High-speed transmission of blood stream gases

Details High-speed transmission of blood stream gases High-speed transmission of blood stream gases

A - Human Necessities

61

B

73/103, 150/11

A61B 5/00 (2006.01) G01N 33/49 (2006.01) H01J 49/04 (2006.01)

Patent

CA 1127519

ABSTRACT OF THE DISCLOSURE The various gases in the blood stream are analyzed by a mass spectrometer coupled to the catheter having on its distal end a membrane that passes the gases but not the blood. A "carrier" gas, such as helium, introduced under a small pressure through a small tube within the catheter lumen and into the area behind the membrane will produce a viscous flow that greatly speeds the gases to the mass spectrometer. The carrier gas is extracted prior to its arrival at the mass spectrometer.

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