| 摘要 |
PCT No. PCT/GB90/00093 Sec. 371 Date Sep. 23, 1991 Sec. 102(e) Date Sep. 23, 1991 PCT Filed Jan. 23, 1990 PCT Pub. No. WO90/08560 PCT Pub. Date Aug. 9, 1990.Applying suction to the mouthpiece (22) of the fluid extractor creates suction in the uppermost compartment (10) and distends the elastic diaphragm (13) upwardly, which creates suction in the second compartment (11) to cause the suction valve (15) to open and creates suction in the lowermost compartment (12) and in the suction tube (19), whereby mucus from a patient (e.g., a new-born baby) can be drawn through the suction tube (19) into the lowermost compartment (12) as the diaphragm (13) is self-restoring to neutral position, repeated sucking and releasing of the mouthpiece (22) results in a build-up and maintenance of reduced pressure in the lowermost compartment (12) to continue drawing fluid from the patient and discharging of it into that compartment, while the elastic diaphragm (13) also provides a barrier between the mucus and the users mouth and between the users breath and the patient.
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