Some embodiments of a medical infusion pump system include a pump device and a removable controller device. When the pump device and the removable controller device are removably attached to one another, the components may provide a portable infusion pump unit to dispense medicine to a user. In particular...http://www.google.com.au/patents/US7887512?utm_source=gb-gplus-sharePatent US7887512 - Operating an infusion pump system
