Patents by Inventor Nathalie Virag
Nathalie Virag 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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Publication number: 20220061743Abstract: Devices, systems, and techniques are described for detecting stroke or seizure with a compact system. For example, a system includes a memory, a plurality of electrodes, and sensing circuitry configured to sense, via at least two electrodes of the plurality of electrodes, electrical signals from a patient, and generate, based on the electrical signals, physiological information. The system may also include processing circuitry configured to receive, from the sensing circuitry, the physiological information, determine, based on the physiological information, a seizure metric indicative of a seizure status of the patient and a stroke metric indicative of a stroke status of the patient, and store the seizure metric and the stroke metric in the memory. A housing may carry the plurality of electrodes and contain both of the sensing circuitry and the processing circuitry.Type: ApplicationFiled: August 27, 2021Publication date: March 3, 2022Inventors: Eric M. Christensen, Philip E. Tracton, Walton W. Baxter, III, Eric J. Panken, John Wainwright, Randal C. Schulhauser, Jonathon E. Giftakis, Nathalie Virag, Avram Scheiner, Ekaterina Ippolito
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Publication number: 20220061678Abstract: A system comprises a sensor device and processing circuitry. The sensor device comprises a housing configured to be disposed above shoulders of a patient, a plurality of electrodes on the housing, a motion sensor, and sensing circuitry configured to sense a brain electrical signal and a cardiac electrical signal via the electrodes, and a motion signal via the motion sensor. The processing circuitry is configured to determine values over time of one or more parameters from the brain electrical signal, determine values over time of one or more parameters from the cardiac electrical signal, and generate at least one of a detection, prediction, or a classification a condition of the patient based on the values and the motion signal.Type: ApplicationFiled: August 27, 2021Publication date: March 3, 2022Inventors: Randal C. Schulhauser, Jonathon E. Giftakis, Eric J. Panken, John Wainwright, Nathalie Virag, Paul G. Krause, Yong K. Cho, Scott DeFoe, Avram Scheiner, Ekaterina M. Ippolito, David A. Anderson, Saul E. Greenhut, Mark R. Boone, Richard J. O'Brien
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Publication number: 20190246926Abstract: The invention relates to a device for detecting atrial fibrillation of a subject, comprising a member comprising —mechanical connection means to wearably connect the member to a subject; —the member further comprising an optical sensor arranged to measure a signal representing a blood perfusion parameter of the subject; the member comprising the optical sensor and mechanical connection means at such relative positions that when the mechanical connection means connect the member to the subject, the optica! sensor operatively faces the subject. The device is arranged to detect atrial fibrillation of the subject based on the signal measured by the optical sensor.Type: ApplicationFiled: June 22, 2017Publication date: August 15, 2019Inventors: Nathalie Virag, Soren Aasmul, Catherine Chassard, Richard Cornelussen, Gerard Hill, Robert Leinders, Mirko De Melis, Raphael Schneider, Vasiliki Spyropoulou
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Patent number: 8812107Abstract: This disclosure is directed to techniques for treating tachyarrhythmias, such as atrial or ventricular fibrillation, in which a number of electrodes are employed to deliver electrical stimulation to a patient's heart in a manner designed to terminate the tachyarrhythmia episode.Type: GrantFiled: June 29, 2010Date of Patent: August 19, 2014Assignee: Medtronic, Inc.Inventors: Nathalie Virag, Laurent Uldry, Fredric W. Lindemans, Lukas J. Kappenberger
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Patent number: 8744584Abstract: The invention is directed to techniques for stimulating a colon of a patient to relieve chronic constipation. Specifically, a colon stimulation system applies one or more electrical stimuli to the colon of the patient in order to induce peristaltic activity in the colon to relieve chronic constipation. In accordance with the invention, the colon stimulation system induces peristaltic activity in the colon by applying an electrical stimulus to the colon to cause a portion of the colon to contract to a contracted state and removing the electrical stimulus to cause the colon to relax. While in the contracted state, the colon is substantially fully contracted.Type: GrantFiled: June 25, 2013Date of Patent: June 3, 2014Assignee: Medtronic, Inc.Inventors: Antoine Camps, Nathalie Virag, Mattia Bertschi, Pavel Kucera
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Patent number: 8738121Abstract: A system and method for distinguishing an epileptic event from a syncope event that includes sensing a signal, generating sensed intervals in response to the sensed signal, generating an indication signal in response to an occurrence of an event, determining a marginality in response to the generated indication signal and the sensed intervals, and determining the event as being one of the epileptic event and the syncope event in response to the determined marginality.Type: GrantFiled: August 23, 2010Date of Patent: May 27, 2014Assignee: Medtronic, Inc.Inventors: Nathalie Virag, H. Toby Markowitz, Rolf Vetter
