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).

  • SYSTEM AND METHOD FOR DETERMINING RESPIRATORY PARAMETERS FROM BLOOD FLOW SIGNALS
    Publication number: 20140316286
    Abstract: A system for determining one or more respiratory parameters of an individual may include a blood flow detection device configured to detect a blood flow signal of the individual, a blood flow determination module configured to form a blood flow waveform based on the blood flow signal, and a respiratory parameter analysis module configured to analyze the blood flow waveform and determine the respiratory parameter(s) from an analysis of the blood flow waveform.
    Type: Application
    Filed: April 22, 2013
    Publication date: October 23, 2014
    Applicant: Covidien LP
    Inventors: Paul Stanley Addison, James Nicholas Watson
  • SYSTEM AND METHOD FOR SCALING A FLUID RESPONSIVENESS METRIC
    Publication number: 20140316278
    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 may include an input receiving a photoplethysmograph (PPG) signal representing light absorption by a patient's tissue, and a fluid responsiveness predictor (FRP) calculator programmed to calculate an FRP metric. The monitor also may include a memory storing a relationship between the FRP metric and a pulse pressure variation (PPV) metric. The FRP metric is calculated based on a respiratory variation of the PPG signal and based on the relationship.
    Type: Application
    Filed: April 23, 2014
    Publication date: October 23, 2014
    Applicant: COVIDIEN LP
    Inventors: Paul Stanley Addison, Rui Wang, Scott McGonigle, James N. Watson
  • Systems and methods for monitoring pain management
    Patent number: 8858433
    Abstract: The present disclosure relates to systems and methods for monitoring pain management using measurements of physiological parameters based on a PPG signal. A reference physiological parameter may be compared against a later measurement to identify a change in condition that may indicate a pain management problem.
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: October 14, 2014
    Assignee: Nellcor Puritan Bennett Ireland
    Inventors: Rakesh Sethi, Paul Stanley Addison, James N. Watson, Paul A. Edney
  • Methods and Systems for Determining a Probe-Off Condition in a Medical Device
    Publication number: 20140275882
    Abstract: A physiological monitoring system may use one or more characteristics of an ambient signal to determine a probe-off condition. A physiological sensor may be used to emit one or more wavelengths of light. A light signal may be received that includes an ambient light component and one or more components corresponding to the emitted light. One or more characteristics (e.g., baseline characteristics) of the ambient light component may be determined and compared to one or more thresholds. The system may determine whether the physiological sensor is properly positioned based on the comparison.
    Type: Application
    Filed: March 12, 2013
    Publication date: September 18, 2014
    Applicant: Covidien LP
    Inventors: Paul Stanley Addison, James Nicholas Watson, Paul Mannheimer
  • SYSTEMS AND METHODS FOR DETERMINING RESPIRATION INFORMATION FROM SEGMENTS OF A PHOTOPLETHYSMOGRAPH
    Publication number: 20140275889
    Abstract: A physiological monitoring system may determine respiration information from a PPG signal. The system may analyze the PPG signal with respect to itself by associating values of the PPG signal with values of a time-delayed version of the PPG signal to create pairs of associated values. A subset of associated values may be identified. Respiration metric values may be determined based on the subset of pairs. The respiration metric values may be amplitude values and/or time values corresponding to the subset of pairs. The respiration metric values may be analyzed using autocorrelation, cross-correlation, or other signal processing techniques to determine respiration information such as respiration rate.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Inventors: Paul Stanley Addison, James Watson
  • SYSTEMS AND METHODS FOR DETERMINING RESPIRATION INFORMATION BASED ON INDEPENDENT COMPONENT ANALYSIS
    Publication number: 20140275879
    Abstract: A patient monitoring system may receive a physiological signal such as a photoplethysmograph (PPG) signal. A plurality of respiration morphology signals may be determined from the PPG signal. Independent component analysis may be performed on the respiration morphology signals, resulting in a plurality of independent components. An independent component corresponding to a respiration source signal may be selected from the plurality of independent components. Respiration information such as respiration rate may be determined based at least in part on the selected independent component.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Inventors: Paul Stanley Addison, James Nicholas Watson, Jimmy Dripps, James Ochs
  • SYSTEM AND METHOD FOR DETERMINING REPETITIVE AIRFLOW REDUCTIONS
    Publication number: 20140275938
    Abstract: Certain embodiments of the present disclosure provide a system and method for determining a repetitive airflow reduction of an individual. The system may include a photoplethysmogram (PPG) detection module configured to detect a PPG signal of a patient. The PPG signal may include a pulsatile AC component superimposed on a DC baseline. The system may also include a PPG baseline analysis module configured to analyze the DC baseline of the PPG signal to detect one or more threshold crossings with respect to an acceptable threshold correlated to normal breathing. The system may also include a repetitive airflow reduction determination module configured to determine an occurrence of the repetitive airflow reduction through an analysis of the one or more threshold crossings.
