High-frequency jet ventilator
US4632107A · kind A · utility
13Cited by
3References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 11, 1985 |
| Grant date | Dec 30, 1986 |
| Priority date | — |
| Expiry date | Jul 11, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/2115
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An opposing vortex oscillator is used to control the frequency and duty cycle of a high-frequency jet ventilator for trauma management in acute and uncontrolled situations where no power other than the pressure of the ventilation gas itself is available. Frequency adjustment is achieved by connecting variable volumes to one inlet of the oscillator while duty cycle control is achieved by supplying fluid to one inlet of the oscillator through a variable-orifice bias control valve. Safety means are provided to automatically disable the ventilator in case of airway blockage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.