Patents by Inventor John C. Stroebel
John C. Stroebel 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: 20230381523Abstract: Ventricle-from-atrium (VfA) devices, systems, and methods may be configured to monitor a single channel of cardiac electrical activity and determine atrial events and ventricular events based on the single channel of cardiac electrical activity. Various processing, windowing, and thresholding may be used to identify atrial events and ventricular events within the single channel of cardiac electrical activity.Type: ApplicationFiled: May 25, 2022Publication date: November 30, 2023Inventors: Yanina Grinberg, Troy E. Jackson, Eric R. Williams, John C. Stroebel, Karen J. Kleckner, Todd J. Sheldon, Mackenzie E. Hall, Saul E. Greenhut
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Publication number: 20230149721Abstract: A method includes detecting, by an implantable medical device (IMD), attachment to the IMD of at least one implantable medical lead with at least one electrode; and triggering by the IMD, based on the detecting of the attachment to the IMD of the at least one medical lead, a device test sequence in which the IMD performs the following qualification tests over an evaluation period: detecting an impedance for at least one electrical path that includes the at least one electrode to determine a connection status of the IMD to the at least one electrode; and comparing EGM (electrogram) amplitudes of the patient over an EGM test period against a predetermined threshold.Type: ApplicationFiled: November 17, 2022Publication date: May 18, 2023Inventors: John C. Stroebel, Maureen E. Lybarger, Mohac Tekmen, Greggory R. Herr, John D. Golnitz, Kristen J. Cattin, Eric A. Schilling, Eric R. Williams, Teresa A. Whitman, Mikayle A Holm, Michelle M. Galarneau, Tara M. Treml, Derek W. Prusener
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Patent number: 9931509Abstract: A pacing mode is provided, in one embodiment, that permits missed or skipped ventricular beats. The mode monitors a full cardiac cycle (A-A interval) for the presence of intrinsic ventricular activity. If ventricular activity is present, a flag is set that is valid for the next cardiac cycle. At the beginning of the next cardiac cycle, the device determines if the flag is present. So long as the flag is present, the device will not deliver a ventricular pacing pulse in that cycle, even if there is no intrinsic ventricular activity. If there is no flag present at the start of a given cardiac cycle, a ventricular pacing pulse is delivered and this ventricular activity sets a flag for the subsequent cardiac cycle.Type: GrantFiled: March 5, 2012Date of Patent: April 3, 2018Assignee: Medtronic, Inc.Inventor: John C. Stroebel
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Patent number: 9375579Abstract: A preferred atrial-based pacing method and apparatus is provided using an intelligent cardiac pacing system to having the ability to continue atrial-based pacing as long as relatively reliable AV conduction is present. In the event that such relatively reliable AV conduction is not present, mode switching to a DDD/R or a DDI/R pacing mode while continually biased to mode switch back to atrial-based pacing. The standard or relatively reliable AV conduction may be changed either automatically or manually. This increases pacing that utilizes natural AV conduction however possible so as to gain all the benefits of cardiac contractile properties resulting therefrom, while tolerating the occasional missed ventricular depolarization (i.e., non-conducted P-wave). In the event where relatively reliable AV conduction is not present, the pacing mode is switched to a DDD/R mode while detecting a return of the relatively reliable AV conduction (and resulting mode switch to preferred atrial based pacing).Type: GrantFiled: June 7, 2011Date of Patent: June 28, 2016Assignee: Medtronic, Inc.Inventors: David A. Casavant, Paul Belk, Thomas J. Mullen, John C. Stroebel
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Patent number: 8755885Abstract: The invention relates to medical devices such as pacemakers, pulse generators, cardioverter-defibrillators and the like and more particularly relates to modular and reconfigurable medical system platforms and methods of designing, testing, controlling and implementing diverse therapies, diagnostics, physiologic sensors and related instrumentation using said medical system platforms. Methods, systems and devices provide a new design platform for implantable and external medical devices such as pacemakers, defibrillators, neurostimulators, heart monitors, etc. A real-time, highly flexible system of software and hardware modules enables both prototypes and products to respond to patient and customer needs with greater design and manufacturing efficiency. Certain embodiments integrate a general-purpose processor with interface circuitry to provide a standard platform for implementing new and conventional therapies with software models rather than custom circuitry.Type: GrantFiled: April 28, 2005Date of Patent: June 17, 2014Assignee: Medtronic, Inc.Inventors: D. Curtis Deno, Jeffrey D. Wilkinson, John C. Stroebel