    Type: Application
    Filed: March 14, 2013
    Publication date: September 18, 2014
    Applicant: Covidien LP
    Inventors: Paul Stanley Addison, James Nicholas Watson
  • SYSTEMS AND METHODS FOR IDENTIFYING PATIENT DISTRESS BASED ON A SOUND SIGNAL
    Publication number: 20140278388
    Abstract: A sound signal from a patient may include information that may be used to determine multiple patient parameters. A patient monitor may determine respiration information such as respiration rate from the sound signal, for example based on modulations of the sound signal due to patient breathing. The patient monitor may also determine indications of patient distress based on a trained classifier, speech commands, or sound patterns.
    Type: Application
    Filed: March 14, 2013
    Publication date: September 18, 2014
    Applicant: Covidien LP
    Inventors: James Nicholas Watson, Paul Stanley Addison
  • SYSTEMS AND METHODS FOR DETERMINING RESPIRATION INFORMATION BASED ON PRINCIPAL COMPONENT ANALYSIS
    Publication number: 20140275877
    Abstract: A patient monitoring system may receive a physiological signal such as a photoplethysmograph (PPG) signal. A plurality of respiration morphology signals may be determined from the PPG signal. Principal component analysis may be performed on the respiration morphology signals, resulting in one or more principal components. Respiration information such as respiration rate may be determined at least in part from a principal component that corresponds to a respiration source signal.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Inventors: Jimmy Dripps, Scott McGonigle, James Ochs, Paul Stanley Addison, James Watson
  • Systems and methods for determining respiratory effort
    Patent number: 8834378
    Abstract: Systems and methods for calculating a measure of respiratory effort of a subject are provided. The measure of respiratory effort may be calculated based on a differential pulse transit time (DPTT) calculated for received photoplethysmograph signals. The systems and methods may allow for the calculation of respiratory effort in absolute units, and without the need for calibrations from a device that measures blood pressure (e.g., a non-invasive blood pressure cuff).
    Type: Grant
    Filed: July 30, 2010
    Date of Patent: September 16, 2014
    Assignee: Nellcor Puritan Bennett Ireland
    Inventors: Paul Stanley Addison, James N. Watson
  • SYSTEMS AND METHODS FOR DETERMINING OXYGEN SATURATION
    Publication number: 20140257061
    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: Application
    Filed: May 22, 2014
    Publication date: September 11, 2014
    Applicant: Nellcor Puritan Bennett Ireland
    Inventors: James Nicholas Watson, Paul Stanley Addison
  • Systems and methods for artifact detection in signals
    Patent number: 8827917
    Abstract: According to embodiments, a method and system for artifact detection in signals is disclosed. The artifacts may take the form of movement artifacts in physiological (e.g., pulse oximetry) signals. Artifacts in the wavelet space of the physiological signal may be removed, replaced, ignored, filtered, or otherwise modified by determining the energy within a predefined moving area of the wavelet scalogram, comparing the determined energy within the predefined moving area of the wavelet scalogram to a threshold value, and masking at least one area of artifact in the wavelet scalogram based, at least in part, on the comparison. From the enhanced signal, physiological parameters, for example, respiration, respiratory effort, pulse, and oxygen saturation, may be more reliably and accurately derived or computed.
    Type: Grant
    Filed: October 3, 2008
    Date of Patent: September 9, 2014
    Assignee: Nelleor Puritan Bennett Ireland
    Inventors: James Watson, Paul Stanley Addison
  • Methods and systems for recalibrating a blood pressure monitor with memory
    Patent number: 8825428
    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: November 30, 2010
    Date of Patent: September 2, 2014
    Assignee: Neilcor Puritan Bennett Ireland
    Inventors: Paul Stanley Addison, James N. Watson
  • METHODS AND SYSTEMS FOR DETERMINING A PROBE-OFF CONDITION IN A MEDICAL DEVICE
    Publication number: 20140243633
    Abstract: A physiological monitoring system may determine a probe-off condition. A physiological sensor may receive a light signal including one or more wavelengths of light. The received light signal may be processed to obtain a light signal corresponding to an ambient light signal and a light signal corresponding to an emitted light signal and the ambient light signal. The signals may be analyzed to identify an inverse effect. The system may determine whether the physiological sensor is properly positioned based on the identification of an inverse effect.
