| 摘要 |
Portable mechanical ventilating apparatus comprising a hollow, flexible dome 2 mounted on a base 3 forming a gastight chamber for containment of breathable gas which is manually compressible to expel the gas into a patient's lungs. Preferably a flexible bellows 4 is mounted on the base 3 inside the dome 2 forming one cavity 5 within the bellows 4 and another cavity between the bellows 4 and dome 2. The bellows 4 may move independently from the dome 2 and may contain a recoil device 6, preferably in the form of a spring to return it to the extended position. The bellows 4 and spring 6 may also be depressed by a pressurised driving gas 10 entering the cavity between the bellows 4 and dome 2. The dome 2 may be transparent and may include a handle for manual compression and a shoulder strap. |
