Nasal mask
US6662803B2 · kind B2 · utility
160Cited by
17References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 14, 2001 |
| Grant date | Dec 16, 2003 |
| Priority date | — |
| Expiry date | Jun 14, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/42
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A CPAP system is described for improved respiratory therapy of patients. In particular a patient interface is disclosed with an outlet vent with lower noise levels and more diffused outlet flow over prior art outlet vents. The outlet vent includes a main vent which is diffused and muffled and a higher resistance vent provided in case the main vent is blocked. The outlet vent is removable for easy maintenance and provides indication to the user when maintenance is required. The outlet vent described may be used on nasal masks, mouthpieces and patient interfaces generally.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.