| 摘要 |
An arrangement (2) for passive gas sampling of a breathing gas in a breathing system is disclosed. Effective sampling during both inspiration and expiration is achieved through the arrangement (2) being comprised of a tube-piece having a first connector (4) for receiving an inspiratory gas flow, a second connector (6) for delivering an expiratory gas flow and a third connector (8) for delivering the inspiratory gas flow and receiving the expiratory gas flow, a first port (10) arranged between the second connector (6) and the third connector (8) and connected to a measurement chamber (16), a second port (12) arranged between the first connector (4) and the third connector (8) and connected to the measurement chamber (16) and a third port (14) arranged between the first connector (4) and the second connector (6) and connected to the measurement chamber (16), wherein 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 (10), the measurement chamber (16) and the second port (12), and that when an expiratory flow passes through the tube-piece a flow is established principally between the third port (14), the measurement chamber (16) and the first port (10). <IMAGE> |
