Patents by Inventor Paul Stanley Addison

Paul Stanley Addison 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).

  • Patent number: 11096588
    Abstract: A method for monitoring autoregulation includes, using a processor, receiving a blood pressure signal an oxygen saturation signal, and a regional oxygen saturation signal from a patient. The method also includes normalizing the regional oxygen saturation signal to correct for variation in the oxygen saturation signal based on a relationship between the oxygen saturation signal and the regional oxygen saturation signal. The method further includes determining a linear correlation between the blood pressure signal and the normalized regional oxygen saturation signal. The method still further includes providing a signal indicative of the patient's autoregulation status to an output device based on the linear correlation.
    Type: Grant
    Filed: October 5, 2016
    Date of Patent: August 24, 2021
    Assignee: Covidien LP
    Inventors: Paul Stanley Addison, James N. Watson, Dean Montgomery
  • Publication number: 20200345270
    Abstract: Methods, systems, and devices for measuring respiratory parameters from an ECG device are described. The method may include receiving an electrocardiogram (ECG) signal associated with a patient. The method may further include detecting a change in modulation of the ECG signal between a first portion of the ECG signal and a second portion of the ECG signal. The method may further include determining a change in respiratory effort of the patient based at least in part on the change in modulation.
    Type: Application
    Filed: July 22, 2020
    Publication date: November 5, 2020
    Inventors: PAUL STANLEY ADDISON, Daniel Wayne Bartlett, James N. Watson
  • Patent number: 10765344
    Abstract: Methods, systems, and devices for measuring respiratory parameters from an ECG device are described. The method may include receiving an electrocardiogram (ECG) signal associated with a patient. The method may further include detecting a change in modulation of the ECG signal between a first portion of the ECG signal and a second portion of the ECG signal. The method may further include determining a change in respiratory effort of the patient based at least in part on the change in modulation.
    Type: Grant
    Filed: November 2, 2017
    Date of Patent: September 8, 2020
    Assignee: Covidien LP
    Inventors: Paul Stanley Addison, Daniel Wayne Bartlett, James N. Watson
  • Publication number: 20200268281
    Abstract: The present invention relates to the field of medical monitoring, and in particular non-contact, video-based monitoring of pulse rate, respiration rate, motion, and oxygen saturation. Systems and methods are described for capturing images of a patient, producing intensity signals from the images, filtering those signals to focus on a physiologic component, and measuring a vital sign from the filtered signals. Examples include flood fill methods and skin tone filtering methods.
    Type: Application
    Filed: May 14, 2020
    Publication date: August 27, 2020
    Inventors: Dominique Jacquel, Paul Stanley Addison, David Foo
  • Patent number: 10667723
    Abstract: The present invention relates to the field of medical monitoring, and in particular non-contact, video-based monitoring of pulse rate, respiration rate, motion, and oxygen saturation. Systems and methods are described for capturing images of a patient, producing intensity signals from the images, filtering those signals to focus on a physiologic component, and measuring a vital sign from the filtered signals. Examples include flood fill methods and skin tone filtering methods.
    Type: Grant
    Filed: February 14, 2017
    Date of Patent: June 2, 2020
    Assignee: COVIDIEN LP
    Inventors: Dominique Jacquel, Paul Stanley Addison, David Foo
  • Publication number: 20200069195
    Abstract: A method for monitoring autoregulation includes, using a processor, using a processor to execute one or more routines on a memory. The one or more routines include receiving one or more physiological signals from a patient, determining a correlation-based measure indicative of the patient's autoregulation based on the one or more physiological signals, and generating an autoregulation profile of the patient based on autoregulation index values of the correlation-based measure. The autoregulation profile includes the autoregulation index values sorted into bins corresponding to different blood pressure ranges. The one or more routines also include designating a blood pressure range encompassing one or more of the bins as a blood pressure safe zone indicative of intact regulation and providing a signal to a display to display the autoregulation profile and a first indicator of the blood pressure safe zone.
    Type: Application
    Filed: November 6, 2019
    Publication date: March 5, 2020
    Inventors: Paul Stanley Addison, James N. Watson, Dean Montgomery
  • Patent number: 10568526
    Abstract: A combined physiological sensor and methods for detecting one or more physiological characteristics of a subject are provided. The combined sensor (e.g., a forehead sensor) may be used to detect and/or calculate at least one of a pulse blood oxygen saturation level, a regional blood oxygen saturation level, a respiration rate, blood pressure, an electrical physiological signal (EPS), a pulse transit time (PTT), body temperature associated with the subject, a depth of consciousness (DOC) measurement, any other suitable physiological parameter, and any suitable combination thereof. The combined sensor may include a variety of individual sensors, such as electrodes, optical detectors, optical emitters, temperature sensors, and/or other suitable sensors. The sensors may be advantageously positioned in accordance with a number of different geometries.
