VORRICHTUNG ZUR ERZEUGUNG EINES KONTINUIERLICHEN, POSITIVEN ATEMWEGDRUCKS (CPAP) MIT HILFE EINES EJEKTIONSVORGANGS WÄHREND DER SPONTANATMUNG.

摘要

PCT No. PCT/SE89/00715 Sec. 371 Date Jul. 23, 1991 Sec. 102(e) Date Jul. 23, 1991 PCT Filed Dec. 6, 1989 PCT Pub. No. WO90/06149 PCT Pub. Date Jun. 14, 1990.A device for generating by ejector action a continuous positive airway pressure (CPAP), comprising a breathing-channel which at one end opens into the atmosphere and at another end is adapted to be provided with an attachment device to the nose and/or mouth of the patient. An inlet channel is connected with the breathing-channel at a point between its ends for fresh gas, the flow of which may be adjusted to obtain an adjustable positive pressure within the breathing-channel. The breathing channel (10) has a first branch-channel (11) which is connectable to the attachment device and a second branch-channel (12) which opens into the atmosphere, the two branch-channels together forming an acute angle (A) of 30 DEG -50 DEG with each other. The inlet channel (13) is situated in the extension of the first branch-channel (11) and is connected to the second branch-channel (12) in such a manner that the stream of fresh gas is directed mainly co-axially into the first branch-channel, producing an ejector action.