| 摘要 |
PCT No. PCT/GB90/00871 Sec. 371 Date Jan. 24, 1992 Sec. 102(e) Date Jan. 24, 1992 PCT Filed Jun. 5, 1990 PCT Pub. No. WO90/14853 PCT Pub. Date Dec. 13, 1990.An oscillatory medical ventilator comprises a ventilator duct having one end for attachment to the a patient tube. A gas supply jet is mounted in a bearing block for rotation by an electric motor. The jet has a gas supply passage to which driving or respiratory gas is supplied continuously during rotation of the jet by a gas supply chamber encircling a shaft of the jet and communicating with the passage through radially extending openings in the wall of the shaft. A cyclically varying pressure at one end of the ventilator duct is thus produced upon rotation of the jet to cause alternating inflation and deflation of the lungs with respiratory gas which is supplied either by the jet or an independent source connected to the patient tube. |
