초록 ▼

Respiratory gas is humidified by flowing it along a flowpath at least a portion of whose wall is formed of a barrier material which is pervious to water vapor and impervious to water while the side of said wall opposite the flowpath is subjected to one or both of water and water vapor. Production of

Respiratory gas is humidified by flowing it along a flowpath at least a portion of whose wall is formed of a barrier material which is pervious to water vapor and impervious to water while the side of said wall opposite the flowpath is subjected to one or both of water and water vapor. Production of such a flowpath can be accomplished by compressing and bonding together selected portions of a resilient, open-celled material which is disposed as a layer between layers of water impermeable material at least one of which layers is permeable by water vapor.

대표청구항 ▼

In a humidifier for humidifying respiratory gas, the structure comprising: a flexible, gas tight bag comprising a front wall and back wall of pliable material bonded together at a marginal bond; a labyrinth means having an inlet and an outlet and suspended within said bag and comprising: a rear laye

In a humidifier for humidifying respiratory gas, the structure comprising: a flexible, gas tight bag comprising a front wall and back wall of pliable material bonded together at a marginal bond; a labyrinth means having an inlet and an outlet and suspended within said bag and comprising: a rear layer porous to water vapor but not to water; a front layer porous to water vapor but not to water; an intermediate foam layer porous to water vapor; bond line means for forming a flow path through said labyrinth means between said inlet and said outlet; and bond line means for providing a first passage way between said inlet and the exterior of said bag and a second passageway between said outlet and the exterior of said bag.