发明名称 |
MOTION COMPATIBLE SENSOR FOR NON-INVASIVE OPTICAL BLOOD ANALYSIS |
摘要 |
A non-invasive optical sensor which uses the motion signal to calculate the physiological characteristic being measured. For pulse oximetry, a least squares or a ratio-of-ratios technique can be applied to the motion signal itself. This is made possible by selecting a site on the patient where variations in motion produce signals of two wavelengths which are sufficiently correlated. In particular, it has been determined that a sensor placed on a nail, in particular a thumbnail, exhibits the characteristics of having the red and infrared signals correlated when used for pulse oximetry, and the resulting signals correlate to arterial oxygen saturation. |
申请公布号 |
WO9815224(A3) |
申请公布日期 |
1998.06.25 |
申请号 |
WO1997US17818 |
申请日期 |
1997.10.02 |
申请人 |
NELLCOR PURITAN BENNETT INCORPORATED |
发明人 |
CHIN, RODNEY;MANNHEIMER, PAUL;FLEWELLING, ROSS |
分类号 |
A61B5/145;A61B5/00;A61B5/1455;A61B5/1464;A61B5/1495 |
主分类号 |
A61B5/145 |
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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