Method and apparatus for metering an anaesthetic to a patient
US5649531A · kind A · utility
20Cited by
23References
28Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 19, 1995 |
| Grant date | Jul 22, 1997 |
| Priority date | — |
| Expiry date | Dec 19, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/3368
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The invention relates to a method and apparatus for metering to a patient an anaesthetic vaporized from anaesthetic liquid held in a liquid space (27) of a liquid container (18) into a gas space (28). The anaesthetic dose contained in a gas flow supplied to a patient is determined and the dose is adjusted in a manner that the dosage of anaesthetic in a gas intended to be respired by a patient matches a desired dosage and the dosage adjustment of anaesthetic contained in a gas supplied to a patient is effected automatically whenever the current dosage differs from a desired value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.