Multi-frequency jet ventilation technique and apparatus
US4838259A · kind A · utility
38Cited by
30References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 14, 1988 |
| Grant date | Jun 13, 1989 |
| Priority date | — |
| Expiry date | Mar 14, 2008 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M16/0096
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Respiration therapy is accomplished by generating pulses of inhalation gas for delivery to a patient. The inhalation gas pulses may be generated by entraining humidified low pressure gas with pulses of high pressure entrainment gas. The pulses of entrainment gas may be of variable frequency, duration and duty cycle and are produced by modulating the flow of a highly pressured gas with a solenoid operated valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.