Endotracheal tube and mass spectrometer

Details Endotracheal tube and mass spectrometer Endotracheal tube and mass spectrometer

A - Human Necessities

61

B

128/100, 73/104,

A61B 5/08 (2006.01) A61B 5/0205 (2006.01) A61B 5/029 (2006.01) A61B 5/04 (2006.01) G01N 33/497 (2006.01) A61M 16/04 (2006.01)

Patent

CA 1311566

ABSTRACT OF DISCLOSURE A non-invasive apparatus for continuously measur- ing the cardiac output and cardio-respiratory function includes a gas sampling device which is inserted into the mouth of a human subject. The gas sampling device may be a disposable endotracheal tube or a smaller disposable mouthpiece. Each of these gas sampling devices is provided with a plurality of passages for sampling the lung gases and for continuously sampling the gas pressure on opposite sides of a capillary restriction member. A miniature motor pump mass spec- trometer module is mounted on the upper end of the endotracheal tube or mouthpiece. Electronic circuitry connected to the mass spectrometer permits constant visual monitoring of the cardiac output and cardio- respiratory function.

602503

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