    Type: Grant
    Filed: September 21, 2015
    Date of Patent: February 25, 2020
    Assignee: Covidien LP
    Inventors: Edward M. McKenna, Bo Chen, Youzhi Li, Paul Stanley Addison
  • Publication number: 20200022590
    Abstract: A PPG system for determining a stroke volume of a patient includes a PPG sensor configured to be secured to an anatomical portion of the patient. The PPG sensor is configured to sense a physiological characteristic of the patient. The PPG system may include a monitor operatively connected to the PPG sensor. The monitor receives a PPG signal from the PPG sensor. The monitor includes a pulse trending module determining a slope transit time of an upslope of a primary peak of the PPG signal. The pulse trending module determines a stroke volume of the patient as a function of the slope transit time.
    Type: Application
    Filed: September 30, 2019
    Publication date: January 23, 2020
    Inventors: Paul Stanley Addison, James Nicholas Watson
  • Publication number: 20190380599
    Abstract: The present invention relates to the field of medical monitoring, and in particular non-contact monitoring of one or more physiological parameters in a region of a patient during surgery. Systems, methods, and computer readable media are described for generating a pulsation field and/or a pulsation strength field of a region of interest (ROI) in a patient across a field of view of an image capture device, such as a video camera. The pulsation field and/or the pulsation strength field can be generated from changes in light intensities and/or colors of pixels in a video sequence captured by the image capture device. The pulsation field and/or the pulsation strength field can be combined with indocyanine green (ICG) information regarding ICG dye injected into the patient to identify sites where blood flow has decreased and/or ceased and that are at risk of hypoxia.
    Type: Application
    Filed: June 4, 2019
    Publication date: December 19, 2019
    Inventors: Paul Stanley Addison, David Ming Hui Foo, Dominique Jacquel
  • Publication number: 20190380807
    Abstract: The present invention relates to the field of medical monitoring, and in particular non-contact monitoring of one or more physiological parameters in a region of a patient during surgery. Systems, methods, and computer readable media are described for generating a pulsation field and/or a pulsation strength field of a region of interest (ROI) in a patient across a field of view of an image capture device, such as a video camera. The pulsation field and/or the pulsation strength field can be generated from changes in light intensities and/or colors of pixels in a video sequence captured by the image capture device. The pulsation field and/or the pulsation strength field can be combined with indocyanine green (ICG) information regarding ICG dye injected into the patient to identify sites where blood flow has decreased and/or ceased and that are at risk of hypoxia.
    Type: Application
    Filed: June 4, 2019
    Publication date: December 19, 2019
    Inventors: Paul Stanley Addison, David Ming Hui Foo, Dominique Jacquel
  • Patent number: 10499818
    Abstract: A method for monitoring autoregulation includes, using a processor, using a processor to execute one or more routines on a memory. The one or more routines include receiving one or more physiological signals from a patient, determining a correlation-based measure indicative of the patient's autoregulation based on the one or more physiological signals, and generating an autoregulation profile of the patient based on autoregulation index values of the correlation-based measure. The autoregulation profile includes the autoregulation index values sorted into bins corresponding to different blood pressure ranges. The one or more routines also include designating a blood pressure range encompassing one or more of the bins as a blood pressure safe zone indicative of intact regulation and providing a signal to a display to display the autoregulation profile and a first indicator of the blood pressure safe zone.
    Type: Grant
    Filed: October 18, 2016
    Date of Patent: December 10, 2019
    Assignee: Covidien LP
    Inventors: Paul Stanley Addison, James N. Watson, Dean Montgomery
  • Patent number: 10463292
    Abstract: A system configured to monitor autoregulation includes a medical sensor configured to be applied to a patient and to generate a regional oxygen saturation signal. The system includes a controller having a processor configured to receive the regional oxygen saturation signal and a blood pressure signal and to determine a cerebral oximetry index (COx) based on the blood pressure signal and the regional oxygen saturation signal. The processor is also configured to apply a data clustering algorithm to cluster COx data points over a range of blood pressures, identify a first cluster of COx data points that corresponds to an intact autoregulation zone for the patient, and provide a first output indicative of the intact autoregulation zone for the patient.
    Type: Grant
    Filed: October 14, 2016
    Date of Patent: November 5, 2019
    Assignee: Covidien LP
    Inventors: Paul Stanley Addison, James N. Watson, Dean Montgomery
  • Patent number: 10448851
    Abstract: A PPG system for determining a stroke volume of a patient includes a PPG sensor configured to be secured to an anatomical portion of the patient. The PPG sensor is configured to sense a physiological characteristic of the patient. The PPG system may include a monitor operatively connected to the PPG sensor. The monitor receives a PPG signal from the PPG sensor. The monitor includes a pulse trending module determining a slope transit time of an upslope of a primary peak of the PPG signal. The pulse trending module determines a stroke volume of the patient as a function of the slope transit time.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: October 22, 2019
    Assignee: Covidien LP
    Inventors: Paul Stanley Addison, James Nicholas Watson
  • Patent number: 10398353
    Abstract: The present invention relates to the field of medical monitoring, and in particular non-contact, video-based monitoring of pulse rate, respiration rate, motion, and oxygen saturation. Systems and methods are described for capturing images of a patient, producing intensity signals from the images, filtering those signals to focus on a physiologic component, and measuring a vital sign from the filtered signals.
