Patent ID: 8529523
Filing Date: 2013-09-10
Classification: A61M,F16K,Y10T

Abstract:
1. A valve for controlling material flow through a catheter, comprising: a disk-shaped first flexible member including a plurality of slits, each of the slits being formed by respective first and second flaps, the first and second flaps moving, when subjected to a fluid pressure of at least a predetermined threshold level, to an open position so that material may flow past the first flexible member through a first lumen of the catheter, the first and second flaps remaining closed when a fluid pressure exerted there against is less than the threshold level to prevent flow through the first lumen, the first flexible member comprising a first material, wherein a length of at least one of the slits is approximately 0.15 to 0.28 inches and wherein at least one of the slits permits a flow rate there through of at least 300 ml/min when opened; and a first biasing member coupled to a surface of the first flexible member for biasing the first and second flaps of the plurality of slits toward the closed position, the first biasing member comprising a second material that is different from the first material.