Patient monitor placement indicator
First Claim
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1. A noninvasive medical monitoring device, said monitoring device comprising:
- a physiological sensor configured to output at least one physiological signal; and
a monitor comprising a display and a signal processing system comprising;
a transmittance calculator configured to;
calculate at least one reference transmittance value from said at least one physiological signal, wherein said at least one reference transmittance value is indicative of a reference position of said physiological sensor on a measurement site of a patient, andcalculate at least one operating transmittance value from said at least one physiological signal, wherein said at least one operating transmittance value is indicative of a position of said physiological sensor on said measurement site of said patient;
a placement indication calculator configured to calculate a placement indication value based, at least in part, on said at least one reference transmittance value and said at least one operating transmittance value, wherein said placement indication value is indicative of said position of said physiological sensor on said measurement site relative to said reference position; and
a processing module configured to determine whether said placement indication value exceeds a placement indication threshold.
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Abstract
A monitoring device for measuring one or more physiological parameters of a medical patient can include a finger clip sensor connected to a monitor. A placement indicator helps the patient to properly position the sensor. The monitor can display a message alerting the patient to reposition the sensor. The device can delay measurement until the sensor is properly positioned.
1057 Citations
25 Claims
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1. A noninvasive medical monitoring device, said monitoring device comprising:
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a physiological sensor configured to output at least one physiological signal; and a monitor comprising a display and a signal processing system comprising; a transmittance calculator configured to; calculate at least one reference transmittance value from said at least one physiological signal, wherein said at least one reference transmittance value is indicative of a reference position of said physiological sensor on a measurement site of a patient, and calculate at least one operating transmittance value from said at least one physiological signal, wherein said at least one operating transmittance value is indicative of a position of said physiological sensor on said measurement site of said patient; a placement indication calculator configured to calculate a placement indication value based, at least in part, on said at least one reference transmittance value and said at least one operating transmittance value, wherein said placement indication value is indicative of said position of said physiological sensor on said measurement site relative to said reference position; and a processing module configured to determine whether said placement indication value exceeds a placement indication threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of determining positioning of a sensor, said method comprising:
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calculating at least one reference transmittance value from a first plurality of physiological signals received from a sensor on a measurement site of a patient, wherein said at least one reference transmittance value is indicative of a reference position of said sensor on said measurement site; calculating at least one operating transmittance value from a second plurality of physiological signals received from said sensor, wherein said at least one operating transmittance value is indicative of a current position of said sensor on said measurement site; calculating a placement indication value based, at least in part, on said at least one reference transmittance value and said at least one operating transmittance value; determining whether said placement indication value exceeds a placement indicator threshold; and generating an output on a display based at least in part on said placement indication value when said placement indication value exceeds said placement indicator threshold. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A method of determining positioning of a sensor on a measurement site of a patient, said method comprising:
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calculating a first value from a first set of physiological signal data received from said sensor, wherein said first value is indicative of a first position of said sensor on said measurement site; calculating a second value from a second set of physiological signal data received from said sensor after calculating said first value, wherein said second value is indicative of a second position of said sensor on said measurement site; comparing said first value and said second value; and generating an indicator on a monitor based at least in part on said comparison between said first value and said second value. - View Dependent Claims (18, 19, 20, 21)
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22. A method of determining positioning of a sensor on a measurement site of a patient, said method comprising:
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determining a reference position of said measurement site within said sensor, which comprises calculating a first value from a first set of physiological signal data received from said sensor, wherein in said reference position said sensor is correctly positioned on said measurement site of said patient; determining whether a current position of said sensor is correctly positioned on said measurement site of said patient based, at least in part, on said reference position; and generating instructions for said patient for moving said sensor to said reference position when said sensor is not correctly positioned. - View Dependent Claims (23, 24)
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25. A method of determining positioning of a sensor on a measurement site of a patient, said method comprising:
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determining a reference position of said measurement site within said sensor, wherein in said reference position said sensor is correctly positioned on said measurement site of said patient; determining whether a current position of said sensor is correctly positioned on said measurement site of said patient based, at least in part, on said reference position; generating instructions for said patient for moving said sensor to said reference position when said sensor is not correctly positioned; and updating said instructions until said sensor is positioned within a threshold value associated with said reference position.
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Specification