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Publication number: 20130345781Abstract: The invention is directed to techniques for stimulating a colon of a patient to relieve chronic constipation. Specifically, a colon stimulation system applies one or more electrical stimuli to the colon of the patient in order to induce peristaltic activity in the colon to relieve chronic constipation. In accordance with the invention, the colon stimulation system induces peristaltic activity in the colon by applying an electrical stimulus to the colon to cause a portion of the colon to contract to a contracted state and removing the electrical stimulus to cause the colon to relax. While in the contracted state, the colon is substantially fully contracted.Type: ApplicationFiled: June 25, 2013Publication date: December 26, 2013Applicant: MEDTRONIC, INC.Inventors: Antoine Camps, Nathalie Virag, Mattia Bertschi
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Publication number: 20120046558Abstract: A system and method for distinguishing an epileptic event from a syncope event that includes sensing a signal, generating sensed intervals in response to the sensed signal, generating an indication signal in response to an occurrence of an event, determining a marginality in response to the generated indication signal and the sensed intervals, and determining the event as being one of the epileptic event and the syncope event in response to the determined marginality.Type: ApplicationFiled: August 23, 2010Publication date: February 23, 2012Inventors: Nathalie Virag, H. Toby Markowitz, Rolf Vetter
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Publication number: 20110319952Abstract: This disclosure is directed to techniques for treating tachyarrhythmias, such as atrial or ventricular fibrillation, in which a number of electrodes are employed to deliver electrical stimulation to a patient's heart in a manner designed to terminate the tachyarrhythmia episode.Type: ApplicationFiled: June 29, 2010Publication date: December 29, 2011Applicant: Medtronic, Inc.Inventors: Nathalie Virag, Laurent Uldry, Fredric W. Lindemans, Lukas J. Kappenberger
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Patent number: 8086307Abstract: This disclosure is directed to techniques for treating tachyarrhythmias, such as atrial or ventricular fibrillation, in which a number of electrodes are employed to deliver electrical stimulation to a patient's heart in a manner designed to terminate the tachyarrhythmia episode.Type: GrantFiled: July 31, 2009Date of Patent: December 27, 2011Assignee: Medtronic, Inc.Inventors: Nathalie Virag, Laurent Uldry, Fredric W. Lindemans, Lukas J. Kappenberger
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Patent number: 8068903Abstract: Systems and methods for detecting and/or treating nervous system disorders, such as seizures, are disclosed. Certain embodiments of the invention relate generally to implantable medical devices (IMDs) adapted to detect and treat nervous system disorders in patients with an IMD. Certain embodiments of the invention include detection of seizures based upon comparisons of long-term and short-term representations of physiological signals. Other embodiments include prediction of seizure activity based upon analysis of physiological signal levels. An embodiment of the invention monitors the quality of physiological signals, and may be able to compensate for signals of low signal quality. A further embodiment of the invention includes detection of seizure activity following the delivery of therapy.Type: GrantFiled: January 27, 2010Date of Patent: November 29, 2011Assignee: Medtronic, Inc.Inventors: Nathalie Virag, Rolf Vetter
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Publication number: 20110029033Abstract: This disclosure is directed to techniques for treating tachyarrhythmias, such as atrial or ventricular fibrillation, in which a number of electrodes are employed to deliver electrical stimulation to a patient's heart in a manner designed to terminate the tachyarrhythmia episode.Type: ApplicationFiled: July 31, 2009Publication date: February 3, 2011Inventors: Nathalie Virag, Laurent Uldry, Fredric W. Lindemans, Lukas J. Kappenberger
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Patent number: 7761145Abstract: Systems and methods for detecting and/or treating nervous system disorders, such as seizures, are disclosed. Certain embodiments of the invention relate generally to implantable medical devices (IMDs) adapted to detect and treat nervous system disorders in patients with an IMD. Certain embodiments of the invention include detection of seizures based upon comparisons of long-term and short-term representations of physiological signals. Other embodiments include prediction of seizure activity based upon analysis of physiological signal levels. An embodiment of the invention monitors the quality of physiological signals, and may be able to compensate for signals of low signal quality. A further embodiment of the invention includes detection of seizure activity following the delivery of therapy.Type: GrantFiled: December 12, 2006Date of Patent: July 20, 2010Assignee: Medtronic, Inc.Inventors: Nathalie Virag, Rolf Vetter
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Publication number: 20100130881Abstract: Systems and methods for detecting and/or treating nervous system disorders, such as seizures, are disclosed. Certain embodiments of the invention relate generally to implantable medical devices (IMDs) adapted to detect and treat nervous system disorders in patients with an IMD. Certain embodiments of the invention include detection of seizures based upon comparisons of long-term and short-term representations of physiological signals. Other embodiments include prediction of seizure activity based upon analysis of physiological signal levels. An embodiment of the invention monitors the quality of physiological signals, and may be able to compensate for signals of low signal quality. A further embodiment of the invention includes detection of seizure activity following the delivery of therapy.Type: ApplicationFiled: January 27, 2010Publication date: May 27, 2010Applicant: MEDTRONIC, INC.Inventors: Nathalie Virag, Rolf Vetter
