Patents by Inventor Carlos Alberto Ricci
Carlos Alberto Ricci 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: 10264985Abstract: Medical devices and methods for making and using medical devices are disclosed. An example system for mapping the electrical activity of the heart includes a catheter shaft. The catheter shaft includes a plurality of electrodes including a first and a second electrode. The system also includes a processor. The processor is capable of collecting a first signal corresponding to a first electrode over a time period and generating a first time-frequency distribution corresponding to the first signal. The first time-frequency distribution includes a first dominant frequency value representation occurring at one or more first base frequencies. The processor is also capable of applying a filter to the first signal or derivatives thereof to determine whether the first dominant frequency value representation includes a single first dominant frequency value at a first base frequency or two or more first dominant frequency values at two or more base frequencies.Type: GrantFiled: October 1, 2018Date of Patent: April 23, 2019Assignee: Boston Scientific Scimed, Inc.Inventors: Jacob I. Laughner, Carlos Alberto Ricci, Vladimir V. Kovtun, Shibaji Shome, Pramodsingh H. Thakur, Allan C. Shuros, Kevin J. Stalsberg
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Publication number: 20190029535Abstract: Medical devices and methods for making and using medical devices are disclosed. An example system for mapping the electrical activity of the heart includes a catheter shaft. The catheter shaft includes a plurality of electrodes including a first and a second electrode. The system also includes a processor. The processor is capable of collecting a first signal corresponding to a first electrode over a time period and generating a first time-frequency distribution corresponding to the first signal. The first time-frequency distribution includes a first dominant frequency value representation occurring at one or more first base frequencies. The processor is also capable of applying a filter to the first signal or derivatives thereof to determine whether the first dominant frequency value representation includes a single first dominant frequency value at a first base frequency or two or more first dominant frequency values at two or more base frequencies.Type: ApplicationFiled: October 1, 2018Publication date: January 31, 2019Inventors: Jacob I. Laughner, Carlos Alberto Ricci, Vladimir V. Kovtun, Shibaji Shome, Pramodsingh H. Thakur, Allan C. Shuros, Kevin J. Stalsberg
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Patent number: 10085659Abstract: Medical devices and methods for making and using medical devices are disclosed. An example system for mapping the electrical activity of the heart includes a catheter shaft. The catheter shaft includes a plurality of electrodes including a first and a second electrode. The system also includes a processor. The processor is capable of collecting a first signal corresponding to a first electrode over a time period and generating a first time-frequency distribution corresponding to the first signal. The first time-frequency distribution includes a first dominant frequency value representation occurring at one or more first base frequencies. The processor is also capable of applying a filter to the first signal or derivatives thereof to determine whether the first dominant frequency value representation includes a single first dominant frequency value at a first base frequency or two or more first dominant frequency values at two or more base frequencies.Type: GrantFiled: October 2, 2015Date of Patent: October 2, 2018Assignee: BOSTON SCIENTIFIC SCIMED, INC.Inventors: Jacob I. Laughner, Carlos Alberto Ricci, Vladimir V. Kovtun, Shibaji Shome, Pramodsingh H. Thakur, Allan C. Shuros, Kevin J. Stalsberg
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Patent number: 9649040Abstract: Medical devices and methods for making and using medical devices are disclosed. An example system for mapping the electrical activity of the heart includes a catheter shaft. The catheter shaft includes a plurality of electrodes including a first electrode and a second electrode. The system also includes a processor. The processor is capable of collecting a first signal corresponding to the first electrode and a second signal corresponding to the second electrode. Collecting the first and second signals occurs over a time period. The processor is also capable of generating a first time-frequency distribution corresponding to the first signal, identifying a first dominant frequency value occurring at a first dominant frequency and a first time point, generating a second time-frequency distribution corresponding to the second signal, identifying a second dominant frequency value occurring at a second dominant frequency and a second time point and determining an attraction point.Type: GrantFiled: October 2, 2015Date of Patent: May 16, 2017Assignee: BOSTON SCIENTIFIC SCIMED, INC.Inventors: Jacob I. Laughner, Carlos Alberto Ricci, Vladimir V. Kovtun, Shibaji Shome, Pramodsingh H. Thakur, Allan C. Shuros, Kevin J. Stalsberg
