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US 9,802,023 B2Granted
Humidifier
AssigneeFisher & Paykel Healthcare Limited
InventorJonathan Mark Church
Life of this patent
Estimating the term…
Abstract
A device is provided that humidifies breathing gas. The device has a chamber with an inlet and an outlet. A chemical heater is positioned within the chamber and a trigger activates the heater. The chamber can be a conduit with an inner wall and an outer wall with a reservoir defined therebetween. The chemical heater can be positioned within the reservoir.
Claims21
A device for humidifying breathing gas comprising:
- a chamber for humidifying gas, the chamber having an inlet and an outlet,
- a chemical heating element disposed for thermal exchange with at least a part of the chamber,
- a trigger configured for activating the chemical heating element to generate heat, and
- a sealed reservoir configured to store humidification fluid that is dispensed into the chamber when the reservoir is unsealed,
- wherein on activation the chemical heating element generates heat for heating of gas passing through the chamber from the inlet to the outlet and for heating of humidification fluid dispensed to the chamber to generate vapour, thereby promoting vapour uptake by the gas.
2 more elements
A device for humidifying breathing gas comprising:
- a chamber configured to humidify gas, the chamber having an inlet and an outlet,
- a chemical heating element disposed for thermal exchange with at least a part of the chamber,
- a trigger configured for activating the chemical heating element to generate heat, and
- a source of humidification fluid dispensable to the chamber,
- wherein the trigger comprises a plunger, the plunger comprises a humidification fluid reservoir that is the source of humidification fluid, the humidification fluid reservoir is sealed from the chamber when in a pre-use configuration, and the humidification fluid reservoir is unsealed and humidification fluid is dispensed into the chamber when in an in-use configuration,
- such that, in use, on activation the chemical heating element generates heat configured to heat gas passing through the chamber from the inlet to the outlet and to heat humidification fluid dispensed to the chamber to generate vapour, thereby promoting vapour uptake by the gas.
3 more elements
A device for humidifying breathing gas comprising:
- a chamber for humidifying gas, the chamber having an inlet fluidly connectable to a gas supply, and an outlet fluidly connectable to a user gas delivery device,
- a chemical heating element disposed for thermal exchange with at least a part of the chamber,
- a trigger configured for activating the chemical heating element to generate heat, and
- a humidification fluid reservoir that is sealed from the chamber when in a pre-use configuration, wherein the humidification fluid reservoir is unsealed and humidification fluid is dispensed into the chamber when in an in-use configuration,
- wherein, in the in-use configuration, the chemical heating element generates heat for heating of gas passing through the chamber from the inlet to the outlet and for heating of humidification fluid dispensed to the chamber to generate vapour, promoting vapour uptake by the gas.
2 more elements
Dependencies are inferred from the claim text.