Patient-end humidifier

Details Patient-end humidifier Patient-end humidifier

1998-07-15

2000-08-01

Bushey, C. Scott

Gas and liquid contact apparatus

With external supply or removal of heat

Temperature or humidity sensor

261104, 261131, 261137, 261154, 12820327, 12820413, B01F 304

Patent

active

060955058

ABSTRACT:
An improved breathing gas humidifier including an evaporation module which has a contact chamber and a flash-resistant heat exchanger, a wicking layer on the heat exchanger, a liquid water flow controller, an electric resistance heater, and a breathing gas temperature controller. The contact chamber is defined by a rigid housing and in part by a flash-resistant heat exchanger. The rigid housing has a gas inlet for connection to a breathing gas source such as a ventilator, a water inlet for connection to a liquid water source by a liquid water flow passageway, and a breathing gas outlet connected to an inhalation passageway. The wicking layer is positioned in the contact chamber to receive and distribute liquid water. The breathing gas temperature controller is operably connected to the flow controller, the heater, and a temperature sensor in the breathing gas outlet.

REFERENCES:
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patent: 4618462 (1986-10-01), Fisher
patent: 4621632 (1986-11-01), Bartels et al.
patent: 4652408 (1987-03-01), Montgomery
patent: 4708831 (1987-11-01), Elsworth et al.
patent: 4911157 (1990-03-01), Miller
patent: 4926856 (1990-05-01), Cambio, Jr. et al.
patent: 5349946 (1994-09-01), McComb
patent: 5558084 (1996-09-01), Daniell et al.
patent: 5588423 (1996-12-01), Smith

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