| 摘要 |
1. Lung ventilation examination apparatus using radioactive aerosols characterized in that it comprises a protected housing including - a spray (11) of radioactive liquids, which is connected, on the one hand, to an external pressurized air source (12) and on the other hand, to a delivery pipe which supplies the aerosol formed in the spray (11) to an adapter (13) for inspiring and expiring ; - aerosol sedimentation zones (1, 2), said zones being connected to said delivery pipe, between the spray (11) and the adapter (13) ; - a conduct starting from the adapter (13), intended for transfering the expired air to the outside ; - an expired air reception means (3) disposed on the downstream side of the adapter (13) and on the upstream side of a pump (14) intended for blowing-off of the expired air reception means (3) and for the discharge of the residues contained in the zones for sedimentation (1, 2) of the aerosol, after the end of the test ; - a series of valves (4, 5, 6, 7, 8, 9, 10, 10') having a small size reduction and being placed on upstreamside, on downstreamside and on the branch-line of each sedimentation zone of the inspiratory circuit and on upstream side of the expired air reception means (3), allowing a selective sequential access to each part of the apparatus, particularly to each aerosol sedimentation zone (1, 2) and to the expired air reception means (3), during the different operating stages.
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