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Patent number: 7647106Abstract: It has been discovered that a change in posture that results in an increase in orthostatic stress, when followed by a withdrawal of sympathetic nervous activity, may indicate a future onset of vasovagal syncope (VVS). The invention is directed to devices and techniques for early detection of an episode of VVS so that therapies may be applied in advance of the episode to prevent the episode from occurring. Detection of a posture transition triggers a device such as an implanted pacemaker to determine an indicator of an autonomic nervous system activity of the patient. As a function of this determination, the device estimates a probability that the patient will experience VVS. When the probability exceeds a threshold, preventative therapy may be applied to address the VVS and to reduce the risk that the patient will faint.Type: GrantFiled: April 23, 2003Date of Patent: January 12, 2010Assignee: Medtronic, Inc.Inventors: Nathalie Virag, Rolf Vetter, Richard Sutton
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Publication number: 20070249954Abstract: Systems and methods for detecting and/or treating nervous system disorders, such as seizures, are disclosed. Certain embodiments of the invention relate generally to implantable medical devices (IMDs) adapted to detect and treat nervous system disorders in patients with an IMD. Certain embodiments of the invention include detection of seizures based upon comparisons of long-term and short-term representations of physiological signals. Other embodiments include prediction of seizure activity based upon analysis of physiological signal levels. An embodiment of the invention monitors the quality of physiological signals, and may be able to compensate for signals of low signal quality. A further embodiment of the invention includes detection of seizure activity following the delivery of therapy.Type: ApplicationFiled: December 12, 2006Publication date: October 25, 2007Applicant: MEDTRONIC, INC.Inventors: Nathalie Virag, Rolf Vetter
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Publication number: 20070112391Abstract: The invention is directed to techniques for stimulating a colon of a patient to relieve chronic constipation. Specifically, a colon stimulation system applies one or more electrical stimuli to the colon of the patient in order to induce peristaltic activity in the colon to relieve chronic constipation. In accordance with the invention, the colon stimulation system induces peristaltic activity in the colon by applying an electrical stimulus to the colon to cause a portion of the colon to contract to a contracted state and removing the electrical stimulus to cause the colon to relax. While in the contracted state, the colon is substantially fully contracted.Type: ApplicationFiled: January 5, 2007Publication date: May 17, 2007Applicant: MEDTRONIC, INC.Inventors: Antoine Camps, Nathalie Virag, Mattia Bertschi, Pavel Kucera
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Publication number: 20070070800Abstract: A device is worn adjacent to tissue of a patient to detect vasovagal syncope (VVS). The device includes a photoplethysmographic sensor that measures a plethysmographic signal through tissue, and a processor that derives an indicator of an autonomous nervous system (ANS) activity from the plethysmographic signal and estimates a probability that the patient will experience VVS as a function of the indicator.Type: ApplicationFiled: September 27, 2005Publication date: March 29, 2007Inventors: Nathalie Virag, Rolf Vetter
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Publication number: 20040215263Abstract: It has been discovered that a change in posture that results in an increase in orthostatic stress, when followed by a withdrawal of sympathetic nervous activity, may indicate a future onset of vasovagal syncope (VVS). The invention is directed to devices and techniques for early detection of an episode of VVS so that therapies may be applied in advance of the episode to prevent the episode from occurring. Detection of a posture transition triggers a device such as an implanted pacemaker to determine an indicator of an autonomic nervous system activity of the patient. As a function of this determination, the device estimates a probability that the patient will experience VVS. When the probability exceeds a threshold, preventative therapy may be applied to address the VVS and to reduce the risk that the patient will faint.Type: ApplicationFiled: April 23, 2003Publication date: October 28, 2004Inventors: Nathalie Virag, Rolf Vetter, Richard Sutton
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Publication number: 20040215283Abstract: The invention is directed to techniques for stimulating a colon of a patient to relieve chronic constipation. Specifically, a colon stimulation system applies one or more electrical stimuli to the colon of the patient in order to induce peristaltic activity in the colon to relieve chronic constipation. In accordance with the invention, the colon stimulation system induces peristaltic activity in the colon by applying an electrical stimulus to the colon to cause a portion of the colon to contract to a contracted state and removing the electrical stimulus to cause the colon to relax. While in the contracted state, the colon is substantially fully contracted.Type: ApplicationFiled: April 23, 2003Publication date: October 28, 2004Inventors: Antoine Camps, Nathalie Virag, Mattia Bertschi, Pavel Kucera