Patent · US Active

Bladder cushion, forehead cushion, headgear straps, headgear cap and/or chinstrap

US8371293B2 · kind B2 · utility

11Cited by

7References

40Claims

0Family size

Assignee

ResMed Corp. · AU

Inventors

Robert Edward Henry · Parramatta, AU
Philip Rodney Kwok · Chatswood, AU
Karthikeyan Selvarajan · Sydney, AU
Philip John Gunning · Sydney, AU
Christopher John Baxter · Chatswood, AU

Key dates

Filing date	Dec 12, 2006
Grant date	Feb 12, 2013
Priority date	—
Expiry date	Sep 24, 2029

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61M2210/0618
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

A cushion for a patient interface includes two or more bladders arranged in concentric relation. Each of the bladders includes a face-contacting portion adapted to engage the patient's face, and each of the bladders is adapted to be pressurized independently from one another. At least one of the bladders is an active bladder that is pressurized to at least a sealing pressure to form a continuous seal with the patient's face in use.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.