| 摘要 |
PCT No. PCT/GB95/01248 Sec. 371 Date Apr. 10, 1997 Sec. 102(e) Date Apr. 10, 1997 PCT Filed May 31, 1995 PCT Pub. No. WO95/32753 PCT Pub. Date Dec. 7, 1995Ventilator apparatus for ventilating the lungs of a patient comprises a source of as pressure to be applied internally or externally to a patient's lungs. The alternating pressure has a complex waveform deconstructable into a large amplitude waveform of a first frequency which may be produced by a blower (18) and a valve (10) and a lower amplitude waveform of a higher frequency which may be produced by a second blower and valve unit (4). |
