Gas and liquid contact apparatus – With external supply or removal of heat – Temperature or humidity sensor
Patent
1986-05-21
1987-11-24
Miles, Tim
Gas and liquid contact apparatus
With external supply or removal of heat
Temperature or humidity sensor
261142, 261104, 261DIG65, 12820327, 12820317, 12820413, 604253, 219497, A61M 1616
Patent
active
047088311
ABSTRACT:
A humidifier has a supply of water suspended on a pole above a patient which supplies water through a removable drop counter of magnetically actuated ball valve to a microporous tube mounted in but mechanically separated from a ventilating line between a ventilator and the patient. The water is heated in the microporous tube to create a vapor pressure sufficient to cause water vapor but substantially no liquid water to pass through the tube into the ventilating line. Electrically energized controls are provided to obviate maloperation and to maintain safe operating conditions including maintaining safe temperature conditions, and prevention of excess water entering the ventilation line by counting the drops of water passing through the bold valve, and closing the ball valve if the count rate is outside desired count rates and power or the monitoring equipment fails.
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Daniell Michael G.
Elsworth Adrian J.
Stewart David P. M.
Zwaan Paul
Fisher & Paykel Limited
Miles Tim
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