Ian Malcolm Smith;Andrew Roderick Bath;Nathan John Row;Alexander Virr
发明人:
Ian Malcolm Smith,Andrew Roderick Bath,Nathan John Row,Alexander Virr
申请号：
US12397850
公开号：
US09802022B2
申请日:
2009.03.04
申请国别(地区):
US
年份:
2017
代理人:
摘要：
A humidifier for a respiratory apparatus for delivering a humidified flow of breathable gas to a patient includes a humidifier chamber configured to store a supply of water to humidify the flow of breathable gas, the humidifier chamber comprising a first heating element configured to heat the supply of water； a relative humidity sensor to detect a relative humidity of ambient air and generate signals indicative of the ambient relative humidity； a first temperature sensor to detect a temperature of ambient air and generate signals indicative of the ambient temperature； and a controller configured to determine an absolute humidity of the ambient air from the signals generated by the relative humidity sensor and the first temperature sensor and to control the first heating element to provide a predetermined relative humidity to the flow of breathable gas. A method of humidifying a flow of breathable gas to be provided to a patient includes determining an absolute humidity of ambient air used to form the flow of breathable gas； and controlling a temperature of a supply of water that humidifies the flow of breathable gas to provide a predetermined absolute humidity corresponding to a predetermined temperature and a predetermined relative humidity of the flow to be delivered to the patient.
