System and method for delivering warm humidified air
First Claim
1. A system for delivering warm humidified air to a patient comprising, in combination, means for heating air to a desired temperature, means for humidifying at least a portion of such heated air, means for delivering at least a portion of such humidified heated air to the patient, and means using a remaining portion of the heated air not delivered to the patient to maintain the temperature of the humidified heated air substantially constant as it is delivered to the patient, whereby there is no substantial change in the humidity of the heated humidified air as it is delivered to the patient.
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Accused Products
Abstract
A system for delivering warm humidified air to a patient. Pressurized air is heated to a predetermined temperature and a portion of the heated air is humidifed to substantially 100% relative humidity. The warm humidified air is delivered to a patient through an inner one of a pair of coaxial hoses. The remaining heated air is passed through an annular passage between the two hoses to maintain the temperature and vapor content of the warm humidified air delivered to the patient.
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Citations
10 Claims
- 1. A system for delivering warm humidified air to a patient comprising, in combination, means for heating air to a desired temperature, means for humidifying at least a portion of such heated air, means for delivering at least a portion of such humidified heated air to the patient, and means using a remaining portion of the heated air not delivered to the patient to maintain the temperature of the humidified heated air substantially constant as it is delivered to the patient, whereby there is no substantial change in the humidity of the heated humidified air as it is delivered to the patient.
- 6. A system for delivering to a patient a warm gas containing a vapor comprising, in combination, means for heating such gas to a desired temperature, means for adding a vapor to at least a portion of such heated gas, means for delivering at least a portion of such heated gas and vapor to the patient, and means using a remaining portion of the heated gas not delivered to the patient to maintain the temperature of such heated gas and vapor whereby there is no substantial change in the saturation of the heated gas and vapor as they are delivered to he patient.
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8. A method of delivering warm humidified air to a patient comprising the steps of:
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(a) heating air to a desired temperature; (b) humidifying at least a portion of said heated air; (c) delivering at least a portion of said humidified heated air to the patient; and (d) using a remaining portion of said heated air not delivered to the patient to maintain the temperature of said humidified heated air substantially constant as it is delivered to the patient whereby there is not substantial change in the humidity of the heated humidified air as it is delivered to the patient. - View Dependent Claims (9, 10)
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Specification