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Patent number: 9579064Abstract: Medical devices and methods for making and using medical devices are disclosed. A method for removing an artifact of a biological reference signal present in a biological source signal may comprise sensing a biological reference signal with one or more electrodes and sensing a biological source signal, wherein the biological source signal comprises an artifact of the biological reference signal. The method may further comprise determining, based on the biological reference signal, the artifact of the biological reference signal and subtracting the artifact of the biological reference signal from the sensed biological source signal.Type: GrantFiled: May 20, 2015Date of Patent: February 28, 2017Assignee: Boston Scientific Scimed Inc.Inventors: Vladimir V. Kovtun, Carlos Alberto Ricci, Pramodsingh Hirasingh Thakur, Shibaji Shome
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Publication number: 20160183810Abstract: Medical devices and methods for making and using medical devices are disclosed. An example system for mapping the electrical activity of the heart includes a catheter shaft. The catheter shaft includes a plurality of electrodes including a first and a second electrode. The system also includes a processor. The processor is capable of collecting a first signal corresponding to a first electrode over a time period and generating a first time-frequency distribution corresponding to the first signal. The first time-frequency distribution includes a first dominant frequency value representation occurring at one or more first base frequencies. The processor is also capable of applying a filter to the first signal or derivatives thereof to determine whether the first dominant frequency value representation includes a single first dominant frequency value at a first base frequency or two or more first dominant frequency values at two or more base frequencies.Type: ApplicationFiled: October 2, 2015Publication date: June 30, 2016Inventors: Jacob I. Laughner, Carlos Alberto Ricci, Vladimir V. Kovtun, Shibaji Shome, Pramodsingh H. Thakur, Allan C. Shuros, Kevin J. Stalsberg
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Publication number: 20160183809Abstract: Medical devices and methods for making and using medical devices are disclosed. An example system for mapping the electrical activity of the heart includes a catheter shaft. The catheter shaft includes a plurality of electrodes including a first electrode and a second electrode. The system also includes a processor. The processor is capable of collecting a first signal corresponding to the first electrode and a second signal corresponding to the second electrode. Collecting the first and second signals occurs over a time period. The processor is also capable of generating a first time-frequency distribution corresponding to the first signal, identifying a first dominant frequency value occurring at a first dominant frequency and a first time point, generating a second time-frequency distribution corresponding to the second signal, identifying a second dominant frequency value occurring at a second dominant frequency and a second time point and determining an attraction point.Type: ApplicationFiled: October 2, 2015Publication date: June 30, 2016Inventors: Jacob I. Laughner, Carlos Alberto Ricci, Vladimir V. Kovtun, Shibaji Shome, Pramodsingh H. Thakur, Allan C. Shuros, Kevin J. Stalsberg
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Publication number: 20150342536Abstract: Medical devices and methods for making and using medical devices are disclosed. A method for removing an artifact of a biological reference signal present in a biological source signal may comprise sensing a biological reference signal with one or more electrodes and sensing a biological source signal, wherein the biological source signal comprises an artifact of the biological reference signal. The method may further comprise determining, based on the biological reference signal, the artifact of the biological reference signal and subtracting the artifact of the biological reference signal from the sensed biological source signal.Type: ApplicationFiled: May 20, 2015Publication date: December 3, 2015Applicant: BOSTON SCIENTIFIC SCIMED, INC.Inventors: VLADIMIR V. KOVTUN, CARLOS ALBERTO RICCI, PRAMODSINGH HIRASINGH THAKUR, SHIBAJI SHOME
