USPTO Patent Grant for Modular Oro-Nasal Patient Interface

ChangeBridge: Patent Grants - Medical Devices (A61M)

Published March 24th, 2026

Detected March 25th, 2026

Summary

The USPTO has granted patent US12582789B2 for a modular oro-nasal patient interface developed by ResMed Asia Pte. Ltd. The patent covers a vent structure designed to maintain therapeutic pressure while accommodating an oral cushion for oro-nasal use.

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What changed

The United States Patent and Trademark Office (USPTO) has granted patent US12582789B2 for a modular oro-nasal patient interface. The patent, assigned to ResMed Asia Pte. Ltd., details a novel vent structure within a nasal plenum chamber that allows for continuous gas flow while maintaining therapeutic pressure. The design includes a selectively movable vent wall biased towards a closed position, which can be opened by contact with an oral cushion to form an oro-nasal cushion.

This patent grant signifies a new intellectual property asset for ResMed in the medical device sector, specifically for respiratory interfaces. While this is a patent grant and not a regulatory rule, it may inform future product development and competitive landscapes for manufacturers of CPAP and other respiratory support devices. Compliance officers in this sector should be aware of new patented technologies that could impact market entry or product design requirements.

Source document (simplified)

← USPTO Patent Grants

Modular oro-nasal patient interface

Grant US12582789B2 Kind: B2 Mar 24, 2026

Assignee

ResMed Asia Pte. Ltd.

Inventors

Robin Yew, Weiyi Chia, Han Cheng Lin, Sipu Chen

Abstract

A patient interface including a vent structure that allows a continuous flow of gases exhaled by the patient from an interior of a nasal plenum chamber to the ambient. The vent structure is sized and shaped to maintain the therapeutic pressure in the nasal plenum chamber in use. The vent structure includes a housing secured to the nasal plenum chamber, and a vent wall coupled to the rigid housing and selectively movable between a closed position and an open position. The vent wall is biased toward the closed position. The vent wall is maintained in the closed position and is configured to be positioned in the open position as a result of contact with an oral cushion in order to accommodate the oral cushion with an oral plenum chamber and form an oro-nasal cushion.

CPC Classifications

A61M 16/0666 A61M 16/0683 A61M 16/0616 A61M 16/0875 A61M 16/0816 A61M 16/00 A61M 16/06 A61M 16/0672 A61M 2207/00 A61M 2210/00 A61M 2210/06 A61M 2210/0618 A61M 2210/0625