Patents by Inventor James Ochs
James Ochs has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8571621Abstract: Methods and systems are provided for filtering a pulse oximetry signal without making assumptions on the noise statistics of the signal. A pulse oximeter may receive an energy signal proportional to an amount of light detected at the sensor. The energy signal may be converted and digitally processed to estimate physiological data. The pulse oximeter may include a processor configured to execute H? filtering algorithms to estimate physiological data without requiring the variances and/or distributions of measurement and process noise in the signal. In one or more embodiments, the pulse oximeter may also be configured to execute other filtering algorithms which update H? filtering algorithms based on the pulse oximetry signal.Type: GrantFiled: June 24, 2010Date of Patent: October 29, 2013Assignee: Covidien LPInventors: Paul F. Stetson, James Ochs
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Publication number: 20130267805Abstract: Embodiments described herein may include systems and methods for detecting events that may be associated with sleep apnea. Some embodiments are directed to a system and/or method for automated detection of reduction in airflow events using polysomnograph signals, wherein the reduction in airflow events may relate to sleep apnea. The PSG signals may be limited to four signals, including data from an airflow channel, a blood oxygen saturation channel, a chest movement channel, and an abdomen movement channel. Using information from these channels, some embodiments may automatically identify reduction in airflow events.Type: ApplicationFiled: March 13, 2013Publication date: October 10, 2013Applicant: Covidien LPInventors: James Ochs, Keith Batchelder, Yu-Jung Pinto
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Patent number: 8515513Abstract: Present embodiments are directed to a system and method capable of detecting and graphically indicating physiologic patterns in patient data. For example, present embodiments may include a monitoring system that includes a monitor capable of receiving input relating to patient physiological parameters and providing indications or alarms related to oxygen saturation declines and oxygen desaturation patterns associated with sleep apnea. Present embodiments may include methods and systems for mediating between alarms and other indicators associated with oxygen desaturation and ventilatory instability.Type: GrantFiled: October 30, 2009Date of Patent: August 20, 2013Assignee: Covidien LPInventors: Keith Batchelder, Scott Amundson, James Ochs, Paul Mannheimer
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Publication number: 20130172686Abstract: A patient monitoring system may receive a physiological signal having gap portions in the received data. The gap portions may be identified and a plurality of morphology metric signals may be modified based on the identified gap portions. The morphology metric signals may be modified based on the identified gaps, and a combined autocorrelation sequence may be generated based on the modified morphology metric signals. The combined autocorrelation sequence may be used to determine physiological information.Type: ApplicationFiled: January 4, 2012Publication date: July 4, 2013Applicant: Nellcor Puritan Bennett IrelandInventors: Paul S. Addison, James Dripps, James Ochs, James Watson
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Publication number: 20130172767Abstract: A patient monitoring system may receive a physiological signal such as a photoplethysmograph (PPG) signal that exhibits frequency and amplitude modulation based on respiration. A phase locked loop may generate a frequency demodulated signal and an amplitude demodulated signal from the PPG signal. An autocorrelation sequence may be generated for each of the frequency demodulated signal and the amplitude demodulated signal. The autocorrelation sequences may be combined and respiration information may be determined based on the combined autocorrelation sequence.Type: ApplicationFiled: January 4, 2012Publication date: July 4, 2013Applicant: Nellcor Puritan Bennett IrelandInventors: James Dripps, James Ochs, Paul S. Addison
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Publication number: 20130138002Abstract: Arrhythmia may impact the determination of physiological information from a physiological signal. A patient monitoring system may detect the presence of arrhythmia based on changes in the physiological signal. Derived value data sets may be extracted from the physiological signal and calculations performed to generate arrhythmia features. The arrhythmia features may be used to generate an arrhythmia indicator that may indicate the presence of arrhythmia in the physiological signal.Type: ApplicationFiled: November 30, 2011Publication date: May 30, 2013Applicant: Nellcor Puritan Bennett LLCInventors: Binwei Weng, James Ochs
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Publication number: 20130137936Abstract: A patient monitoring system may generate an autocorrelation sequence for a physiological signal such as a photoplethysmograph signal. A series of peak values may be identified for the autocorrelation sequence. The peak values may be modified based on a historical distribution of a physiological parameter. A physiological parameter such as respiration rate may be determined based on the modified peak values.Type: ApplicationFiled: November 30, 2011Publication date: May 30, 2013Applicant: Nellcor Puritan Bennett IrelandInventors: Clark R. Baker, JR., James Ochs, James H. Dripps, Paul S. Addison
