Patents by Inventor Carey Robert Briggs
Carey Robert Briggs 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: 9220427Abstract: In a system and method for reconstructing cardiac activation information, an analysis cardiac signal and a reference cardiac signal are processed to determine a first point of change in a derivative of the analysis cardiac signal with respect to a derivative of the reference cardiac signal. The analysis cardiac signal and the reference cardiac signal are processed to determine a second point of change in a different derivative of the analysis cardiac signal with respect to a different derivative of the reference cardiac signal. An activation onset time is assigned in the analysis cardiac signal at a point based on a mathematical association of the first point of change and the second point of change to define cardiac activation indicating a beat in the analysis cardiac signal.Type: GrantFiled: March 26, 2015Date of Patent: December 29, 2015Assignees: The Regents of the University of California, Topera, Inc., The United States of America as Represented by the Department of Veterans Affairs, Office of the General CounselInventors: Sanjiv Narayan, Carey Robert Briggs, Ruchir Sehra
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Publication number: 20150313548Abstract: An example method of representing cardiac information associated with a heart rhythm disorder includes accessing a plurality of neighboring cardiac signals obtained from a patient. The method also includes eliminating far-field activations from the plurality of neighboring cardiac signals using one or more divergence criteria that define local activations in the plurality of neighboring cardiac signals, the divergence criteria being associated with divergence among the plurality of neighboring cardiac signals. The method further includes constructing a clinical representation of local activations in the plurality of neighboring cardiac signals.Type: ApplicationFiled: July 13, 2015Publication date: November 5, 2015Inventors: Sanjiv Narayan, Carey Robert Briggs
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Publication number: 20150257710Abstract: An example system and method of reconstructing cardiac activation information are disclosed. In accordance therewith, there are accessed pairs of cardiac signals out of a plurality of cardiac signals obtained from a patient. The pairs have a first cardiac signal that is common among the pairs and second cardiac signals that are different among the pairs. The first cardiac signal and the second cardiac signals of the pairs are processed to identify points of change in the first cardiac signal at which a derivative of the first cardiac signal diverges with respect to derivatives of the second cardiac signals. An activation onset time is assigned at a point in the first cardiac signal based on correspondence of the points of change to define a cardiac activation indicating a beat.Type: ApplicationFiled: May 28, 2015Publication date: September 17, 2015Applicant: The United States of America as represented by the Department of Veterans Affairs, Office of the GenInventors: Sanjiv Narayan, Carey Robert Briggs
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Patent number: 9107600Abstract: An example method of representing cardiac information associated with a heart rhythm disorder is disclosed. The method includes accessing a plurality of neighboring cardiac signals obtained from a patient. The method also includes eliminating far-field activations from the plurality of neighboring cardiac signals using one or more divergence criteria that define local activations in the plurality of neighboring cardiac signals, the divergence criteria being associated with divergence among the plurality of neighboring cardiac signals. The method further includes constructing a clinical representation of local activations in the plurality of neighboring cardiac signals.Type: GrantFiled: August 29, 2014Date of Patent: August 18, 2015Assignees: The Regents of the University of California, Topera, Inc., The United States of America as represented by the Department of Veterans AffairsInventors: Sanjiv Narayan, Carey Robert Briggs
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Publication number: 20150196212Abstract: In a system and method for reconstructing cardiac activation information, an analysis cardiac signal and a reference cardiac signal are processed to determine a first point of change in a derivative of the analysis cardiac signal with respect to a derivative of the reference cardiac signal. The analysis cardiac signal and the reference cardiac signal are processed to determine a second point of change in a different derivative of the analysis cardiac signal with respect to a different derivative of the reference cardiac signal. An activation onset time is assigned in the analysis cardiac signal at a point based on a mathematical association of the first point of change and the second point of change to define cardiac activation indicating a beat in the analysis cardiac signal.Type: ApplicationFiled: March 26, 2015Publication date: July 16, 2015Inventors: Sanjiv Narayan, Carey Robert Briggs, Ruchir Sehra
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Patent number: 9055876Abstract: An example system and method of processing cardiac activation information are disclosed. The method includes accessing a first cardiac signal and a second cardiac signal obtained from a patient. The first cardiac signal and the second cardiac signal are processed to determine whether there is a point of change in the first cardiac signal at which a derivative of the first cardiac signal diverges with respect to a derivative of the second cardiac signal above a threshold. An activation onset time is assigned in the first cardiac signal at the point of change to define a cardiac activation if the point of change is in the first cardiac signal.Type: GrantFiled: November 7, 2013Date of Patent: June 16, 2015Assignees: The Regents of the University of California, Topera, Inc., The United States of America as represented by the Department of Veterans AffairsInventors: Sanjiv Narayan, Carey Robert Briggs
