Anaesthetic vaporizer with expandable/contractable reservoir for pumping liquid anaesthetic
US5645052A · kind A · utility
54Cited by
7References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 16, 1996 |
| Grant date | Jul 8, 1997 |
| Priority date | — |
| Expiry date | Jan 16, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M16/18
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An anaesthetic vaporizer for supplying an anaesthetic to a patient and having an inlet for receiving carrier gas and an outlet for delivering carrier gas laden with the anaesthetic to the patient. The vaporizer includes a pump having an expandable body, preferably of a metal, and which expands to draw in the liquid anaesthetic from a reservoir through a valving mechanism and which collapses to meter a precise amount of that liquid anaesthetic into a chamber where it is vaporized for introduction into the carrier gas as it passes between the inlet and the outlet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.