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Publication number: 20130079606Abstract: A patient monitoring system may receive a photoplethysmograph (PPG) signal including samples of a pulse waveform. The PPG signal may demonstrate morphology changes based on respiration. The system may calculate morphology metrics from the PPG signal, the first derivative of the PPG signal, the second derivative of the PPG signal, or any combination thereof. The morphology metrics may demonstrate amplitude modulation, baseline modulation, and frequency modulation of the PPG signal that is related to respiration. Morphology metric signals generated from the morphology metrics may be used to determine respiration information such as respiration rate.Type: ApplicationFiled: September 23, 2011Publication date: March 28, 2013Applicant: Nellcor Puritan Bennett IrelandInventors: Scott McGonigle, Paul S. Addison, James Ochs, James Watson
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Publication number: 20130079657Abstract: A signal representing physiological information may include information related to respiration. A patient monitoring system may utilize a wavelet transform to generate a scalogram from the signal. A threshold for the scalogram may be calculated, and scalogram values may be compared to the threshold. One of the scales meeting the threshold may be selected as representing respiration information such as respiration rate. The respiration information may be determined based on the selected scale.Type: ApplicationFiled: September 23, 2011Publication date: March 28, 2013Applicant: Nellcor Puritan Bennett IrelandInventors: James Ochs, James Watson, Binwel Weng, Paul S. Addison, Scott McGonigle
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Publication number: 20130079656Abstract: A signal representing physiological information may include information related to respiration. A patient monitoring system may generate a plurality of autocorrelation sequences from the signal and combine the autocorrelation sequences to generate a combined autocorrelation sequence. The combined autocorrelation sequence may be analyzed to identify one or more peaks that may correspond to respiration information. Respiration information such as respiration rate may be determined based on the one or more peaks.Type: ApplicationFiled: September 23, 2011Publication date: March 28, 2013Applicant: Nellcor Puritan Bennett IrelandInventors: Jimmy Dripps, James Ochs, Paul S. Addison, James Watson
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Publication number: 20130080489Abstract: A patient monitoring system may receive a photoplethysmograph (PPG) signal including samples of a pulse waveform. A plurality of morphology metric signals may be generated from the PPG signal. The system may generate an autocorrelation sequence for each of the morphology metric signals. An autocorrelation metric may be generated from each of the autocorrelation sequences and may represent the regularity or periodicity of the morphology metric signal. The autocorrelation sequences may be combined to generate a combined autocorrelation sequence, with the weighting of the autocorrelation sequences based on the autocorrelation metric. The combined autocorrelation sequence may be used to determine physiological information.Type: ApplicationFiled: September 23, 2011Publication date: March 28, 2013Applicant: Nellcor Puritan Bennett IrelandInventors: James Ochs, Paul S. Addison, James Watson
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Patent number: 8398555Abstract: Embodiments described herein may include systems and methods for detecting events that may be associated with sleep apnea. Some embodiments are directed to a system and/or method for automated detection of reduction in airflow events using polysomnograph signals, wherein the reduction in airflow events may relate to sleep apnea. The PSG signals may be limited to four signals, including data from an airflow channel, a blood oxygen saturation channel, a chest movement channel, and an abdomen movement channel. Using information from these channels, some embodiments may automatically identify reduction in airflow events.Type: GrantFiled: September 10, 2008Date of Patent: March 19, 2013Assignee: Covidien LPInventors: James Ochs, Keith Batchelder, Yu-Jung Pinto
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Publication number: 20130066176Abstract: Methods and systems are discussed for determining venous oxygen saturation by calculating a ratio of ratios from respiration-induced baseline modulations. A calculated venous ratio of ratios may be compared with a look-up table value to estimate venous oxygen saturation. A calculated venous ratio of ratios is compared with an arterial ratio of ratios to determine whether baseline modulations are the result of a subject's respiration or movement. Such a determination is also made by deriving a venous ratio of ratios using a transform technique, such as a continuous wavelet transform. Derived venous and arterial saturation values are used to non-invasively determine a cardiac output of the subject.Type: ApplicationFiled: September 9, 2011Publication date: March 14, 2013Applicant: Nellcor Puritan Bennett IrelandInventors: Paul Addison, James Watson, James Ochs
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Publication number: 20130066174Abstract: Methods and systems are discussed for determining venous oxygen saturation by calculating a ratio of ratios from respiration-induced baseline modulations. A calculated venous ratio of ratios may be compared with a look-up table value to estimate venous oxygen saturation. A calculated venous ratio of ratios is compared with an arterial ratio of ratios to determine whether baseline modulations are the result of a subject's respiration or movement. Such a determination is also made by deriving a venous ratio of ratios using a transform technique, such as a continuous wavelet transform. Derived venous and arterial saturation values are used to non-invasively determine a cardiac output of the subject.Type: ApplicationFiled: September 9, 2011Publication date: March 14, 2013Applicant: Nellcor Puritan Bennett IrelandInventors: Paul S. Addison, James Watson, James Ochs, Scott McGonigle
