Respiratory assistance apparatus
First Claim
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1. A head-mounted respiratory assistance apparatus configured to provide a respiratory gases stream to a user, comprising:
- a main body securable to the head of a user;
a blower unit provided on the main body having a gases inlet to receive a supply of gases from the surrounding atmosphere and which is operable to generate a pressurised gases stream at a gases outlet, wherein the blower unit comprises a casing and wherein the gases outlet extends radially outward from a center of the casing; and
a patient interface provided on the main body having a gases inlet which is fluidly connected via a gases flow path 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 the 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, andwherein the blower unit comprises a lightweight shroudless impeller, wherein the impeller comprises a plurality of separated impeller blades extending outward from a central hub of the impeller, and a motor with a rotatable drive shaft that is configured to rotate the impeller.
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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 pressurized 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 pressurized gases to the user'"'"'s nose and/or mouth.
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Citations
20 Claims
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1. A head-mounted respiratory assistance apparatus configured to provide a respiratory gases stream to a user, comprising:
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a main body securable to the head of a user; a blower unit provided on the main body having a gases inlet to receive a supply of gases from the surrounding atmosphere and which is operable to generate a pressurised gases stream at a gases outlet, wherein the blower unit comprises a casing and wherein the gases outlet extends radially outward from a center of the casing; and a patient interface provided on the main body having a gases inlet which is fluidly connected via a gases flow path 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 the 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 blower unit comprises a lightweight shroudless impeller, wherein the impeller comprises a plurality of separated impeller blades extending outward from a central hub of the impeller, and a motor with a rotatable drive shaft that is configured to rotate the impeller. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification