Anesthesia humidifier
US4152379A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 26, 1977 |
| Grant date | May 1, 1979 |
| Priority date | — |
| Expiry date | May 26, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S261/65
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A gas humidifying device is disclosed which includes a generally enclosed chamber defining a water reservoir, and an umbrella-shaped member positioned in the chamber with its downwardly facing peripheral edge normally extending beneath the surface of the water in the reservoir, whereby the interior of said member defines a gas accumulation space in contact with the water surface. Gas inlet means are connected to the gas accumulation space for introducing a dry gas to be humidified; and gas outlet means are connected to the chamber, and communicate with the chamber which is external to the gas accumulation space within the unbrella-shaped member. At least portions of the peripheral edge of the umbrella-shaped member are upwardly displaceable from the normal position to a position above the water surface and such displacements intermittently occur as pressure builds up in the gas accumulation space in consequence of gas flow proceeding to such space from the inlet means. Such displacements of the member peripheral edge above the water surface enable intermittent flow of gas past the member edge, where intimate gas-water contact is effected, with the humidified gas then proceeding to …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.