Patent ID: 6152132
Filing Date: 2000-11-28
Classification: A61M,Y10S

Abstract:
A breathing tube for use in a breathing-assist system, said tracheal tube comprising:a tube wall having an interior surface and an exterior surface, said interior surface defining a gas flow channel with a distal end and a proximal end for carrying a flow of breathing gas therein;said tube wall having an opening therein, proceeding through said tube wall from said interior surface to said exterior surface, at a distance from said distal end;an expiratory valve disposed in said opening and communicating with ambient air;said gas flow channel having a constriction therein between said distal end and said opening;a first channel proceeding within said tube wall substantially parallel to said gas flow channel and opening into said gas flow channel between said distal end and said constriction;a second channel proceeding within said tube wall substantially parallel to said gas flow channel and opening into said gas flow channel between said constriction and said opening; andsaid first and second channels being adapted for connection to a pressure gauge for determining at least one of flow and pressure of said breathing gas.