| 摘要 |
A ventilator for inflating a patients lung comprising a dome 2, with a handle 9, mounted on a flexible support such as bellows or concentric rings 3 with a second bellows 10 and spring 11 mounted inside the dome connected to a pneumatic control unit (30, Fig 3), such that intermittent positive pressure ventilation can be administered to a patient either by passing compressed air from the pneumatic control to the interior of the dome to depress the internal bellows or else manually moving the dome up and down on the flexible support. The device can be used to ventilate a patient both in the conventional manner by compressing a bellows mounted inside a dome as well as at the beginning or end of mechanical ventilation or in case of failure of the compressed gas supply, by manually elevating and depressing the dome. |