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Patent number: 8744579Abstract: The invention provides methods and apparatus for determining in a non-tracking pacing mode (e.g., DDI/R, VVI/R) whether a ventricular pacing stimulus is capturing a paced ventricle, including some or all of the following aspects. For example, increasing a ventricular pacing rate a nominal amount to an overdrive pacing rate higher than a most recent heart rate and evaluating a conduction interval from a first pacing ventricle to a second sensing ventricle and then continuing to monitor the underlying rate to ensure that a threshold testing pacing rate will not exceed a predetermined minimum interval and providing pacing stimulation to the first ventricle and sensing the second ventricle to determine whether the pacing stimulation to the first ventricle was one of sub-threshold and supra-threshold. The methods and apparatus are especially useful in conjunction with ensuring actual delivery of a ventricular pacing regime (e.g., cardiac resynchronization therapy or “CRT”).Type: GrantFiled: February 4, 2010Date of Patent: June 3, 2014Assignee: Medtronic, Inc.Inventors: Purvee P. Parikh, John C. Stroebel, Todd J. Sheldon, Karen J. Kleckner
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Publication number: 20120165896Abstract: A pacing mode is provided, in one embodiment, that permits missed or skipped ventricular beats. The mode monitors a full cardiac cycle (A-A interval) for the presence of intrinsic ventricular activity. If ventricular activity is present, a flag is set that is valid for the next cardiac cycle. At the beginning of the next cardiac cycle, the device determines if the flag is present. So long as the flag is present, the device will not deliver a ventricular pacing pulse in that cycle, even if there is no intrinsic ventricular activity. If there is no flag present at the start of a given cardiac cycle, a ventricular pacing pulse is delivered and this ventricular activity sets a flag for the subsequent cardiac cycle.Type: ApplicationFiled: March 5, 2012Publication date: June 28, 2012Applicant: Medtronic, Inc.Inventor: John C. Stroebel
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Publication number: 20110301656Abstract: A preferred atrial-based pacing method and apparatus is provided using an intelligent cardiac pacing system to having the ability to continue atrial-based pacing as long as relatively reliable AV conduction is present. In the event that such relatively reliable AV conduction is not present, mode switching to a DDD/R or a DDI/R pacing mode while continually biased to mode switch back to atrial-based pacing. The standard or relatively reliable AV conduction may be changed either automatically or manually. This increases pacing that utilizes natural AV conduction however possible so as to gain all the benefits of cardiac contractile properties resulting therefrom, while tolerating the occasional missed ventricular depolarization (i.e., non-conducted P-wave). In the event where relatively reliable AV conduction is not present, the pacing mode is switched to a DDD/R mode while detecting a return of the relatively reliable AV conduction (and resulting mode switch to preferred atrial based pacing).Type: ApplicationFiled: June 7, 2011Publication date: December 8, 2011Applicant: Medtronic, Inc.Inventors: David A. Casavant, Paul Belk, Thomas J. Mullen, John C. Stroebel
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Patent number: 8060202Abstract: Pacing parameters are provided to address cross talk and intrinsic ventricular events occurring within a predefined blanking period following an atrial event. The parameters are used in conjunction with protocol for minimizing or reducing ventricular pacing, wherein ignoring intrinsic ventricular events during the blanking period might otherwise affect the performance of the protocol.Type: GrantFiled: October 6, 2009Date of Patent: November 15, 2011Assignee: Medtronic, Inc.Inventors: Robert A. Betzold, David A. Casavant, Paul A. Belk, Thomas J. Mullen, John C. Stroebel, Steven R. Hornberger, Todd J. Sheldon, Douglas A. Peterson