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Patent number: 9119547Abstract: Cardiac systems and methods provide for discriminating between supraventricular tachyarrhythmia and ventricular tachyarrhythmia based on a determination that the patient's supraventricular rhythm exhibits rate dependency. One approach involves determining if a patient's supraventricular rhythm exhibits rate dependent morphology. If the patient's supraventricular rhythm is determined to exhibit rate dependent morphology, an implantable device classifies a detected tachyarrhythmia episode based on one or more templates selected from a plurality of rate-indexed templates stored in the device. Determining if the supraventricular rhythm exhibits rate dependent morphology may also include determining one or more rates at which the rate dependent morphology occurs.Type: GrantFiled: January 12, 2010Date of Patent: September 1, 2015Assignee: Cardiac Pacemakers, Inc.Inventors: Shelley Cazares, Jaeho Kim, Yayun Lin, Carlos Alberto Ricci
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Patent number: 8626276Abstract: Cardiac monitoring and/or stimulation methods and systems that provide one or more of monitoring, diagnosing, defibrillation, and pacing. Cardiac signal separation is employed to detect, monitor, track and/or trend ischemia using cardiac activation sequence information. Ischemia detection may involve sensing composite cardiac signals using implantable electrodes, and performing a signal separation that produces one or more cardiac activation signal vectors associated with one or more cardiac activation sequences. A change in the signal vector may be detected using subsequent separations. The change may be an elevation or depression of the ST segment of a cardiac cycle or other change indicative of myocardial ischemia, myocardial infarction, or other pathological change. The change may be used to predict, quantify, and/or qualify an event such as an arrhythmia, a myocardial infarction, or other pathologic change. Information associated with the vectors may be stored and used to track the vectors.Type: GrantFiled: July 30, 2010Date of Patent: January 7, 2014Assignee: Cardiac Pacemakers, Inc.Inventors: Yi Zhang, Scott A. Meyer, Jeffrey E. Stahmann, Carlos Alberto Ricci, Marina Brockway, Aaron R. McCabe, Yinghong Yu, Donald L. Hopper
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Publication number: 20110144511Abstract: Cardiac monitoring and/or stimulation methods and systems provide monitoring, diagnosis, and defibrillation and/or pacing therapies. A signal processor receives a plurality of composite signals associated with a plurality of sources, performs a source separation, and produces one or more cardiac signal vectors associated with all or a portion of one or more cardiac activation sequences based on the source separation. A method of signal separation involves detecting a change in a characteristic of the cardiac signal vector relative to a baseline. One or more vectors and/or activation sequences may be selected, and information associated with the vectors and/or activation sequences may be stored and tracked.Type: ApplicationFiled: February 15, 2011Publication date: June 16, 2011Inventors: Yi Zhang, Scott A. Meyer, Aaron McCabe, Jeffrey E. Stahmann, Yinghong Yu, Carlos Alberto Ricci
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Publication number: 20110137192Abstract: Cardiac monitoring and/or stimulation methods and systems provide for monitoring, diagnosing, defibrillation and pacing therapies, or a combination of these capabilities, including cardiac systems incorporating or cooperating with neuro-stimulating devices, drug pumps, or other therapies. Embodiments of the present invention relate generally to implantable medical devices employing automated cardiac activation sequence monitoring and/or tracking for arrhythmia discrimination. Embodiments of the invention are directed to devices and methods involving sensing a plurality of composite cardiac signals using a plurality of implantable electrodes. A source separation is performed using the sensed plurality of composite cardiac signals and the separation produces one or more cardiac signal vectors associated with one or more cardiac activation sequences that is indicative of ischemia. A change of the one or more cardiac signal vectors is detected using the one or more cardiac signal vectors.Type: ApplicationFiled: February 15, 2011Publication date: June 9, 2011Inventors: Yi Zhang, Carlos Alberto Ricci, Jeffrey E. Stahmann, Aaron R. McCabe, Scott A. Meyer, Yinghong Yu
