An infusion device has a body (12), flexible wings (14) and a needle (16) projecting generally at right angles from one end of the body. A guard is pivoted to the one end of the body (12). On one side, the guard has a channel so that the guard overlies the body in a first position thereof during application of the needle (16) to the patient. The guard is pivotable through about 180 degree to a position generally parallel to the body and on a side of the needle remote from the body. As the needle is withdrawn from the patient, the guard is pivoted about 90 degree further to receive the needle between one or more flexible contoured members along the opposite side of the guard. The needle (16) is thus captured and encapsulated within the guard, with audible confirmation, the members precluding the guard from pivoting away from the needle (16).