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Patent number: 7957800Abstract: A preferred atrial-based pacing method and apparatus is provided using an intelligent cardiac pacing system to having the ability to continue atrial-based pacing as long as relatively reliable AV conduction is present. In the event that such relatively reliable AV conduction is not present, mode switching to a DDD/R or a DDI/R pacing mode while continually biased to mode switch back to atrial-based pacing. The standard or relatively reliable AV conduction may be changed either automatically or manually. This increases pacing that utilizes natural AV conduction however possible so as to gain all the benefits of cardiac contractile properties resulting therefrom, while tolerating the occasional missed ventricular depolarization (i.e., non-conducted P-wave). In the event where relatively reliable AV conduction is not present, the pacing mode is switched to a DDD/R mode while detecting a return of the relatively reliable AV conduction (and resulting mode switch to preferred atrial based pacing).Type: GrantFiled: October 17, 2006Date of Patent: June 7, 2011Assignee: Medtronic, Inc.Inventors: David A. Casavant, Paul Belk, Thomas J. Mullen, John C. Stroebel
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Patent number: 7925345Abstract: An ADI/R mode is implemented using an intelligent pacing system to continually monitor ventricular response. This ensures AV conduction whenever possible so as to gain all the benefits of cardiac contractile properties resulting from native R-waves. In the event where AV conduction is blocked, the pacing mode is switched to a DDD/R mode to ensure a paced R-wave. Thereafter, subsequent to a completed interval of a p-wave, ADI/R pacing resumes to monitor ventricular response.Type: GrantFiled: October 31, 2006Date of Patent: April 12, 2011Assignee: Medtronic, Inc.Inventors: David Casavant, Paul A. Belk, Thomas J. Mullen, John C. Stroebel
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Patent number: 7913015Abstract: A bus system is provided for implantable medical devices. The bus system provides for flexible and reliable communication between subsystems in an implantable medical device. The bus system facilitates a wide variety of communications between various subsystems. These various subsystems can include one or more sensing devices, processors, data storage devices, patient alert devices, power management devices, signal processing and other devices implemented to perform a variety of different functions.Type: GrantFiled: February 6, 2009Date of Patent: March 22, 2011Assignee: Medtronic, Inc.Inventors: Todd A. Kallmyer, Kevin K. Walsh, Javaid Masoud, Xander Evers, John C. Stroebel, James Ericksen, Mark A. Stockburger, Paul J. Huelskamp
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Patent number: 7881793Abstract: A pacing protocol is provided that reduces or minimizes ventricular pacing in favor of intrinsic conduction. When operating in a mode that provides ventricular pacing, a series of conduction checks are performed to determine if intrinsic conduction has returned. These conduction checks occur according to a predetermined pattern that general includes longer intervals between subsequent attempts. A maximum interval is provided such that conduction checks are not repeated sequentially at the same time of day when at this maximum interval.Type: GrantFiled: March 31, 2005Date of Patent: February 1, 2011Assignee: Medtronic, Inc.Inventors: Robert A. Betzold, David A. Casavant, Paul A. Belk, Thomas J. Mullen, John C. Stroebel
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Patent number: 7738955Abstract: A pacing protocol is provided that reduces or minimizes ventricular pacing in favor of intrinsic conduction. When operating in a mode that provides ventricular pacing, a series of conduction checks are performed to determine if intrinsic conduction has returned. These conduction checks occur according to a predetermined pattern that generally includes longer intervals between subsequent attempts. The AV interval provided for dual chamber based pacing is modulated and generally moves from a larger value to a nominal value as the interval between unsuccessful conduction checks increases.Type: GrantFiled: April 27, 2005Date of Patent: June 15, 2010Assignee: Medtronic, Inc.Inventors: Michael O. Sweeney, David A. Casavant, Robert A. Betzold, Paul A. Belk, Thomas J. Mullen, John C. Stroebel
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Publication number: 20100137935Abstract: The invention provides methods and apparatus for determining in a non-tracking pacing mode (e.g., DDI/R, VVI/R) whether a ventricular pacing stimulus is capturing a paced ventricle, including some or all of the following aspects. For example, increasing a ventricular pacing rate a nominal amount to an overdrive pacing rate higher than a most recent heart rate and evaluating a conduction interval from a first pacing ventricle to a second sensing ventricle and then continuing to monitor the underlying rate to ensure that a threshold testing pacing rate will not exceed a predetermined minimum interval and providing pacing stimulation to the first ventricle and sensing the second ventricle to determine whether the pacing stimulation to the first ventricle was one of sub-threshold and supra-threshold. The methods and apparatus are especially useful in conjunction with ensuring actual delivery of a ventricular pacing regime (e.g., cardiac resynchronization therapy or “CRT”).Type: ApplicationFiled: February 4, 2010Publication date: June 3, 2010Applicant: Medtronic, Inc.Inventors: Purvee P. Parikh, John C. Stroebel, Todd J. Sheldon, Karen J. Kleckner