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Patent number: 7941206Abstract: Cardiac monitoring and/or stimulation methods and systems provide monitoring, defibrillation and/or pacing therapies. A signal processor receives a plurality of composite signals associated with a plurality of sources, separates a signal using a source separation algorithm, and identifies a cardiac signal using a selected vector. The signal processor may iteratively separate signals from the plurality of composite signals until the cardiac signal is identified. The selected vector may be updated if desired or necessary. A method of signal separation involves detecting a plurality of composite signals at a plurality of locations, separating a signal using source separation, and selecting a vector that provides a cardiac signal. The separation may include a principal component analysis and/or an independent component analysis.Type: GrantFiled: January 27, 2010Date of Patent: May 10, 2011Assignee: Cardiac Pacemakers, Inc.Inventors: Yi Zhang, Marina Brockway, Carlos Alberto Ricci, Ronald W. Heil, Douglas R. Daum, Robert J. Sweeney, Aaron R. McCabe
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Patent number: 7917196Abstract: Cardiac monitoring and/or stimulation methods and systems provide for monitoring, diagnosing, defibrillation and pacing therapies, or a combination of these capabilities, including cardiac systems incorporating or cooperating with neuro-stimulating devices, drug pumps, or other therapies. Embodiments relate generally to implantable medical devices employing automated cardiac activation sequence monitoring and/or tracking for arrhythmia discrimination. Embodiments are directed to devices and methods involving sensing a plurality of composite cardiac signals using a plurality of implantable electrodes. A source separation is performed using the sensed plurality of composite cardiac signals and the separation produces one or more cardiac signal vectors associated with one or more cardiac activation sequences that is indicative of ischemia. A change of the one or more cardiac signal vectors is detected using the one or more cardiac signal vectors.Type: GrantFiled: May 9, 2005Date of Patent: March 29, 2011Assignee: Cardiac Pacemakers, Inc.Inventors: Yi Zhang, Carlos Alberto Ricci, Jeffrey E. Stahmann, Aaron R. McCabe, Scott A. Meyer, Yinghong Yu
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Patent number: 7890159Abstract: Cardiac monitoring and/or stimulation methods and systems provide monitoring, diagnosis, and defibrillation and/or pacing therapies. A signal processor receives a plurality of composite signals associated with a plurality of sources, performs a source separation, and produces one or more cardiac signal vectors associated with all or a portion of one or more cardiac activation sequences based on the source separation. A method of signal separation involves detecting a change in a characteristic of the cardiac signal vector relative to a baseline. One or more vectors and/or activation sequences may be selected, and information associated with the vectors and/or activation sequences may be stored and tracked.Type: GrantFiled: September 30, 2004Date of Patent: February 15, 2011Assignee: Cardiac Pacemakers, Inc.Inventors: Yi Zhang, Scott A. Meyer, Aaron McCabe, Jeffrey E. Stahmann, Yinghong Yu, Carlos Alberto Ricci
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Publication number: 20100298729Abstract: Cardiac monitoring and/or stimulation methods and systems that provide one or more of monitoring, diagnosing, defibrillation, and pacing. Cardiac signal separation is employed to detect, monitor, track and/or trend ischemia using cardiac activation sequence information. Ischemia detection may involve sensing composite cardiac signals using implantable electrodes, and performing a signal separation that produces one or more cardiac activation signal vectors associated with one or more cardiac activation sequences. A change in the signal vector may be detected using subsequent separations. The change may be an elevation or depression of the ST segment of a cardiac cycle or other change indicative of myocardial ischemia, myocardial infarction, or other pathological change. The change may be used to predict, quantify, and/or qualify an event such as an arrhythmia, a myocardial infarction, or other pathologic change. Information associated with the vectors may be stored and used to track the vectors.Type: ApplicationFiled: July 30, 2010Publication date: November 25, 2010Inventors: Yi Zhang, Scott A. Meyer, Jeffrey E. Stahmann, Carlos Alberto Ricci, Marina Brockway, Aaron R. McCabe, Yinghong Yu, Donald L. Hopper
