Patent ID: 7699807

Claim:
A device for automatically retracting a needle used to introduce a cannula of a subcutaneous infusion device into a subcutaneous layer of skin of a patient, the device comprising: a housing defining an internal cavity; a needle hub coupled to the housing and including a needle, the needle being coupled to a cannula of a subcutaneous infusion device, and the needle hub including barbs coupling the needle hub to the housing; a spring configured to move the needle into a retracted state; and a trigger member including projections; wherein, upon full introduction of the needle and associated cannula of the subcutaneous infusion device into a subcutaneous layer of skin of a patient, the projections come in contact with the barbs of the needle hub and force the barbs to release the needle hub from the housing, and the spring automatically moves the needle hub and associated needle into the internal cavity of the housing into the retracted state while leaving the cannula of the subcutaneous infusion device in the subcutaneous layer of skin of the patient.