Cushion inside a cushion patient interface
US7631644B2 · kind B2 · utility
39Cited by
18References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 19, 2007 |
| Grant date | Dec 15, 2009 |
| Priority date | — |
| Expiry date | Jan 22, 2028 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M16/0816
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A patient interface device including a cushion assembly having a cushion-in-a-cushion arrangement and a system for supplying a flow of gas to a patient using such an interface device. The patient interface includes a mask shell having a patient side and an outer side opposite the patient side adapted for receiving a supply of gas. A seal cushion contacts a first area of a patient's face to form a seal therewith. A support cushion encircles the seal cushion and includes a first end portion that contacts a second area of a patient's face.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.