Gas humidifying apparatus and method
US4541966A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 24, 1984 |
| Grant date | Sep 17, 1985 |
| Priority date | — |
| Expiry date | Aug 24, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S261/65
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An apparatus and method for humidifying gases, suitable for use in conjunction with a high frequency positive pressure ventilation (HFPPV) respiratory system, includes a nebulizing chamber 11 arranged to receive a pulsed gas flow from an oscillating valve 5 and a liquid reservoir 15 communicating with the chamber 11 such that in use liquid from the reservoir 15 passes into the chamber and is entrained in droplet form by the gas flow. A pump 20 is intermittently operable to introduce a predetermined quantity of liquid into the reservoir 15, and control means 6 of the apparatus are adapted to maintain the valve 5 in its closed condition during operation of the pump 20.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.