Bellows arrangement for a ventilator/anesthesia system
US6263873A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 3, 1999 |
| Grant date | Jul 24, 2001 |
| Priority date | — |
| Expiry date | Feb 3, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M16/0081
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A bellows arrangement for a ventilator/anesthesia system has a rigid container in which a bellows is arranged. The first end of the bellows is fastened to one end of the container, and the other end is displaceable relative to the first end. The container is connected to a propellant source of the ventilator/anesthesia system, and the bellows is in gaseous communication with a respiratory circuit of the ventilator/anesthesia system at the first end. In order to insure that the bellows always moves smoothly in a simple and inexpensive fashion, the second end of the bellows is provided with a guidance fixture which is connected to the container in every position of the second end so that, in an expansion or compression of the bellows, the second end is always displaced along the center axis while remaining substantially of the bellows parallel to the first end.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.