发明名称 |
Apparatus and method for non-invasively measuring cardiac output |
摘要 |
Apparatus and methods for non-invasively determining the cardiac output or pulmonary capillary blood flow of a patient using partial re-breathing techniques. The apparatus includes a substantially instantaneously adjustable deadspace volume for accommodating differences in sizes or breathing capacities of various patients. The apparatus may be constructed of inexpensive elements, including one or more two-way valves, which render the apparatus very simple to use and inexpensive so that the unit may be employed as a disposable product. The method of the invention includes estimating the cardiac output or pulmonary capillary blood flow of a patient based on partial pressure of alveolar CO2 rather than on the partial pressure of end tidal CO2, as previously practiced. A computer program for calculating the cardiac output or pulmonary capillary blood flow of a patient is also disclosed.
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申请公布号 |
US6227196(B1) |
申请公布日期 |
2001.05.08 |
申请号 |
US19990262510 |
申请日期 |
1999.03.02 |
申请人 |
NTC TECHNOLOGY INC. |
发明人 |
JAFFE MICHAEL B.;ORR JOSEPH A.;KOFOED SCOTT A.;WESTENSKOW DWAYNE |
分类号 |
A61B5/026;A61B5/08;A61B5/083;A61B5/087;A61B5/097;A61B10/00;A61M16/00;(IPC1-7):A61M16/00 |
主分类号 |
A61B5/026 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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