Method and arrangement for vaporizing an anaesthetic
US5832917A · kind A · utility
8Cited by
12References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 22, 1996 |
| Grant date | Nov 10, 1998 |
| Priority date | — |
| Expiry date | Jan 22, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/3368
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method and an arrangement in connection with vaporizing an anaesthetic, in which an anaesthetic, vaporized in a vaporizer is mixed with fresh gas and delivered to be inhaled by a patient. In order to achieve a reliable operation, the prevailing ambient air pressure is measured, the measured air pressure is compared with a reference pressure and when the prevailing ambient air pressure deviates from the reference pressure, the anaesthetic agent concentration of the fresh gas/anaesthetic mixture to be passed to the patient is adjusted in relation to the variation in the ambient external air pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.