ALEXANDRIA, Va., Feb. 19 -- United States Patent no. 12,226,577, issued on Feb. 18, was assigned to ResMed Pty Ltd (Bella Vista, Australia).

"Patient interface with foam seal-forming structure" was invented by Matthew Eves (Sydney), Lemmy Nga (Sydney), Gerard Michael Rummery (Woodford, Australia), Rupert Christian Scheiner (Sydney) and Shannon Day (Sydney).

According to the abstract* released by the U.S. Patent & Trademark Office: "A cushion assembly for a patient interface for sealed delivery of a flow of air at a continuously positive pressure to a patient's airways includes a foam cushion configured to sealingly engage the patient's face; and an elastomeric support portion configured to support the foam cushion and form at least part o...