Endotracheal tube and mass spectrometer

Details Endotracheal tube and mass spectrometer Endotracheal tube and mass spectrometer

1989-04-07

1991-08-27

Anderson, Bruce C.

Radiant energy

Ionic separation or analysis

Cyclically varying ion selecting field means

250427, 250281, B01D 5944, H01J 4900

Patent

active

050435760

ABSTRACT:
A non-invasive apparatus for continuously measuring 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 spectrometer 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.

REFERENCES:
patent: 2847574 (1958-08-01), Donner
patent: 2894136 (1959-07-01), Reimecke
patent: 3233098 (1966-02-01), Reich
patent: 3318149 (1967-05-01), Varadi
patent: 3761708 (1973-09-01), Roepke et al.
patent: 3842269 (1974-10-01), Liebl et al.

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