Rotatable medical valve closure

Abstract

A medical closure device for providing a passage into or out of the body. A resilient member at least partially defines the passage, and a two-part body is disposed to permit relative rotation its parts about the passage axis. The first body portion compresses and supports the resilient member. Cam surfaces on the second body control a compression member which is disposed in a radially extending aperture of the first body portion and biased radially outwardly by the resilient member to maintain contact with the cam surface. Relative rotation of the body portions about the axis moves the cam surface relative to the compression member, causing radial displacement of the compression member from a first position (in which the passage is relatively uncompressed and open) to a second position (in which the passage is restricted).

1 . A medical closure device for use with a passage into or out of the body for both pressurized fluids and a medical device, comprising in combination: 
 a resilient member at least partially defining a through-passage having an axis, said passage sized to pass a selected medical device and pressurized fluid, said resilient member being of material selected, in response to radial pressure applied to said resilient member, to form a pressure seal upon said medical device when present in said passage and upon an opposing surface defining said passage when said medical device is not present;    said body including first and second body portions connected together in mannger permitting their relative rotation about said axis, said first body portion mounting said resilient member and said second body portion including an internal cam having a cam surface oriented about and spaced from the axis of said passage with a first surface portion disposed relatively closer to said axis than a circumferentially spaced second surface portion;    said body portions and said resilient member being sealed together in manner to withstand, without leakage, fluid under pressure of about 300 psi or greater in said passage without leakage; and    a compression member positioned in a radially extending aperture in said first body portion and biased radially outwardly by said resilient member to maintain contact with said cam surface,    said body portions being cooperatively related, whereby, upon relative rotation of said body portions, said cam surface is moved relative to said compression member to cause radial displacement of said compression member closer to the axis of said passage to cause said resilient member to grip and pressure seal upon the exterior of said medical device, when present in said passage, or upon said opposing surface defining said passage when said medical device is not present.