Patent ID: 8333195
Filing Date: 2012-12-18
Classification: A61M

Abstract:
1. An apparatus for providing breathing gas to a patient comprising: a base unit configured to provide a first flow of gas and a second flow of gas, the base unit including a gas heater configured to heat only the second flow of gas; a humidification canister configured to be releasably coupled to the base unit, the humidification canister including a humidification chamber and an insulation chamber, the humidification canister defining a first gas flow path in communication with the humidification chamber and a second gas flow path in communication with the insulation chamber, the humidification chamber configured to receive and humidify the first flow of gas, the insulation chamber completely surrounding the first gas flow path upstream and downstream of the humidification chamber; and a delivery tube assembly configured to be coupled to the humidification canister, the delivery tube assembly including a first lumen configured for fluid communication with the first gas flow path to receive the humidified first flow of gas and a second lumen configured to receive the second flow of gas.