| 摘要 |
<p>OF TH? D??CLOSURE: Respiration apparatus, for anaesthetist's use, to minimise gas consumption by providing for a patient to rebreath deadspace gas (i.e. the gas previously present in the tr?cher, mouth and bronchial tree and which are not previously undergone change) comprises a housing enclosing an expansible container to which fresh gas is supplied by a fresh gas supply duct and also to the housing outside the container by way of a non-return valve which permits flow only from the respiration tube into the housing, adjustment means being provided to permit adjustment of the extent by which the container may expand.</p> |
