Patent ID: 7186236
Filing Date: 2007-03-06
Classification: A61M

Abstract:
1. An infusion device for delivering infusion medium to a patient and for receiving infusion medium from a hollow needle during a fill or re-fill operation, the device comprising: a housing having a reservoir portion for containing a volume of infusion medium and an outlet through which infusion medium may be dispensed; and an inlet structure provided in fluid flow communication with the reservoir portion of the housing, the inlet structure having an inlet opening, a septum, a moveable valve member and means for imparting a force on the valve member to urge the valve member against the septum; wherein the septum has a side disposed in relation to the inlet opening, to seal the inlet opening; wherein the valve member is disposed on the opposite side of the septum relative to the side of the septum that seals the inlet opening, the valve member being moveable between a first state in which the valve member contacts the septum and a second state in which the valve member is spaced from the septum to define a volume space between the septum and the valve member; wherein the moveable valve member has a first surface for contacting a tip of a needle passed through the inlet opening and the septum to move the valve member to the second state; and wherein upon the valve member being in the second state, the distance between the first surface of the valve member and the septum is no greater than about 0.075 inch.