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Publication number: 20130024123Abstract: A patient monitoring system may be configured to use template matching in determining physiological parameters. A physiological signal may be monitored, and a wavelet transform may be performed. The wavelet transform, or parameters derived thereof such as energy distribution or relative phase difference, may be compared with one or more templates using template matching. Templates may be based on, for example, physiological data, mathematical models, or look-up tables, and may be pre-computed and stored. Physiological parameters may be determined based on the template matching results. Scale variability, confidence metrics, or both, may be used to aid in determining the physiological parameter.Type: ApplicationFiled: July 21, 2011Publication date: January 24, 2013Applicant: Nellcor Puritan Bennett IrelandInventors: James Ochs, Paul Addison, James Watson
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Publication number: 20130007083Abstract: Methods and systems are disclosed for computing one or more continuous wavelet transforms on a dedicated integrated circuit. The systems comprise an integrated circuit having a receiver, memory, and processing circuitry. The receiver receives input data corresponding to an input signal. The memory stores information corresponding to one or more wavelet functions scaled over a set of scales. The processing circuitry is configured to compute, in-parallel, various portions of a single continuous wavelet transform of the input signal based on the received input data and the stored information corresponding to a single wavelet function computed over a set of scales.Type: ApplicationFiled: June 30, 2011Publication date: January 3, 2013Applicant: Nellcor Puritan Bennett IrelandInventors: Peter Galen, James Ochs, James Watson, Tom Wilmering, Paul Addison
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Publication number: 20120330565Abstract: Embodiments disclosed herein may include systems and methods for evaluating physiological parameter data. Embodiments of methods may include monitoring a patient to produce a signal comprising a sequence of numerical values for a physiological parameter over a time period, calculating an index from the signal, comparing the index to a reported index, and if the index is greater than the reported index, setting the reported index to the value of the index. Embodiments of methods may include calculating a modulation of the signal, comparing the modulation to a previous valise of the modulation to identity a trend in the modulation and if the trend corresponds to an undesirable condition, using a first function, to increase the reported index. Embodiments of methods may include providing an indication of a physiological status based on the reported index.Type: ApplicationFiled: September 6, 2012Publication date: December 27, 2012Applicant: Nellcor Puritan Bennett LLCInventors: James Ochs, Scott Amundson, Keith Batchelder
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Patent number: 8310717Abstract: A method for identifying one or more spot colors in a full color multi-bit image data, and processing the identified spot colors for output on an image printing system is provided. The method includes inputting the full color image data, wherein the full color image data includes a plurality of pixels; analyzing the inputted image to identify the pixels with a spot color from the pixels with a non-spot color, wherein each pixel with a spot color is within a predetermined threshold from a desired color value; processing the identified spot color pixels; and combining the processed spot color pixels with non-spot color pixels to form a data structure.Type: GrantFiled: January 16, 2009Date of Patent: November 13, 2012Assignee: Xerox CorporationInventors: Matthew James Ochs, John Allott Moore
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Patent number: 8275553Abstract: Embodiments disclosed herein may include systems and methods for evaluating physiological parameter data. Embodiments of methods may include monitoring a patient to produce a signal comprising a sequence of numerical values for a physiological parameter over a time period, calculating an index from the signal, comparing the index to a reported index, and if the index is greater than the reported index, setting the reported index to the value of the index. Embodiments of methods may include calculating a modulation of the signal, comparing the modulation to a previous value of the modulation to identify a trend in the modulation and if the trend corresponds to an undesirable condition, using a first function to increase the reported index. Embodiments of methods may include providing an indication of a physiological status based on the reported index.Type: GrantFiled: February 18, 2009Date of Patent: September 25, 2012Assignee: Nellcor Puritan Bennett LLCInventors: James Ochs, Scott Amundson, Keith Batchelder
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Publication number: 20120220846Abstract: Various embodiments may provide methods and systems capable of evaluating physiological parameter data. The methods and systems may include monitoring a patient to produce a signal comprising a sequence of numerical values for blood oxygen saturation over a time period. The signal may be analyzed to identify two or more desaturation patterns within the time period, and at least two numerical differences are calculated between the desaturation patterns. A saturation pattern detection index may be calculated using the numerical differences between the desaturation patterns. The saturation pattern detection index may be used to provide an indication of a physiological condition. Other embodiments may provide a medical device that may be used to evaluate physical parameter data according to the techniques described.Type: ApplicationFiled: March 15, 2012Publication date: August 30, 2012Applicant: NELLCOR PURITAN BENNETT LLCInventors: James Ochs, Scott Amundson, Keith Batchelder, Paul Mannheimer