Patents by Inventor Venkatachalam Chandrasekar

Venkatachalam Chandrasekar 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).

  • Impedance analysis for esophageal maladies
    Patent number: 8635053
    Abstract: A system and method for automatically analyzing impedance and pH data from an esophageal probe includes a data collection system that collects and stores the output from the sensors for a certain period of time to locate reflux episodes in the waveforms. The data analysis system uses wavelet analysis to assist in locating bolus entry and exit points in the waveforms and to smooth waveforms for additional analysis. It also distinguishes between candidate acid reflux episodes and candidate non-acid reflux episodes for determining actual acid reflux episodes and non-acid reflux episodes, and it distinguishes between, and provides different signal processing for, signals from patients that have healthy esophageal tissue and those that have diseased esophageal tissue.
    Type: Grant
    Filed: October 19, 2010
    Date of Patent: January 21, 2014
    Assignee: Sandhill Scientific, Inc.
    Inventors: Thomas D. Stuebe, Venkatachalam Chandrasekar, Awad Al-Zaben
  • IMPEDANCE ANALYSIS FOR ESOPHAGEAL MALADIES
    Publication number: 20110112429
    Abstract: A system and method for automatically analyzing impedance and pH data from an esophageal probe includes a data collection system that collects and stores the output from the sensors for a certain period of time to locate reflux episodes in the waveforms. The data analysis system uses wavelet analysis to assist in locating bolus entry and exit points in the waveforms and to smooth waveforms for additional analysis. It also distinguishes between candidate acid reflux episodes and candidate non-acid reflux episodes for determining actual acid reflux episodes and non-acid reflux episodes, and it distinguishes between, and provides different signal processing for, signals from patients that have healthy esophageal tissue and those that have diseased esophageal tissue.
    Type: Application
    Filed: October 19, 2010
    Publication date: May 12, 2011
    Applicant: Sandhill Scientific, Inc.
    Inventors: Thomas D. Stuebe, Venkatachalam Chandrasekar, Awad Al-Zaben
  • Esophageal waveform analysis for detection and quantification of reflux episodes
    Patent number: 7818155
    Abstract: A system and method for automatically analyzing impedance and pH data from an esophageal probe includes a data collection system that collects and stores the output from the sensors for a certain period of time to locate reflux episodes in the waveforms. The data analysis system uses wavelet analysis to assist in locating bolus entry and exit points in the waveforms and to smooth waveforms for additional analysis. It also distinguishes between candidate acid reflux episodes and candidate non-acid reflux episodes for determining actual acid reflux episodes and non-acid reflux episodes, and it distinguishes between, and provides different signal processing for, signals from patients that have healthy esophageal tissue and those that have diseased esophageal tissue.
    Type: Grant
    Filed: February 11, 2008
    Date of Patent: October 19, 2010
    Assignee: Sandhill Scientific, Inc.
    Inventors: Thomas D. Stuebe, Venkatachalam Chandrasekar, Awad Al-Zaben
  • ESOPHAGEAL WAVEFORM ANALYSIS FOR DETECTION AND QUANTIFICATION OF REFLUX EPISODES
    Publication number: 20080306411
    Abstract: A system and method for automatically analyzing impedance and pH data from an esophageal probe includes a data collection system that collects and stores the output from the sensors for a certain period of time to locate reflux episodes in the waveforms. The data analysis system uses wavelet analysis to assist in locating bolus entry and exit points in the waveforms and to smooth waveforms for additional analysis. It also distinguishes between candidate acid reflux episodes and candidate non-acid reflux episodes for determining actual acid reflux episodes and non-acid reflux episodes, and it distinguishes between, and provides different signal processing for, signals from patients that have healthy esophageal tissue and those that have diseased esophageal tissue.
    Type: Application
    Filed: February 11, 2008
    Publication date: December 11, 2008
    Applicant: Sandhill Scientific, Inc.
    Inventors: Thomas D. Stuebe, Venkatachalam Chandrasekar, Awad Al-Zaben
  • Esophageal waveform analysis for detection and quantification of reflux episodes
    Publication number: 20050080832
    Abstract: A system and method for automatically analyzing impedance and pH data from an esophageal probe includes a data collection system that collects and stores the output from the sensors for a certain period of time to locate reflux episodes in the waveforms. The data analysis system uses wavelet analysis to assist in locating bolus entry and exit points in the waveforms and to smooth waveforms for additional analysis.
    Type: Application
    Filed: September 7, 2004
    Publication date: April 14, 2005
    Inventors: Thomas Stuebe, Venkatachalam Chandrasekar, Awad Al-Zaben