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Patent number: 9055878Abstract: An example system and method of reconstructing cardiac activation information are disclosed. In accordance therewith, there are accessed pairs of cardiac signals out of a plurality of cardiac signals obtained from a patient. The pairs have a first cardiac signal that is common among the pairs and second cardiac signals that are different among the pairs. The first cardiac signal and the second cardiac signals of the pairs are processed to determine whether there are points of change in the first cardiac signal at which a derivative of the first cardiac signal diverges with respect to derivatives of the second cardiac signals above a threshold. An activation onset time is assigned at a point in the first cardiac signal based on correspondence of the points of change to define a cardiac activation indicating a beat if the points of change are in the first signal.Type: GrantFiled: August 29, 2014Date of Patent: June 16, 2015Assignees: The Regents of the University of California, Topera, Inc., The United States of America as represented by the Department of Veterans AffairsInventors: Sanjiv Narayan, Carey Robert Briggs
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Patent number: 9055877Abstract: An example system and method of processing cardiac activation information are disclosed. The method includes accessing a first cardiac signal and a second cardiac signal obtained from a patient. The first cardiac signal and the second cardiac signal are processed to identify a point of change in the first cardiac signal at which a derivative of the first cardiac signal diverges with respect to a derivative of the second cardiac signal. An activation onset time is assigned in the first cardiac signal at the point of change to define a cardiac activation.Type: GrantFiled: November 12, 2013Date of Patent: June 16, 2015Assignees: The Regents of the University of California, Topera, Inc., The United States of America as represented by the Department of Veterans AffairsInventors: Sanjiv Narayan, Carey Robert Briggs
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Patent number: 9050006Abstract: An example system and method of reconstructing cardiac activation information are disclosed. An analysis signal and a reference signal are processed to determine whether there is a first point of change in a first selected-order derivative of the analysis signal with respect to a first selected-order derivative of the reference signal above a first threshold. The analysis signal and the reference signal are processed to determine whether there is a second point of change in a second selected-order derivative of the analysis cardiac signal with respect to a second selected-order derivative of the reference cardiac signal above a second threshold. An activation onset time is assigned in the analysis cardiac signal at a point based on a mathematical association of the first point of change and the second point of change to define cardiac activation indicating a beat in the analysis cardiac signal.Type: GrantFiled: March 15, 2013Date of Patent: June 9, 2015Assignees: The Regents of the University of California, Topera, Inc.Inventors: Sanjiv Narayan, Carey Robert Briggs, Ruchir Sehra
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Publication number: 20150073721Abstract: A system and method to process segments of cardiac signals. Each of a plurality of segments in a first signal is correlated at a plurality of offsets to determine a highest correlation coefficient for each of the plurality of segments in the first signal. Each of a plurality of segments in a second signal is correlated at the plurality of offsets to determine a highest correlation coefficient for each of the plurality of segments in the second signal. A plurality of composite correlation coefficients is generated using highest correlation coefficients for segments of the first signal and segments of the second signal. The segments of the first and second signals are approximately contemporaneous. A set of segments including a segment from the first signal and a segment from the second signal is selected. The set is associated with a highest composite correlation coefficient from the plurality of composite correlation coefficients.Type: ApplicationFiled: September 11, 2014Publication date: March 12, 2015Inventors: Carey Robert Briggs, Ruchir Sehra
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Publication number: 20150038861Abstract: A system and method of locating a source of a heart rhythm disorder are provided in which a first pair of cardiac signals is processed to define a first coefficient associated with variability of the first pair of signals at a first region of the heart. A second pair of cardiac signals is processed to define a second coefficient associated with variability of the second pair of signals at a second region of the heart. Thereafter, the first coefficient of variability is compared to the second coefficient of variability to determine a direction towards the source of the rhythm disorder.Type: ApplicationFiled: October 6, 2014Publication date: February 5, 2015Inventors: Sanjiv Narayan, Carey Robert Briggs
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Publication number: 20140371609Abstract: An example system and method associated with identifying and treating a source of a heart rhythm disorder are disclosed. In accordance with therewith, a spatial element associated with a region of the heart is selected. Progressive rotational activations or progressive focal activations are determined in relation to the selected spatial element. A plurality of indexes of progressive rotational activations or progressive focal activations over time is formed.Type: ApplicationFiled: August 29, 2014Publication date: December 18, 2014Inventors: Sanjiv Narayan, Carey Robert Briggs, Ruchir Sehra
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Publication number: 20140371615Abstract: An example system and method of reconstructing cardiac activation information are disclosed. In accordance therewith, there are accessed pairs of cardiac signals out of a plurality of cardiac signals obtained from a patient. The pairs have a first cardiac signal that is common among the pairs and second cardiac signals that are different among the pairs. The first cardiac signal and the second cardiac signals of the pairs are processed to determine whether there are points of change in the first cardiac signal at which a derivative of the first cardiac signal diverges with respect to derivatives of the second cardiac signals above a threshold. An activation onset time is assigned at a point in the first cardiac signal based on correspondence of the points of change to define a cardiac activation indicating a beat if the points of change are in the first signal.Type: ApplicationFiled: August 29, 2014Publication date: December 18, 2014Inventors: Sanjiv Narayan, Carey Robert Briggs
