US 11,413,412 B2 · Breathable gas supply apparatus

Abstract

A CPAP device for delivering pressurized, humidified breathable gas for a patient includes a flow generator configured to pressurize a flow of breathable gas. The flow generator includes an air outlet and a removable water container configured to humidify the pressurized breathable gas received from the flow generator. The water container includes an air inlet and an air outlet. The CPAP device further includes a first elastomeric face seal configured to sealingly abut against a substantially flat portion of the water container surrounding the water container air inlet, the first elastomeric face seal being located at an intermediate position between the flow generator air outlet and the water container air inlet when the water container is placed into position to pneumatically communicate with the flow generator. In addition, the CPAP device includes a second elastomeric face seal, a portion of which is configured to sealingly abut against a substantially flat external surface portion of the water container surrounding the water container air outlet.

Claims30

Dependent claims

A breathable gas supply apparatus for treating a respiratory disorder with positive airway pressure therapy by delivering a flow of air pressurized in a range from 4 cm H2O to 28 cm H2O to a patient's airways, the breathable gas supply apparatus comprising:

a flow generator configured to pressurize the flow of air;
a base;
a water container configured to be removably supported by the base, and the water container comprising:
a chamber configured to be pressurized by the flow of air, and the chamber being configured to hold water to humidify the flow of air;
a flat surface that is external of the chamber;
a first water container opening that is in pneumatic communication with the chamber, the first water container opening being formed by a continuous edge of the flat surface, and the flat surface extending laterally outward from the continuous edge;
a second water container opening that is in pneumatic communication with the chamber;
and
a bottom portion comprising a heat conductive metal;
an electric heater pad configured to heat the bottom portion of the water container when a portion of the water container is supported on the base;
and
an elastomeric face seal configured to be positioned between the flow generator and the water container, contact and seal against the flat surface, and surround the first water container opening, when the portion of the water container is supported on the base,
wherein the flat surface and the elastomeric face seal are shaped and dimensioned such that the flat surface extends laterally outward of the elastomeric face seal when the elastomeric face seal contacts and seals against the flat surface.

10 more elements

a flow generator configured to pressurize the flow of air;
a water container comprising:
a chamber configured to be pressurized by the flow of air, and the chamber being configured to hold water to humidify the flow of air;
a flat surface that is external of the chamber;
a water container air inlet configured to receive the flow of air from the flow generator;
a water container air outlet configured to direct the flow of air out of the water container, and the water container air outlet being formed through the flat surface such that the flat surface bounds and surrounds the water container air outlet;
and
a bottom portion comprising a heat conductive metal;
a humidified air outlet pipe configured to be connected to an air conduit to direct the humidified, pressurized flow of air to a mask worn by the patient during therapy;
a recessed portion configured to removably receive a portion of the water container;
an electric heater pad configured to heat the bottom portion of the water container when the recessed portion removably receives the portion of the water container;
and
an elastomeric face seal configured to be positioned between the water container and the humidified air outlet pipe and surround the water container air outlet, when the recessed portion removably receives the portion of the water container, and the elastomeric face seal having an aperture and a peripheral portion around the aperture that is configured to contact and seal against the flat surface,
wherein the flat surface has a greater surface area than the peripheral portion that is configured to contact and seal against the flat surface.

11 more elements

Dependencies are inferred from the claim text.

Breathable gas supply apparatus

Life of this patent

Breathable gas supply apparatus

Life of this patent

Abstract

Claims30