retracting a collar (30) and a lancet (60). The device has a steady state condition (SS) wherein the device is at rest and in equilibrium. The device can be armed and activated to puncture. Once puncturing...http://www.google.es/patents/US20050125019?utm_source=gb-gplus-sharePatente US20050125019 - Lancet device and method
