Yes, at one time there were no automated single-breath DLCO systems and patients were stepped through the maneuver manually. Unseen is the opening for the patient mouthpiece on the back of the valve. The opening on the left was for the rubber alveolar sample bag. From the 1982 Collins Supply Catalog.
Category Archives: 1980s
Valve, Collins Free-Breathing with Bypass, Large, 1982
From the 1982 Collins Supply Catalog.
Valve, Collins Free-Breathing with Bypass, Small, 1982
From the 1982 Collins Supply Catalog.
Valve, Collins T-Stopcock, 1982
From the 1982 Collins Supply Catalog.
Valve, Collins Low-turbulence Y valve, 1982
From the 1982 Collins supply catalog.
Valve, Hans Rudolph, 1982
From the 1982 Collins supply catalog.
Valve, Collins Otis-McKerrow, 1982
From the 1982 Collins supply catalog.
Valve, Collins High Velocity, Low Resistance, 1982
From the 1982 Collins Supply catalog.
Valve, Collins Lloyd Valve, 1982
From the Collins 1982 Supply catalog.
Valve, Collins High-Velocity J-Valve, 1982
From the 1982 Collins Supply Catalog.