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Publication number: 20140371614Abstract: An example method of representing cardiac information associated with a heart rhythm disorder is disclosed. The method includes accessing a plurality of neighboring cardiac signals obtained from a patient. The method also includes eliminating far-field activations from the plurality of neighboring cardiac signals using one or more divergence criteria that define local activations in the plurality of neighboring cardiac signals, the divergence criteria being associated with divergence among the plurality of neighboring cardiac signals. The method further includes constructing a clinical representation of local activations in the plurality of neighboring cardiac signals.Type: ApplicationFiled: August 29, 2014Publication date: December 18, 2014Inventors: Sanjiv Narayan, Carey Robert Briggs
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Publication number: 20140276152Abstract: A system and method of identifying a driver of a source associated with a heart rhythm disorder are disclosed. Data is accessed from a plurality of sensors representing biological activity in the heart. A local first region of the heart that has repeating activation and that controls a second distant region of the heart for at least a predetermined number of beats is identified. The first local region is assigned as a driver of a source of the heart rhythm disorder, the source including the first local region and the second distant region.Type: ApplicationFiled: March 15, 2013Publication date: September 18, 2014Applicants: The Regents of the University of California, Topera, Inc.Inventors: Sanjiv Narayan, Carey Robert Briggs, Ruchir Sehra
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Publication number: 20140073981Abstract: An example system and method of processing cardiac activation information are disclosed. The method includes accessing a first cardiac signal and a second cardiac signal obtained from a patient. The first cardiac signal and the second cardiac signal are processed to identify a point of change in the first cardiac signal at which a derivative of the first cardiac signal diverges with respect to a derivative of the second cardiac signal. An activation onset time is assigned in the first cardiac signal at the point of change to define a cardiac activation.Type: ApplicationFiled: November 12, 2013Publication date: March 13, 2014Applicants: Topera, Inc., The Regents of the University of CaliforniaInventors: Sanjiv Narayan, Carey Robert Briggs
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Publication number: 20140066787Abstract: An example system and method of processing cardiac activation information are disclosed. The method includes accessing a first cardiac signal and a second cardiac signal obtained from a patient. The first cardiac signal and the second cardiac signal are processed to determine whether there is a point of change in the first cardiac signal at which a derivative of the first cardiac signal diverges with respect to a derivative of the second cardiac signal above a threshold. An activation onset time is assigned in the first cardiac signal at the point of change to define a cardiac activation if the point of change is in the first cardiac signal.Type: ApplicationFiled: November 7, 2013Publication date: March 6, 2014Applicants: Topera, Inc., The Regents of the University of CaliforniaInventors: Sanjiv Narayan, Carey Robert Briggs
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Patent number: 8594777Abstract: An example system and method of reconstructing biological activation information are disclosed. A first biological signal and a second biological signal associated with an organ are processed via a computing device to determine whether there is a point of change in a derivative of the first biological signal with respect to a derivative of the second biological signal above a threshold. An activation onset time is assigned in the first biological signal at the point of change to define biological activation associated with the organ in the first biological signal if it is determined that the point of change is above the threshold.Type: GrantFiled: April 3, 2012Date of Patent: November 26, 2013Assignee: The Reagents of the University of CaliforniaInventors: Carey Robert Briggs, Sanjiv Narayan
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Publication number: 20130150740Abstract: An example system and method of locating a source of a heart rhythm disorder are disclosed. In accordance with the method, a first pair of cardiac signals is processed to define a first coefficient associated with variability of the first pair of signals at a first region of the heart. Further, a second pair of cardiac signals is processed to define a second coefficient associated with variability of the second pair of signals at a second region of the heart. Thereafter, the first coefficient of variability is compared to the second coefficient of variability to determine a direction towards the source of the rhythm disorder.Type: ApplicationFiled: July 27, 2012Publication date: June 13, 2013Applicants: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA, TOPERA, INC.Inventors: Sanjiv Narayan, Carey Robert Briggs
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Publication number: 20130150742Abstract: An example system and method of determining regularity associated with a rhythm disorder of a heart are disclosed. In accordance with the method, a derivative of a first cardiac signal at a plurality of first time points is processed against a derivative of a second cardiac signal at a plurality of second time points to define a plurality of coordinate pairs of the first cardiac signal against the second cardiac signal. Thereafter, an index of regularity that exceeds a threshold is determined. The index of regularity indicates an approximate congruence of the plurality of coordinate pairs among the first cardiac signal and the second cardiac signal.Type: ApplicationFiled: May 14, 2012Publication date: June 13, 2013Applicants: The Regents of the University of California, Topera, Inc.Inventors: Carey Robert Briggs, Sanjiv Narayan