DEVICE FOR FORMING PHYSIOLOGICALLY ACTIVE RESPIRATORY MEDIUM FROM EXHALED AND ATMOSPHERE AIR Russian patent published in 2002 - IPC

FIELD: medical engineering. SUBSTANCE: device has breathing tube connected to internal chamber having solid bottom, lateral openings in the lower part, means for changing lumen cross-section area. The chamber is placed into the middle reservoir closed with cover having at least one opening for communicating with the surrounding atmosphere. The device also has means for separating a part of the external reservoir volume. The means for separating a part of the external reservoir volume have at least one cylindrical cup mounted with its bottom up on the external reservoir bottom. EFFECT: quick switching to form respiratory medium of various concentrations. 6 cl, 18 dwg