Seal-forming structure, positioning and stabilizing structure and diffuser vent for patient interface

US11628265B2 · kind B2 · utility

Assignee

• ResMed Pty Ltd · AU

Inventors

• Marvin Sugi Hartono · Singapore, SG
• Michael K. Truscott · Sydney, AU
• Craig David Edwards · Sydney, AU
• Chuan Foong Lee · Johor Bahru, MY
• Min Li Tee · Singapore, SG
• Shannon Day · Sydney, AU
• Nigel Paul Greig · Sydney, AU
• Christopher Daniel PARKER · Sydney, AU
• Angelene Marie Ozolins · Sydney, AU
• Jessica Lea Dunn · Sydney, AU
• Bishavjot SINGH · Sydney, AU
• Vinay MANJUNATH · Sydney, AU
• Chee Keong Ong · Singapore, SG
• Lorenz EBERL · Sydney, AU

Key dates

• Filing date: Apr 7, 2020
• Grant date: Apr 18, 2023
• Expiry date: Apr 7, 2040

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M2210/0618
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A patient interface to deliver a flow of air at a positive pressure with respect to ambient air pressure to an entrance to the patient's airways to ameliorate sleep disordered breathing includes a frame assembly and a cushion assembly configured to removably and repeatably connect to the frame assembly. The frame assembly and the cushion assembly form at least part of a plenum chamber pressurizable to a therapeutic pressure. The cushion assembly comprises a one-piece construction including a seal-forming structure configured to form a seal with a region of a patients face surrounding the entrance to the patients airways and a frame connection structure configured to removably and repeatably connect the cushion assembly to the frame assembly. The seal-forming structure comprises a first elastomeric material and the frame connection structure comprises a second elastomeric material, the first elastomeric material comprising a lower durometer or hardness than the second elastomeric material.