Respiratory gas heating and humidifying methods and apparatus
US4430994A · kind A · utility
99Cited by
11References
16Claims
0Family size
Inventors
Key dates
| Filing date | May 11, 1981 |
| Grant date | Feb 14, 1984 |
| Priority date | — |
| Expiry date | May 11, 2001 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/12
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Respiratory gas is delivered to a patient enclosure past a variably heated surface over which a film of water migrates and whose wetness is visible through a transparent cover which is recessed at the water film side to define water inlet, gas flow, and excess water removal paths.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.