초록 ▼

A hemostasis valve is provided for catheters or the like, comprising an elastomeric partition valve secured in a housing. A linear slit extends through the partition valve between the major faces thereof. By this invention, the partition of the valve has at least one concave face through which the s

A hemostasis valve is provided for catheters or the like, comprising an elastomeric partition valve secured in a housing. A linear slit extends through the partition valve between the major faces thereof. By this invention, the partition of the valve has at least one concave face through which the slit extends. Such a partition valve provides further improved sealing characteristics over a wide range of diameters of catheters, leads, or the like penetrating the partition valve, particularly reducing frictional resistance to catheter advancement and rotation through the valve and also reducing catheter collapse in the valve.

대표청구항 ▼

A valve which comprises an elastomeric partition member having a first face and a second, opposed face and adapted for securement in a housing, and a slit extending through said valve between the first and second faces, the improvement comprising, in combination: at least one of said faces defining

A valve which comprises an elastomeric partition member having a first face and a second, opposed face and adapted for securement in a housing, and a slit extending through said valve between the first and second faces, the improvement comprising, in combination: at least one of said faces defining a concave surface to reduce the central thickness of said partition member, said slit extending through said concave surface, said slit further defining a first line on said first face and a second line on said second face, said first line and said second line having a similar configuration but being in non-alignment with each other, with a generally helical slit section extending between said first line and said second line through said partition member.