| 摘要 |
PCT No. PCT/DE90/00075 Sec. 371 Date Aug. 1, 1991 Sec. 102(e) Date Aug. 1, 1991 PCT Filed Feb. 3, 1990 PCT Pub. No. WO90/08504 PCT Pub. Date Aug. 9, 1990.A vessel is disclosed for receiving exhaled air in order to measure lung function. The vessel includes a container with two facing inlets which admit exhaled air alternatively. The container houses: either a piston which can slide in the direction of the inlets, and switches which are actuated when the position reaches the wall of the container, whereupon air is admitted through the other inlet; or, two contiguous bags to each of which air is admitted by one inlet so that they move alternately, and a switch which when actuated causes air to be admitted through the other inlet.
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