초록 ▼

A medical valve device for use in selectively establishing a fluid flow between first and second medical implements is disclosed. The valve has a body defining a passage from a first port to a second port. The valve defines a first fluid volume when both medical implements are connected thereto, and

A medical valve device for use in selectively establishing a fluid flow between first and second medical implements is disclosed. The valve has a body defining a passage from a first port to a second port. The valve defines a first fluid volume when both medical implements are connected thereto, and a second, smaller volume when one of the implements is disconnected, thereby causing a positive flow of fluid from the valve to the second medical implement when the first implement is disconnected.

대표청구항 ▼

[ What is claimed is:] [1.]1. A medical valve for controlling the flow of fluid between a first medical implement and a second medical implement, said valve comprising a body having a cavity in communication with a second medical implement and an opening adapted to receive a first medical implement,

[ What is claimed is:] [1.]1. A medical valve for controlling the flow of fluid between a first medical implement and a second medical implement, said valve comprising a body having a cavity in communication with a second medical implement and an opening adapted to receive a first medical implement, a rigid sealing element positioned within said body and movable between a first position in which said seal prevents fluid flow through said body and a second position in which fluid flow is permitted through said body, said cavity including a fluid space which automatically and reversibly increases in size when said first medical implement is connected to said valve and which contracts in size when said first medical implement is disconnected, said sealing element comprising a piston movably mounted with respect to said body, and a ledge positioned within said cavity, said piston having a shoulder engaging said ledge when said piston is in said first position.