A device for inserting a cannula of a subcutaneous infusion device into a subcutaneous layer of skin of a patient. For example, some devices automatically retract a needle used to introduce the cannula of a subcutaneous infusion device into the subcutaneous layer of skin of a patient. The device can...http://www.google.com/patents/US20050101912?utm_source=gb-gplus-sharePatent US20050101912 - Device and method for insertion of a cannula of an infusion device