Patents by Inventor Gari D. Clifford
Gari D. Clifford 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: 9125577Abstract: A method for processing cardiac signals includes accepting, from a sensor system, a set of one or more signals, the signals including components of a desired cardiac signal and components of a substantially periodic interfering signal. The method is applicable for extraction of desired fetal cardiac signals from signals with interference from the maternal cardiac signal. A periodicity of the interfering signal is determined, and one or more iterations of mitigating an effect of a component of the signals that exhibit periodicity at the determined periodicity of the interfering signal are performed. In some examples, the method further includes determining a periodicity of the desired cardiac signal, and performing one or more iterations of enhancing an effect of a component of the signals that exhibit periodicity at the determined periodicity of the desired cardiac signal.Type: GrantFiled: August 11, 2014Date of Patent: September 8, 2015Assignees: MASSACHUSETTS INSTITUTE OF TECHNOLOGY, INSTITUT POLYTECHNIQUE DE GRENOBLE, UNIVERSITE JOSEPH FOURRIERInventors: Reza Sameni, Christian Jutten, Mohammad B. Shamsollahi, Gari D. Clifford
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Publication number: 20140350421Abstract: A method for processing cardiac signals includes accepting, from a sensor system, a set of one or more signals, the signals including components of a desired cardiac signal and components of a substantially periodic interfering signal. The method is applicable for extraction of desired fetal cardiac signals from signals with interference from the maternal cardiac signal. A periodicity of the interfering signal is determined, and one or more iterations of mitigating an effect of a component of the signals that exhibit periodicity at the determined periodicity of the interfering signal are performed. In some examples, the method further includes determining a periodicity of the desired cardiac signal, and performing one or more iterations of enhancing an effect of a component of the signals that exhibit periodicity at the determined periodicity of the desired cardiac signal.Type: ApplicationFiled: August 11, 2014Publication date: November 27, 2014Inventors: Reza Sameni, Christian Jutten, Mohammad B. Shamsollahi, Gari D. Clifford
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Patent number: 8805485Abstract: A method for processing cardiac signals includes accepting, from a sensor system, a set of one or more signals, the signals including components of a desired cardiac signal and components of a substantially periodic interfering signal. The method is applicable for extraction of desired fetal cardiac signals from signals with interference from the maternal cardiac signal. A periodicity of the interfering signal is determined, and one or more iterations of mitigating an effect of a component of the signals that exhibit periodicity at the determined periodicity of the interfering signal are performed. In some examples, the method further includes determining a periodicity of the desired cardiac signal, and performing one or more iterations of enhancing an effect of a component of the signals that exhibit periodicity at the determined periodicity of the desired cardiac signal.Type: GrantFiled: November 23, 2009Date of Patent: August 12, 2014Assignees: Massachusetts Institute of Technology, Institut Polytechnique de Grenoble, Universite Joseph FourrierInventors: Reza Sameni, Christian Jutten, Mohammad B. Shamsollahi, Gari D. Clifford
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Publication number: 20120083676Abstract: A method for fetal monitoring includes acquiring electrical signals from a set of electrodes, for example, a set of surface electrodes applied to a maternal abdominal region. The electrical signals are analyzed, including by performing a morphological analysis of fetal electrocardiogram signals. A clinical indicator is then determined from a result of performing the morphological analysis.Type: ApplicationFiled: September 30, 2011Publication date: April 5, 2012Applicants: Tufts Medical Center, Inc., E-Trolz, Inc., Massachusetts Institute of TechnologyInventors: Adam J. Wolfberg, Gari D. Clifford, Jay Ward
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Publication number: 20120016209Abstract: A method for fetal monitoring includes acquiring electrical signals from a set of electrodes, for example, a set of surface electrodes applied to a maternal abdominal region. The electrical signals are analyzed, including by performing a morphological analysis of fetal electrocardiogram signals. A clinical indicator is then determined from a result of performing the morphological analysis.Type: ApplicationFiled: May 23, 2011Publication date: January 19, 2012Applicants: Tufts Medical Center, Inc., E-Trolz, Inc., Massachusetts Institute of TechnologyInventors: Adam J. Wolfberg, Gari D. Clifford, Jay Ward
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Patent number: 7949389Abstract: A method for fetal monitoring includes acquiring electrical signals from a set of electrodes, for example, a set of surface electrodes applied to a maternal abdominal region. The electrical signals are analyzed, including by performing a morphological analysis of fetal electrocardiogram signals. A clinical indicator is then determined from a result of performing the morphological analysis.Type: GrantFiled: April 15, 2009Date of Patent: May 24, 2011Assignees: Tufts Medical Center, Inc., Massachusetts Institute of Technology, E-Trolz, Inc.Inventors: Adam J. Wolfberg, Gari D. Clifford, Jay Ward
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Publication number: 20100137727Abstract: A method for processing cardiac signals includes accepting, from a sensor system, a set of one or more signals, the signals including components of a desired cardiac signal and components of a substantially periodic interfering signal. The method is applicable for extraction of desired fetal cardiac signals from signals with interference from the maternal cardiac signal. A periodicity of the interfering signal is determined, and one or more iterations of mitigating an effect of a component of the signals that exhibit periodicity at the determined periodicity of the interfering signal are performed. In some examples, the method further includes determining a periodicity of the desired cardiac signal, and performing one or more iterations of enhancing an effect of a component of the signals that exhibit periodicity at the determined periodicity of the desired cardiac signal.Type: ApplicationFiled: November 23, 2009Publication date: June 3, 2010Applicants: Massachusetts Institute of Technology, Institut Polytechnique de Grenoble, Universite Joseph fourrierInventors: Reza Sameni, Christian Jutten, Mohammad B. Shamsollahi, Gari D. Clifford
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Publication number: 20090259133Abstract: A method for fetal monitoring includes acquiring electrical signals from a set of electrodes, for example, a set of surface electrodes applied to a maternal abdominal region. The electrical signals are analyzed, including by performing a morphological analysis of fetal electrocardiogram signals. A clinical indicator is then determined from a result of performing the morphological analysis.Type: ApplicationFiled: April 15, 2009Publication date: October 15, 2009Inventors: Adam J. Wolfberg, Gari D. Clifford, Jay Ward
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Publication number: 20070260151Abstract: A method, system, and computer readable medium executable on a computer for at least one of filtering, segmenting, compressing and classifying an ECG or similar signal includes the steps of fitting a nonlinear signal model to the signal using an optimization algorithm, such as nonlinear least squares, and determining features in the nonlinear signal model.Type: ApplicationFiled: September 6, 2006Publication date: November 8, 2007Inventor: Gari D. Clifford