Patents by Inventor George John Vachtsevanos

George John Vachtsevanos 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: 8086294
    Abstract: A method and system for assessing a quality of life index to adjust an implanted device to optimize patient-specific feature signals and treatment therapies. Accumulated energy of intracranial electroencephalogram (IEEG) signals is calculated over multiple data channels during seizures over a fixed time period. Accumulated energy of a treatment control is calculated over the multiple data channels over all times of activation of the implanted device over the fixed time period. The accumulated energy of both the IEEG signals and treatment control are weighted by seizure and treatment factors to determine a quality value for the fixed time period. A quality of life index is determined as a weighted average of current and previous quality values for a plurality of fixed time periods.
    Type: Grant
    Filed: August 13, 2007
    Date of Patent: December 27, 2011
    Assignee: The Trustees of the University of Pennsylvania
    Inventors: Javier Ramón Echauz, Brian Litt, Rosana Esteller, George John Vachtsevanos
  • Patent number: 8065011
    Abstract: An adaptive method and apparatus for forecasting and controlling neurological abnormalities in humans such as seizures or other brain disturbances. The system is based on a multi-level control strategy. Using as inputs one or more types of physiological measures such as brain electrical, chemical or magnetic activity, heart rate, pupil dilation, eye movement, temperature, chemical concentration of certain substances, a feature set is selected off-line from a pre-programed feature library contained in a high level controller within a supervisory control architecture. This high level controller stores the feature library within a notebook or external PC. The supervisory control also contains a knowledge base that is continuously updated at discrete steps with the feedback information coming from an implantable device where the selected feature set (feature vector) is implemented.
    Type: Grant
    Filed: August 31, 2006
    Date of Patent: November 22, 2011
    Assignee: The Trustees of the University of Pennsylvania
    Inventors: Javier Ramón Echauz, Brian Litt, Rosana Esteller, George John Vachtsevanos
  • Patent number: 7333851
    Abstract: A method and an apparatus for predicting and detecting epileptic seizure onsets within a unified multiresolution probabilistic framework, enabling a portion of the device to automatically deliver a progression of multiple therapies, ranging from benign to aggressive as the probabilities of seizure warrant. Based on novel computational intelligence algorithms, a realistic posterior probability function P(ST|x) representing the probability of one or more seizures starting within the next T minutes, given observations x derived from IEEG or other signals, is periodically synthesized for a plurality of prediction time horizons. When coupled with optimally determined thresholds for alarm or therapy activation, probabilities defined in this manner provide anticipatory time-localization of events in a synergistic logarithmic-like array of time resolutions, thus effectively circumventing the performance vs. prediction-horizon tradeoff of single-resolution systems.
    Type: Grant
    Filed: September 12, 2003
    Date of Patent: February 19, 2008
    Assignee: The Trustees of the University of Pennsylvania
    Inventors: Javier Ramón Echauz, Rosana Esteller, Brian Litt, George John Vachtsevanos
  • Patent number: 7146218
    Abstract: A method and apparatus for forecasting and controlling neurological abnormalities in humans such as seizures or other brain disturbances. The system is based on a multi-level control strategy. Using as inputs one or more types of physiological measures such as brain electrical, chemical or magnetic activity, heart rate, pupil dilation, eye movement, temperature, chemical concentration of certain substances, a feature set is selected off-line from a pre-programmed feature library contained in a high level controller within a supervisory control architecture. This high level controller stores the feature library within a notebook or external PC. The supervisory control also contains a knowledge base that is continuously updated at discrete steps with the feedback information coming from an implantable device where the selected feature set (feature vector) is implemented.
    Type: Grant
    Filed: February 4, 2003
    Date of Patent: December 5, 2006
    Assignee: The Trustees of the University of Pennsylvania
    Inventors: Rosana Esteller, Javier Ramón Echauz, Brian Litt, George John Vachtsevanos
  • Publication number: 20040068199
    Abstract: A method and an apparatus for predicting and detecting epileptic seizure onsets within a unified multiresolution probabilistic framework, enabling a portion of the device to automatically deliver a progression of multiple therapies, ranging from benign to aggressive as the probabilities of seizure warrant. Based on novel computational intelligence algorithms, a realistic posterior probability function P(ST|x) representing the probability of one or more seizures starting within the next T minutes, given observations x derived from IEEG or other signals, is periodically synthesized for a plurality of prediction time horizons. When coupled with optimally determined thresholds for alarm or therapy activation, probabilities defined in this manner provide anticipatory time-localization of events in a synergistic logarithmic-like array of time resolutions, thus effectively circumventing the performance vs. prediction-horizon tradeoff of single-resolution systems.
