Sheath valve housing

A sheath valve housing (100) including: an input port (120) disposed on a proximal side of the sheath valve housing; an output port (140) disposed on a distal side of the sheath valve housing, the input port and output port defining a longitudinal axis (130) extending therethrough; a chamber (170) disposed within the sheath valve housing between the input port and the output port and centered on the longitudinal axis, a catheter pathway being defined within the sheath valve housing through the chamber between the input port and the output port; and a plurality of ribs (180, 180b) disposed about the chamber so that a member is aligned with the longitudinal axis upon insertion into the chamber.