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Patent number: 7797036Abstract: Cardiac monitoring and/or stimulation methods and systems that provide one or more of monitoring, diagnosing, defibrillation, and pacing. Cardiac signal separation is employed to detect, monitor, track and/or trend ischemia using cardiac activation sequence information. Ischemia detection may involve sensing composite cardiac signals using implantable electrodes, and performing a signal separation that produces one or more cardiac activation signal vectors associated with one or more cardiac activation sequences. A change in the signal vector may be detected using subsequent separations. The change may be an elevation or depression of the ST segment of a cardiac cycle or other change indicative of myocardial ischemia, myocardial infarction, or other pathological change. The change may be used to predict, quantify, and/or qualify an event such as an arrhythmia, a myocardial infarction, or other pathologic change. Information associated with the vectors may be stored and used to track the vectors.Type: GrantFiled: March 14, 2005Date of Patent: September 14, 2010Assignee: Cardiac Pacemakers, Inc.Inventors: Yi Zhang, Scott A. Meyer, Jeffrey E. Stahmann, Carlos Alberto Ricci, Marina Brockway, Aaron R. McCabe, Yinghong Yu, Donald I. Hopper
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Publication number: 20100198283Abstract: Cardiac monitoring and/or stimulation methods and systems provide monitoring, defibrillation and/or pacing therapies. A signal processor receives a plurality of composite signals associated with a plurality of sources, separates a signal using a source separation algorithm, and identifies a cardiac signal using a selected vector. The signal processor may iteratively separate signals from the plurality of composite signals until the cardiac signal is identified. The selected vector may be updated if desired or necessary. A method of signal separation involves detecting a plurality of composite signals at a plurality of locations, separating a signal using source separation, and selecting a vector that provides a cardiac signal. The separation may include a principal component analysis and/or an independent component analysis.Type: ApplicationFiled: January 27, 2010Publication date: August 5, 2010Inventors: Yi Zhang, Marina Brockway, Carlos Alberto Ricci, Ron Heil, Douglas R. Daum, Robert J. Sweeney, Aaron McCabe
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Patent number: 7706866Abstract: Cardiac monitoring and/or stimulation methods and systems provide monitoring, defibrillation and/or pacing therapies. A signal processor receives a plurality of composite signals associated with a plurality of sources, separates a signal using a source separation algorithm, and identifies a cardiac signal using a selected vector. The signal processor may iteratively separate signals from the plurality of composite signals until the cardiac signal is identified. The selected vector may be updated if desired or necessary. A method of signal separation involves detecting a plurality of composite signals at a plurality of locations, separating a signal using source separation, and selecting a vector that provides a cardiac signal. The separation may include a principal component analysis and/or an independent component analysis.Type: GrantFiled: June 24, 2004Date of Patent: April 27, 2010Assignee: Cardiac Pacemakers, Inc.Inventors: Yi Zhang, Marina Brockway, Carlos Alberto Ricci, Ron Heil, Douglas R. Daum, Robert J. Sweeney, Aaron McCabe
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Publication number: 20090312813Abstract: Approaches for determining threshold values for one or more arrhythmia rate zones and/or the number of rate zones are described. A probability function for heart rate is determined using collected and measured heart rate values. One or more heart rate probability values are selected. Thresholds for arrhythmia rate zones are determined from the probability function based on the selected probability values. Determining the rate zone thresholds may involve determining a threshold for a lower rate limit and/or determining one or more tachyarrhythmia rate zone thresholds. The number of rate zones may also be determined based on the probability function.Type: ApplicationFiled: August 21, 2009Publication date: December 17, 2009Inventors: Shelley Marie Cazares, Carlos Alberto Ricci, Jaeho Kim