Pulse oximetry data capture system
First Claim
1. A physiological monitor and data capture system capable of real-time patient monitoring and data acquisition for post-monitoring off-site analysis, the system comprising:
- a sensor having emitters configured to transmit light of at least first and second wavelengths into a fleshy medium and a detector configured 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 receive said intensity signals, generate digitized signals from said intensity signals at a sampling rate, compute physiological parameter data responsive to said digitized signals, and display one or more of said computed physiological parameter data responsive to said intensity signals, or trend data responsive to trends in said computed physiological data or said intensity signals; and
a data storage device integrated with said monitor, said data storage device being configured to record on a removable storage media data at said sampling rate (sampling rate data) and data at a sub-sampling rate (sub-sampling data) using message packets having a format capable of preserving a relationship between the sampling rate data and the sub-sampling rate data, wherein said sampling rate data comprises at least a plethysmograph waveform data and said sub-sampling rate data comprises at least said computed physiological parameter or trend data.
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Accused Products
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.
931 Citations
21 Claims
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1. A physiological monitor and data capture system capable of real-time patient monitoring and data acquisition for post-monitoring off-site analysis, the system comprising:
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a sensor having emitters configured to transmit light of at least first and second wavelengths into a fleshy medium and a detector configured 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 receive said intensity signals, generate digitized signals from said intensity signals at a sampling rate, compute physiological parameter data responsive to said digitized signals, and display one or more of said computed physiological parameter data responsive to said intensity signals, or trend data responsive to trends in said computed physiological data or said intensity signals; and a data storage device integrated with said monitor, said data storage device being configured to record on a removable storage media data at said sampling rate (sampling rate data) and data at a sub-sampling rate (sub-sampling data) using message packets having a format capable of preserving a relationship between the sampling rate data and the sub-sampling rate data, wherein said sampling rate data comprises at least a plethysmograph waveform data and said sub-sampling rate data comprises at least said computed physiological parameter or trend data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of capturing physiological data for post-monitoring off-site analysis, the 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 the sensor signal at a sampling rate; demodulating said digitized sensor signal so as to generate a plethysmograph; calculating at least oxygen saturation and pulse rate from paid plethysmograph; displaying one or more of said plethysmogragh, said oxygen saturation and said pulse rate, each responsive to said intensity signals; and writing data to a removable storage media in message packets having a format capable of preserving a relationship between data segments comprising said plethysmograph at said sampling rate along with said oxygen saturation and said pulse rate at a sub-sampling rate. - View Dependent Claims (15, 16, 17)
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18. A physiological data capture system configured to acquire data for post-monitoring off-site analysis, the 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 receiving said intensity signal and generating a digital plethysmograph signal at a sampling rate; a signal processor receiving said plethysmograph signal, calculating an oxygen saturation and pulse rate, and outputting for display one or more of said plethysmograph signal, calculated oxygen saturation, or pulse rate, each responsive to said intensity signals; a data storage device configured to write said plethysmograph signal, oxygen saturation and pulse rate into message packets having a format capable of preserving a relationship between the plethysmograph signal at the sampling rate with the oxygen saturation and pulse rate data at a sub-sampling rate; a storage media configured to be removably loaded into said data storage device or removed to an off-site location for post-monitoring off-site analysis of the plethysmograph signal, calculated oxygen saturation, and pulse rate data based on data written into the message packets, 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 (19, 20, 21)
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Specification