Importance

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Abstract

A fluid delivery device and method of delivering fluid is provided. The device comprises a delivery member including a member for creating a vacuum pressure, to suck fluid into a reservoir, and for expelling fluid from the reservoir. A body is provided including a first opening, a second opening, and a third opening, the interior of the body defining a first fluid pathway from the first opening to the second opening and a second fluid pathway from the second opening and a second fluid pathway from the second opening to the third opening. The delivery member is coupled to the second opening. A fluid source is coupled to the first opening. A fluid conduit is coupled to the third opening for allowing the device to deliver product to a patient. The first and second fluid pathways are defined in part by walls that define a central cavity and a diaphragm located therein. The diaphragm closing both the first and second fluid pathways when it is in a first, static position and opening the first pathway when the delivery member creates a vacuum pressure, while maintaining the second pathway in a closed position. When the delivery member creates a positive pressure, the second pathway is opened while the first fluid pathway is maintained in a closed position.

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First Claim