Surgery – Truss – Pad
Patent
1985-06-17
1986-02-25
Coven, Edward M.
Surgery
Truss
Pad
128719, A61B 508
Patent
active
045722080
ABSTRACT:
Metabolic gas monitoring apparatus and methods for measuring the metabolic rate in patients. The apparatus includes separate inlets for a calibration gas, inspired gas, and expired gas, and means for alternately introducing each gaseous sample into a thermoelectric cooler. The cooler is configured with relatively narrow passageways so as to contain a minimal amount of gaseous volume therein and thus provides for a more dynamic response time and for more accurate measurements. The apparatus further includes a carbon dioxide sensor and an oxygen sensor for measuring the concentration of carbon dioxide and oxygen, respectively, in the gaseous samples, and a microprocessor for comparing the measured concentrations of carbon dioxide and oxygen in the inspired gas and expired gas and for calculating the metabolic rate. Preferably, the oxygen sensor has a zirconium oxide differential electrode and a substantially equal pressure is maintained in a sample chamber and a reference chamber of the oxygen sensor.
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Cutler Christopher A.
Wallace William D.
Westenskow Dwayne R.
Coven Edward M.
Hindenburg Max F.
Utah Medical Products, Inc.
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