| 摘要 |
A device for artificial respiration is attached by an unobstructed air duct 10 to the outer end of a flexible endotracheal tube or to a breathing mask. It is provided with a regulating valve 2 which has its inlet side connected to an oxygen supply via an "on-off" time-cycling apparatus of known design, while its outlet side is connected to the air duct 10 through a small-bore tube 14 which extends close and parallel to the air duct wall in the direction towards the mask or the endotracheal tube. Oxygen passing through the small-bore tube 14 into the air duct 10 at great velocity draws air from the outside by injector action and presses it into the lungs of a patient. Upon the end of the "on" part of the cycle the air is expelled by the elasticity of the lungs and of the chest cavity and can freely escape through the unobstructed air duct, which likewise permits the ejection of mucus, blood and other excretions. <IMAGE> |
