OXIMETER PROBE OFF INDICATOR DEFINING PROBE OFF SPACE
First Claim
1. A method of determining that an optical probe is not properly positioned with respect to a measurement site on a patient, the method comprising:
- receiving probe off data responsive to signals normally responsive to light attenuated by body tissue at said measurement site of said patient, however, said signals being received during known probe off conditions;
defining a probe off space from analysis of said probe off data, said probe off space being multi-dimensional and separate from multi-dimensional data space representing valid parameter data; and
storing data representative of said probe off space on memory of one of a patient monitor and a noninvasive oximeter sensor.
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Abstract
An embodiment of the present disclosure seeks to select characteristics of incoming intensity data that cause comparisons of selected characteristics to produce defined probe off space having reduced crossover with defined probe on space. Once defined, the present disclosure compares characteristics of incoming intensity data with the now defined probe off space, and in some embodiments, defined probe on space, to determine whether a probe off condition exists. When a processor determines a probe off condition exists, the processor may output or trigger an output signal that audibly and/or visually indicates to a user that the optical sensor should be adjusted for a proper application to a measurement site.
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Citations
12 Claims
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1. A method of determining that an optical probe is not properly positioned with respect to a measurement site on a patient, the method comprising:
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receiving probe off data responsive to signals normally responsive to light attenuated by body tissue at said measurement site of said patient, however, said signals being received during known probe off conditions; defining a probe off space from analysis of said probe off data, said probe off space being multi-dimensional and separate from multi-dimensional data space representing valid parameter data; and storing data representative of said probe off space on memory of one of a patient monitor and a noninvasive oximeter sensor. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A patient monitor comprising:
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an input receiving data responsive to light attenuated by body tissue, wherein the light comprises light emitted at at least two of emission centroids ranging from about 605 nm to about 614 nm, from about 615 nm to about 624 nm, from about 625 nm to about 635 nm, from about 655 nm to about 665 nm, from about 690 nm to about 710 nm, from about 720 nm to about 740 nm, from about 785 nm to about 825 nm, and from 875 nm to about 935 nm; a memory storing probe off data corresponding to probe off space, wherein at least some of said probe off space corresponds to data acquired during known probe off conditions; and a processor programmed to compare incoming data with the probe off data to determine an occurrence of a probe off condition, and programmed to output a probe off indication upon determination of said occurrence. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification