Pulse oximetry data capture system
First Claim
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1. A data capture system comprising:
- a sensor having emitters adapted to transmit light of at least first and second wavelengths into a fleshy medium and a detector adapted to generate at least first and second intensity signals in response to receiving light after absorption by constituents of pulsatile blood flowing within the fleshy medium;
a monitor configured to input said intensity signals, generate digitized signals from said intensity signals at a sampling rate and compute at least one physiological parameter responsive to magnitudes of said digitized signals; and
a data storage device integrated with said monitor, said data storage device being adapted to record data derived from said digitized signals on a removable storage media at said sampling rate.
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Abstract
A data capture system utilizes a sensor with emitters adapted to transmit light into a fleshy medium and a detector adapted to generate intensity signals in response to receiving light after absorption by the fleshy medium. A monitor is configured to input the intensity signals, generate digitized signals from the intensity signals at a sampling rate and compute at least one physiological parameter responsive to magnitudes of the digitized signals. A data storage device is integrated with the monitor and is adapted to record data derived from the digitized signals on a removable storage media at the sampling rate.
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Citations
14 Claims
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1. A data capture system comprising:
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a sensor having emitters adapted to transmit light of at least first and second wavelengths into a fleshy medium and a detector adapted to generate at least first and second intensity signals in response to receiving light after absorption by constituents of pulsatile blood flowing within the fleshy medium;
a monitor configured to input said intensity signals, generate digitized signals from said intensity signals at a sampling rate and compute at least one physiological parameter responsive to magnitudes of said digitized signals; and
a data storage device integrated with said monitor, said data storage device being adapted to record data derived from said digitized signals on a removable storage media at said sampling rate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A data capture method comprising the steps of:
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emitting light of at least first and second wavelengths;
detecting said light after absorption by a fleshy medium site so as to generate a corresponding sensor signal;
digitizing at a sampling rate;
demodulating said sensor signal so as to generate a plethysmograph;
calculating at least oxygen saturation and pulse rate from said plethysmograph; and
writing data to a removable storage media, said data comprising said plethysmograph at said sampling frequency along with said oxygen saturation and said pulse rate at a sub-sampling frequency. - View Dependent Claims (10, 11)
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12. A data capture system comprising:
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a sensor adapted to generate an intensity signal responsive to light absorption by constituents of pulsatile blood flowing within a fleshy medium;
a digitizer inputting said intensity signal and generating a digital plethysmograph signal at a sampling rate;
a signal processor inputting said plethysmograph and calculating an oxygen saturation and pulse rate;
a data storage device inputting said plethysmograph, oxygen saturation and pulse rate;
a storage media configured to removably load into said data storage device, said data storage device writing said plethymograph to said storage media at said sampling rate, along with said oxygen saturation and said pulse rate at a sub-sampling rate. - View Dependent Claims (13, 14)
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Specification