发明名称 |
Metabolic gas monitoring apparatus and method |
摘要 |
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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申请公布号 |
US4572208(A) |
申请公布日期 |
1986.02.25 |
申请号 |
US19850745820 |
申请日期 |
1985.06.17 |
申请人 |
UTAH MEDICAL PRODUCTS, INC. |
发明人 |
CUTLER, CHRISTOPHER A.;WALLACE, WILLIAM D.;WESTENSKOW, DWAYNE R. |
分类号 |
A61B5/083;(IPC1-7):A61B5/08 |
主分类号 |
A61B5/083 |
代理机构 |
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地址 |
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