Nasal oxygen therapy mask
US4266540A · kind A · utility
276Cited by
8References
4Claims
0Family size
Inventors
Key dates
| Filing date | Oct 13, 1978 |
| Grant date | May 12, 1981 |
| Priority date | — |
| Expiry date | Oct 13, 1998 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2210/0618
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An oxygen mask which covers only a patient's nose is attached to the patient by a flexible strap. A clip is attached to the outer surface of the mask to hold the portion of the mask firmly in place relative to the bridge of the patient's nose. An exhaust port is included in the mask. The mask also includes an integral mixing valve for mixing air and gas such as oxygen to achieve a prescribed percentage mixture as may be required for patient therapy. The mixing valve is supported by a support member attached to the mounting strap.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.