    Type: Application
    Filed: February 25, 2013
    Publication date: August 28, 2014
    Applicant: Covidien LP
    Inventors: Paul Stanley Addison, James Nicholas Watson
  • SYSTEMS AND METHODS FOR GENERATING AN ARTIFICIAL PHOTOPLETHYSMOGRAPH SIGNAL
    Publication number: 20140244205
    Abstract: A test unit may generate a pulse signal based on a pulsatile profile and a frequency modulation component of a respiratory profile. A respiration modulated signal may be generated from the pulse signal, an amplitude modulation component, and a baseline modulation component. A patient modulated signal may be generated based on the respiration modulated signal and a patient profile. The artificial PPG signal may be generated based on the patient modulated signal and an artifact profile. The artificial PPG signal may be output to an electronic device.
    Type: Application
    Filed: February 27, 2013
    Publication date: August 28, 2014
    Applicant: Covidien LP
    Inventors: Braddon M. Van Slyke, Ronald Kadlec, Scott McGonigle, Michael Mestek, Paul Stanley Addison, James Nicholas Watson
  • Systems and methods for monitoring pain management
    Patent number: 8814791
    Abstract: The present disclosure relates to systems and methods for monitoring pain management using measurements of physiological parameters based on a PPG signal. A reference physiological parameter may be compared against a later measurement to identify a change in condition that may indicate a pain management problem.
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: August 26, 2014
    Assignee: Nellcor Puritan Bennett Ireland
    Inventors: Rakesh Sethi, Paul Stanley Addison, James N. Watson, Paul A. Edney
  • WAVELET-BASED SYSTEM AND METHOD FOR ANALYZING A PHYSIOLOGICAL SIGNAL
    Publication number: 20140213862
    Abstract: Certain embodiments of the present disclosure provide a system and method for analyzing a physiological signal detected from an individual. The system may include a physiological signal detection module configured to detect the physiological signal of the individual, a wavelet formation module configured to form a wavelet based on the physiological signal, and a wavelet transform module configured to generate a scalogram by transforming the physiological signal with the wavelet based on the physiological signal.
    Type: Application
    Filed: January 28, 2013
    Publication date: July 31, 2014
    Applicant: Covidien LP
    Inventors: Paul Stanley Addison, James Ochs, James Nicholas Watson
  • SYSTEM AND METHOD FOR DETERMINING RESPIRATORY EFFORT
    Publication number: 20140207004
    Abstract: A system for determining respiratory effort of an individual may include a pressure signal determination module configured to determine a physiological pressure signal of the individual, a wavelet transform module configured to transform the physiological pressure signal into a scalogram using at least one wavelet transform, and a respiratory effort determination module configured to determine the respiratory effort of the individual through an analysis of scalogram.
    Type: Application
    Filed: January 18, 2013
    Publication date: July 24, 2014
    Applicant: Covidien LP
    Inventors: Paul Stanley Addison, James Nicholas Watson
  • Systems and methods for determining signal quality of a physiological signal using a wavelet transform and an identified noise floor
    Patent number: 8786444
    Abstract: A method and system are provided for evaluating in patient monitoring whether a signal is sensed optimally by receiving a signal, transforming the signal using a wavelet transform, generating a scalogram based at least in part on the transformed signal, identifying a pulse band in the scalogram, identifying a characteristic of the pulse band, determining, based on the characteristic of the pulse band, whether the signal is sensed optimally; and triggering an event. The characteristics of the pulse band and scalogram may be used to provide an indication of monitoring conditions.
    Type: Grant
    Filed: January 21, 2013
    Date of Patent: July 22, 2014
    Inventors: James Nicholas Watson, Paul Stanley Addison, Edward M. McKenna, James P. Ochs
  • METHODS AND SYSTEMS FOR DETERMINING SIGNAL QUALITY OF A PHYSIOLOGICAL SIGNAL
    Publication number: 20140180043
    Abstract: A physiological monitoring system may use photonic signals at one or more wavelengths to determine physiological parameters. The system may monitor a photoplethysmograph (PPG) signal, which may include a periodic component, and an aperiodic component. An attractor may be generated based on a first segment of the PPG signal and a second segment of the PPG signal shifted in time relative to the first segment by a time delay. The system may analyze points of the attractor that correspond to a curve, analyze the distribution of the attractor about a curve, or both, to determine a signal quality metric indicative of cycle to cycle variation in the PPG signal.
    Type: Application
    Filed: December 22, 2012
    Publication date: June 26, 2014
    Applicant: Covidien LP
    Inventors: Paul Stanley Addison, James Nicholas Watson