×

Inspiratory tube for a ventilator

  • US 6,152,132 A
  • Filed: 08/25/1998
  • Issued: 11/28/2000
  • Est. Priority Date: 09/11/1997
  • Status: Expired due to Term
First Claim
Patent Images

1. 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; and

    said 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.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×