| 摘要 |
A respiratory device 10 comprises a body 12 defining an internal space having an inlet 14, an outlet 16, a monitoring port 20 with a valve 22 biased to a normally closed position, and a filter assembly 18 between the inlet and outlet ports. The valve 22 may have a pivotally hinged valve member 38 openable against the closing force of a biasing element 40 by an inserted tube such as a Luer tip 32 which may be sealed within the port by a seal 46. Various alternative types of one-way valves are also disclosed, including resiliently flexible blocking elements (28, fig 3a), which may additionally comprise tensioning elements (36, fig 4a) or a poppet-type arrangement (fig 6a). |