    Type: Application
    Filed: September 12, 2003
    Publication date: April 8, 2004
    Applicant: The Trustees of the University of Pennsylvania
    Inventors: Javier Ramon Echauz, Rosana Esteller, Brian Litt, George John Vachtsevanos
  • Patent number: 6678548
    Abstract: A method and an apparatus for predicting and detecting epileptic seizure onsets within a unified multiresolution probabilistic framework, enabling a portion of the device to automatically deliver a progression of multiple therapies, ranging from benign to aggressive as the probabilities of seizure warrant. Based on novel computational intelligence algorithms, a realistic posterior probability function P(St|x) representing the probability of one or more seizures starting within the next T minutes, given observations x derived from IEEG or other signals, is periodically synthesized for a plurality of prediction time horizons. When coupled with optimally determined thresholds for alarm or therapy activation, probabilities defined in this manner provide anticipatory time-localization of events in a synergistic logarithmic-like array of time resolutions, thus effectively circumventing the performance vs. prediction-horizon tradeoff of single-resolution systems.
    Type: Grant
    Filed: October 20, 2000
    Date of Patent: January 13, 2004
    Assignee: The Trustees of the University of Pennsylvania
    Inventors: Javier Ramón Echauz, Rosana Esteller, Brian Litt, George John Vachtsevanos
  • Publication number: 20030158587
    Abstract: A method and apparatus for forecasting and controlling neurological abnormalities in humans such as seizures or other brain disturbances. The system is based on a multi-level control strategy. Using as inputs one or more types of physiological measures such as brain electrical, chemical or magnetic activity, heart rate, pupil dilation, eye movement, temperature, chemical concentration of certain substances, a feature set is selected off-line from a pre-programmed feature library contained in a high level controller within a supervisory control architecture. This high level controller stores the feature library within a notebook or external PC. The supervisory control also contains a knowledge base that is continuously updated at discrete steps with the feedback information coming from an implantable device where the selected feature set (feature vector) is implemented.
    Type: Application
    Filed: February 4, 2003
    Publication date: August 21, 2003
    Applicant: The Trustees of the University of pennsylvania
    Inventors: Rosana Esteller, Javier Ramon Echauz, Brian Litt, George John Vachtsevanos
  • Patent number: 6594524
    Abstract: A method and apparatus for forecasting and controlling neurological abnormalities in humans such as seizures or other brain disturbances. The system is based on a multi-level control strategy. Using as inputs one or more types of physiological measures such as brain electrical, chemical or magnetic activity, heart rate, pupil dilation, eye movement, temperature, chemical concentration of certain substances, a feature set is selected off-line from a pre-programmed feature library contained in a high level controller within a supervisory control architecture. This high level controller stores the feature library within a notebook or external PC. The supervisory control also contains a knowledge base that is continuously updated at discrete steps with the feedback information coming from an implantable device where the selected feature set (feature vector) is implemented.
    Type: Grant
    Filed: December 12, 2000
    Date of Patent: July 15, 2003
    Assignee: The Trustees of the University of Pennsylvania
    Inventors: Rosana Esteller, Javier Ramón Echauz, Brian Litt, George John Vachtsevanos
  • Publication number: 20020103512
    Abstract: A method and apparatus for forecasting and controlling neurological abnormalities in humans such as seizures or other brain disturbances. The system is based on a multi-level control strategy. Using as inputs one or more types of physiological measures such as brain electrical, chemical or magnetic activity, heart rate, pupil dilation, eye movement, temperature, chemical concentration of certain substances, a feature set is selected off-line from a pre-programmed feature library contained in a high level controller within a supervisory control architecture. This high level controller stores the feature library within a notebook or external PC. The supervisory control also contains a knowledge base that is continuously updated at discrete steps with the feedback information coming from an implantable device where the selected feature set (feature vector) is implemented.
    Type: Application
    Filed: December 12, 2000
    Publication date: August 1, 2002
    Inventors: Javier Ramon Echauz, Brian Litt, Rosana Esteller, George John Vachtsevanos