초록

Respiratory gas is delivered to a patient enclosure past a variably heated surface over which a film of water migrates and whose wetness is visible through a transparent cover which is recessed at the water film side to define water inlet, gas flow, and excess water removal paths.

대표청구항 ▼

In combination: humidifying means in the form of a heat conductive surface and means for forming a film of water on said surface by migration of water over said surface from one region to another, when supplied with water, and means for flowing respiratory gas over said surface for humidifying the r

In combination: humidifying means in the form of a heat conductive surface and means for forming a film of water on said surface by migration of water over said surface from one region to another, when supplied with water, and means for flowing respiratory gas over said surface for humidifying the respiratory gas; heating means in the form of a heater in thermal contact with said heat conductive surface for heating the water at the outer surface of said film and the respiratory gas flowing over said film; said conductive surface of said humidifying means being formed of a material whose appearance is altered when wet, and means in the form of a transparent cover for permitting viewing of said regions of said surface.