US12605518B2 Gas Passage for PAP Device with Noise Reduction
Summary
USPTO granted Patent US12605518B2 to WALLENBERG UNION LLC on April 21, 2026, covering a gas passage for use in a PAP (positive airway pressure) device with integrated noise reduction components. The patent claims 25 items and was filed on July 19, 2024, under Application No. 18778376. The invention includes a passage casing with air intake and outlet, a chamber for gas flow and accumulation, a blower, and noise reduction elements including a ventilation component, intake pipe, and flexible component.
“A gas passage for use in a PAP device configured to provide pressurized gas to a patient, including a passage casing with an air intake and an air outlet.”
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GovPing monitors USPTO Patent Grants - Medical Devices (A61M) for new healthcare & life sciences regulatory changes. Every update since tracking began is archived, classified, and available as free RSS or email alerts — 39 changes logged to date.
What changed
USPTO granted Patent US12605518B2 to WALLENBERG UNION LLC, covering a gas passage assembly for use in PAP (positive airway pressure) devices. The patent describes a passage casing with air intake and outlet that encompasses internal components and forms a chamber for gas flow and accumulation, with a blower to pressurize and output gas. The noise reduction system includes a ventilation component, intake pipe, and flexible component at the air intake.
Manufacturers of PAP devices or investors in sleep therapy technology should note this patent for freedom-to-operate considerations. The patent specifies precise structural requirements for effective noise reduction within the gas passage, which could inform product development strategies in the positive airway pressure device space.
Archived snapshot
Apr 23, 2026GovPing captured this document from the original source. If the source has since changed or been removed, this is the text as it existed at that time.
Gas passage for use in a pap device
Grant US12605518B2 Kind: B2 Apr 21, 2026
Assignee
WALLENBERG UNION LLC
Inventors
David Luo
Abstract
A gas passage for use in a PAP device configured to provide pressurized gas to a patient, including a passage casing with an air intake and an air outlet. The casing is configured to encompass and accommodate internal components and forms a chamber inside, where the chamber is configured to facilitate the flow and accumulation of gas. A blower is provided within the chamber to pressurize and output the gas. The internal components of the noise-reducing gas passage include noise reduction components configured to attenuate the noise of the gas entering the noise-reducing gas passage. These noise reduction components include a ventilation component, an intake pipe, and a flexible component at the air intake. Additionally, this disclosure specifies scientific and precise data requirements for the internal structure and positioning of the blower and noise-reducing components within the noise-reducing gas passage to achieve effective and excellent noise reduction.
CPC Classifications
A61M 16/0066 A61M 2205/42 A61M 2206/14 F04D 29/663 F04D 29/665 F04D 29/667 A62B 18/006 A62B 18/045
Filing Date
2024-07-19
Application No.
18778376
Claims
25
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