Seal for a patient interface, interface assemblies and aspects thereof

US11419999B2 · kind B2 · utility

Assignee

• Fisher & Paykel Healthcare Limited · NZ

Inventors

• Roheet Patel · Auckland, NZ
• Peter David Alexander Bearne · Auckland, NZ
• Michael John Henri Cox · Hertford, GB
• Fadi Karim Moh'd Mashal · Auckland, NZ
• Kirstin Elizabeth Middelkoop · Auckland, NZ

Key dates

• Filing date: Aug 5, 2014
• Grant date: Aug 23, 2022
• Expiry date: Feb 3, 2037

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M2210/0625
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A mask assembly or interface with a mask assembly includes a mask seal and a mask shell that supports the mask seal. In some configurations, the mask assembly is configured to be fully positioned lower than a bridge of a nose of a face of a user and to provide an exposed bridge of the nose of the user. The mask seal includes one or more features that decouple movement of the nasal portion and the oral portion to allow relative movement therebetween at least about a longitudinal axis extending in the front to back direction of the mask seal. In some configurations, an interface assembly includes a movement limiting arrangement that limits movement of the upper portion of the mask seal.