Humidifier chamber

Surgery – Respiratory method or device – Means for mixing treating agent with respiratory gas

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Details

12820317, 12820414, A61M 1616

Patent

active

055884237

ABSTRACT:
A humdification chamber for the humidification of respiratory gases has particular application for use over extended time periods with infrequent refills.
The humidification chamber has a heated reservoir and a supply reservoir, the heated reservoir adapted to be in thermal contact with a heater base to which the humidification chamber is attached. A partition separates the heated reservoir from the supply reservoir, the partition having a gas flow path and a liquid flow path, the flow paths allowing gas and liquid communication respectively between the supply and heated reservoirs. The partition substantially thermally insulates the supply reservoir from the heater base. A gas inlet port and a gas outlet port are provided in the top surface of the humidification chamber to allow gases to be humidified to circulate through the chamber above the heated reservoir.
In use the humidifier chamber has a large overall liquid capacity and therefore a longer duration between refills is available, while the heater base is required to heat substantially only the heated reservoir. The extended use chamber may be used with existing heater bases.

REFERENCES:
patent: 670084 (1901-03-01), Sloane
patent: 3193261 (1965-06-01), Nesbitt
patent: 3219795 (1965-11-01), Wiseman
patent: 3610879 (1971-10-01), Katzman
patent: 3638926 (1972-02-01), Melville et al.
patent: 3971913 (1976-07-01), Myklebust
patent: 4621632 (1986-11-01), Bartels et al.
patent: 5195514 (1993-03-01), Liu et al.

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