Respiratory assistance apparatus
AssigneeFisher & Paykel Healthcare Limited
InventorsAdam John Darby, Donald Roy Kuriger, Johannes Nicolaas Bothma, Scott Bent
Life of this patent
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Abstract
A head-mounted respiratory assistance apparatus configured to provide a respiratory gases stream to a user. The head-mounted respiratory assistance has a main body securable to the head of a user and a blower unit that is operable to generate a pressurised gases stream from a supply of gases from the surrounding atmosphere. A patient interface is provided on the main body that has a gases inlet which is fluidly connected to the blower unit and which is configured to deliver the pressurised gases to the user's nose and/or mouth.
Claims21
1-57. (canceled)
A head-mountable respiratory assistance apparatus configured to provide a respiratory gases stream to a user, comprising:
- a patient interface;
- and
- a blower unit comprising a lightweight impeller, the blower unit being fixedly or releasably mounted to the front of the patient interface and having a gases inlet to receive a supply of gases from the surrounding atmosphere and being operable to generate a pressurised gases stream at a gases outlet,
- wherein the patient interface has a gases inlet which is fluidly connected to the gases outlet of the blower unit and which is configured to deliver the pressurised gases to the user's nose and/or mouth via one or more gases outlets,
- wherein a gases flow path from the gases inlet of the blower unit to the gases outlet(s) of the patient interface is substantially sealed such that there is zero bias flow along the gases flow path, and
- wherein the apparatus is configured so that excess exhaled gases from the user vent back through the gases flow path in the opposite direction of the pressurised gases stream and exit the head-mountable respiratory assistance apparatus into the atmosphere from the gases inlet of the blower unit.
Dependencies are inferred from the claim text.