RESMED Vent System Patient Interface Patent Granted
Summary
USPTO granted patent US12594397B2 to ResMed Pty Ltd on April 7, 2026, covering a vent system for patient interface used in CPAP/BiPAP mask ventilation. The patent describes a vent housing with an inlet, outlet, exhaust gas orifice, and an elastically deformable moveable membrane that responds to pressure differences to regulate exhaust gas flow. The patent contains 46 claims and has a filing date of February 26, 2020.
What changed
USPTO granted patent US12594397B2 to ResMed Pty Ltd covering a vent system for patient interface. The patent describes a vent housing with an inlet, outlet, exhaust gas orifice, and a moveable membrane that elastically deforms in response to pressure differences between interior and exterior sides to regulate exhaust gas flow through a variable cross-section passage. The invention relates to CPC classifications A61M 16/06 and A61M 16/16, indicating CPAP/BiPAP mask ventilation technology.
Medical device manufacturers developing sleep therapy or ventilation equipment should be aware of this patent when designing similar patient interface systems with adjustable exhaust venting. The patent provides ResMed with intellectual property protection for this specific membrane-based flow regulation mechanism in the US market.
Archived snapshot
Apr 17, 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.
Vent system for patient interface
Grant US12594397B2 Kind: B2 Apr 07, 2026
Assignee
RESMED PTY LTD
Inventors
Michael Christopher Hogg, Luke Andrew Stanislas
Abstract
A vent structure may include a vent housing comprising an inlet, an outlet, at least one exhaust gas orifice, and a membrane having a first end and a second end spaced apart, the membrane having a moveable portion between the first end and the second end. The moveable portion may be spaced radially from a membrane-facing surface inside of the vent housing to form an exhaust gas flow passage therebetween to allow exhaust gas to flow from the pressurised volume through the exhaust gas flow passage to atmosphere via the exhaust gas orifice. The moveable portion may be elastically deformable and configured to move radially relative to the membrane-facing surface in response to pressure differences between an interior side of the membrane and an exterior side of the membrane to change a cross-sectional area of the exhaust gas flow passage and regulate the vent flow of gas.
CPC Classifications
A61M 16/0666 A61M 16/208 A61M 16/0683 A61M 16/0816 A61M 16/06 A61M 16/16 A61M 2205/42
Filing Date
2020-02-26
Application No.
17433835
Claims
46
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