    Type: Grant
    Filed: February 14, 2017
    Date of Patent: September 3, 2019
    Assignee: Covidien LP
    Inventors: Paul Stanley Addison, David Foo, Dominique Jacquel
  • Publication number: 20190125214
    Abstract: Methods, systems, and devices for measuring respiratory parameters from an ECG device are described. The method may include receiving an electrocardiogram (ECG) signal associated with a patient. The method may further include detecting a change in modulation of the ECG signal between a first portion of the ECG signal and a second portion of the ECG signal. The method may further include determining a change in respiratory effort of the patient based at least in part on the change in modulation.
    Type: Application
    Filed: November 2, 2017
    Publication date: May 2, 2019
    Inventors: PAUL STANLEY ADDISON, DANIEL WAYNE BARTLETT, JAMES N. WATSON
  • Patent number: 10265005
    Abstract: According to embodiments, techniques for using continuous wavelet transforms and spectral transforms to determine oxygen saturation from photoplethysmographic (PPG) signals are disclosed. According to embodiments, a first and a second PPG signals may be received. A spectral transform of the first and the second PPG signals may be performed to produce a first and a second spectral transformed signals. A frequency region associated with a pulse rate of the PPG signals may be identified from the first and the second spectral transformed signals. According to embodiments, a continuous wavelet transform of the first and the second PPG signals may be performed at a scale corresponding to the identified frequency region to produce a first and a second wavelet transformed signals. The oxygen saturation may be determined based at least in part upon the wavelet transformed signals.
    Type: Grant
    Filed: May 22, 2014
    Date of Patent: April 23, 2019
    Assignee: NELLCOR PURITAN BENNETT IRELAND
    Inventors: James Nicholas Watson, Paul Stanley Addison
  • Patent number: 10182764
    Abstract: According to embodiments, a system for processing a physiological signals is disclosed. The system may comprise a sensor for generating the physiological signal. The system may comprise a processor configured to receive and process the physiological signal in order to improve interpretation and subsequent analysis of the physiological signal. The processor may be configured to generate a wavelet transform based on the physiological signal. The processor may be configured to determine phase values corresponding to the subject's respiration based on the wavelet transform. The processor may be configured to generate a sinusoidal waveform that is representative of the subject's breathing based on the phase values. The system may also comprise a display device configured to display the sinusoidal waveform.
    Type: Grant
    Filed: June 24, 2015
    Date of Patent: January 22, 2019
    Assignee: NELLCOR PURITAN BENNETT IRELAND
    Inventors: Paul Stanley Addison, James Nicholas Watson
  • Patent number: 10165953
    Abstract: Systems and methods are provided for storing and recalling metrics associated with physiological signals. It may be determined that the value of a monitored physiological metric corresponds to a stored value. In such cases, a patient monitor may determine that a calibration is not desired. In some cases, a patient monitor may recall calibration parameters associated with the stored value if it determined that the stored value corresponds to the monitored metric value.
    Type: Grant
    Filed: March 21, 2016
    Date of Patent: January 1, 2019
    Assignee: Nellcor Puritan Bennett Ireland
    Inventors: Paul Stanley Addison, James N. Watson
  • Publication number: 20180160915
    Abstract: A combined physiological sensor and methods for detecting one or more physiological characteristics of a subject are provided. The combined sensor (e.g., a forehead sensor) may be used to detect and/or calculate at least one of a pulse blood oxygen saturation level, a regional blood oxygen saturation level, a respiration rate, blood pressure, an electrical physiological signal (EPS), a pulse transit time (PTT), body temperature associated with the subject, a depth of consciousness (DOC) measurement, any other suitable physiological parameter, and any suitable combination thereof. The combined sensor may include a variety of individual sensors, such as electrodes, optical detectors, optical emitters, temperature sensors, and/or other suitable sensors. The sensors may be advantageously positioned in accordance with a number of different geometries.
    Type: Application
    Filed: February 7, 2018
    Publication date: June 14, 2018
    Inventors: Edward M. McKenna, Bo Chen, Youzhi Li, Paul Stanley Addison
  • Publication number: 20180000360
    Abstract: The present invention relates to physiological signal processing, and in particular to methods and systems for processing physiological signals to predict a fluid responsiveness of a patient. A medical monitor for monitoring a patient includes an input receiving a photoplethysmograph (PPG) signal representing light absorption by a patient's tissue. The monitor also includes a perfusion status indicator indicating a perfusion status of the PPG signal, and a fluid responsiveness predictor (FRP) calculator programmed to calculate an FRP value based on a respiratory variation of the PPG signal. The FRP calculator applies a correction factor based on the perfusion status indicator.
    Type: Application
    Filed: September 12, 2017
    Publication date: January 4, 2018
    Inventors: Paul Stanley Addison, Rui Wang, Scott McGonigle, James N. Watson