Patent ID: 7252652
Filing Date: 2007-08-07
Classification: A61M,Y10T

Abstract:
1. A pressure activated two-way slit valve assembly for a catheter, the pressure activated two-way slit valve assembly comprising: a first end; a second end; a wall extending between the first end and the second end, the wall defining a dumbbell shaped channel, wherein the dumbbell shaped channel has a dumbbell shaped cross-section perpendicular to a longitudinal axis of the pressure activated two-way slit valve assembly, located between the first end and the second end; a flexible, thin disk comprising a slit, the flexible, thin disk disposed within the pressure activated two-way slit valve assembly such that the slit is substantially perpendicular to the longitudinal axis of the pressure activated two-way slit valve assembly and resides within the dumbbell shaped channel with a first dumbbell shaped portion of the dumbbell shaped channel proximal to the disk and a second dumbbell shaped portion of the dumbbell shaped channel distal thereto, wherein the slit and the dumbbell shaped channel are sized to enable the slit to deform in response to a predetermined pressure differential across the slit to allow fluid to pass therethrough.