Arrangement for passive gas sampling
US7040183B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 16, 2003 |
| Grant date | May 9, 2006 |
| Priority date | — |
| Expiry date | Apr 25, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2001/2244
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An arrangement for passive gas sampling of a breathing gas in a breathing system allows sampling during both inspiration and expiration. The arrangement has a tube-piece having a first connector for receiving an inspiratory gas flow, a second connector for delivering an expiratory gas flow and a third connector for delivering the inspiratory gas flow and receiving the expiratory gas flow, a first port arranged between the second connector and the third connector and connected to a measurement chamber, a second port arranged between the first connector and the third connector and connected to the measurement chamber and a third port arranged between the first connector and the second connector and connected to the measurement chamber. The tube-piece is formed such that when an inspiratory flow passes through the tube-piece, a flow is established principally between the first port, the measurement chamber and the second port, and that when an expiratory flow passes through the tube-piece a flow is established principally between the third port, the measurement chamber and the first port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.