Pressure activated valve for high flow rate and pressure venous access applications

A valve comprising:

• a first housing, the first housing including an inner wall and a first disk facing surface, the inner wall of the first housing defining a first lumen extending though the first housing, the first disk facing surface including an inner portion facing at least in part in an axial direction with respect to the first lumen and an outer portion facing at least in part in an axial direction with respect to the first lumen, the inner portion located radially away from the inner wall, the outer portion located radially outward from and in a different plane than the inner portion;
• a second housing, the second housing including an inner wall and a second disk facing surface, the inner wall of the second housing defining a second lumen extending through the second housing, the second disk facing surface including a protrusion and defining a relief well, the protrusion located radially outward from the inner wall of the second housing and further defining the relief well, the relief well located radially outward from the protrusion;
• a flexible disk including a first surface facing the first disk facing surface, a second surface facing the second disk facing surface, and a side wall extending between the first surface and the second surface, the first surface including a first contact surface and a second contact surface, at least a portion of the first contact surface contacting the inner portion of the first disk facing surface and at least a portion of the second contact surface contacting the outer portion of the first disk facing surface, a portion of the second surface of the flexible disk being pinched by the protrusion and a portion of the first disk facing surface, wherein at least a radially outer portion of the flexible disk is free to deform and enter the relief well,
• wherein the first disk contacting surface extending proximally away at an angle from an opening within the first lumen along the longitudinal axis, the second disk contacting surface is located radially outward from and at a different angle relative to the first disk contacting surface.