G - Physics
01
J
324/62, 326/13.6
G01J 3/50 (2006.01) A61B 5/083 (2006.01) G01N 21/01 (2006.01) G01N 21/69 (2006.01) G01N 21/72 (2006.01) G01N 33/48 (2006.01)
Patent
CA 1048610
ABSTRACT A gas analyzer especially for pulmonary use has a frame supporting a centrally mounted radiation chamber having a substantially uniform inside diameter of about 10 to 30 millimeters, having a circular-cylindrical glass wall closed by molybdenum protected aluminum ends connected in an electrical circuit to constitute an anode and a cathode. Leading from a patient's breathing tube is a conduit pass- ing through a regulating valve and axially through the cathode, the conduit having an inside diameter of about 1.52 millimeters. The chamber is subjected to subatmos- pheric pressure through a duct of from about 3.2 to 6.4 milli- meters inside diameter, passing through the anode to a vacuum pump. Arrayed equidistantly from the axis and around the chamber are several radiation detection devices, each connected to a display device. There are individual filters interposed between the chamber and at least some of the de- tecting devices.
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