Anesthetic system with multiple valve-controlled bellows
US5769072A · kind A · utility
67Cited by
10References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 18, 1997 |
| Grant date | Jun 23, 1998 |
| Priority date | — |
| Expiry date | Mar 18, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2230/437
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An anesthetic system has an external gas reservoir and three gas bellows arranged in the external gas reservoir to alternatingly collect or deliver breathing gas from and to a ventilator unit. In this manner a completely closed system is achieved with minimal consumption of, primarily, anesthetic. The bellows are regulated by a regulatory unit which, via a valve system, can selectively connect a source of drive gas to one or more of the containers in order to compress the gas bellows respectively contained therein. When no drive gas is supplied, each bellows passively expands.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.