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Publication number: 20100087882Abstract: Pacing parameters are provided to address cross talk and intrinsic ventricular events occurring within a predefined blanking period following an atrial event. The parameters are used in conjunction with protocol for minimizing or reducing ventricular pacing, wherein ignoring intrinsic ventricular events during the blanking period might otherwise affect the performance of the protocol.Type: ApplicationFiled: October 6, 2009Publication date: April 8, 2010Applicant: Medtronic, Inc.Inventors: Robert A. Betzold, David A. Casavant, Paul A. Belk, Thomas J. Mullen, John C. Stroebel, Steven R. Hornberger, Todd J. Sheldon, Douglas A. Peterson
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Patent number: 7684863Abstract: The invention provides methods and apparatus for determining in a non-tracking pacing mode (e.g., DDI/R, VVI/R) whether a ventricular pacing stimulus is capturing a paced ventricle, including some or all of the following aspects. For example, increasing a ventricular pacing rate a nominal amount to an overdrive pacing rate higher than a most recent heart rate and evaluating a conduction interval from a first pacing ventricle to a second sensing ventricle and then continuing to monitor the underlying rate to ensure that a threshold testing pacing rate will not exceed a predetermined minimum interval and providing pacing stimulation to the first ventricle and sensing the second ventricle to determine whether the pacing stimulation to the first ventricle was one of sub-threshold and supra-threshold. The methods and apparatus are especially useful in conjunction with ensuring actual delivery of a ventricular pacing regime (e.g., cardiac resynchronization therapy or “CRT”).Type: GrantFiled: December 20, 2005Date of Patent: March 23, 2010Assignee: Medtronic, Inc.Inventors: Purvee P. Parikh, John C. Stroebel, Todd J. Sheldon, Karen J. Kleckner
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Patent number: 7599740Abstract: Pacing parameters are provided to address cross talk and intrinsic ventricular events occurring within a predefined blanking period following an atrial event. The parameters are used in conjunction with protocol for minimizing or reducing ventricular pacing, wherein ignoring intrinsic ventricular events during the blanking period might otherwise affect the performance of the protocol.Type: GrantFiled: May 15, 2007Date of Patent: October 6, 2009Assignee: Medtronic, Inc.Inventors: Robert A. Betzold, David A. Casavant, Paul A. Belk, Thomas J. Mullen, John C. Stroebel, Steven R. Hornberger, Todd J. Sheldon, Douglas A. Peterson
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Patent number: 7587242Abstract: A preferred atrial-based pacing method and apparatus is provided using an intelligent cardiac pacing system to having the ability to continue atrial-based pacing as long as relatively reliable AV conduction is present. In the event that such relatively reliable AV conduction is not present, mode switching to a DDD/R or a DDI/R pacing mode while continually biased to mode switch back to atrial-based pacing. The standard or relatively reliable AV conduction may be changed either automatically or manually. This increases pacing that utilizes natural AV conduction however possible so as to gain all the benefits of cardiac contractile properties resulting therefrom, while tolerating the occasional missed ventricular depolarization (i.e., non-conducted P-wave). In the event where relatively reliable AV conduction is not present, the pacing mode is switched to a DDD/R mode while detecting a return of the relatively reliable AV conduction (and resulting mode switch to preferred atrial based pacing).Type: GrantFiled: June 29, 2006Date of Patent: September 8, 2009Assignee: Medtronic, Inc.Inventors: David A. Casavant, Paul A. Belk, Thomas J. Mullen, John C. Stroebel
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Publication number: 20090204168Abstract: A bus system is provided for implantable medical devices. The bus system provides for flexible and reliable communication between subsystems in an implantable medical device. The bus system facilitates a wide variety of communications between various subsystems. These various subsystems can include one or more sensing devices, processors, data storage devices, patient alert devices, power management devices, signal processing and other devices implemented to perform a variety of different functions.Type: ApplicationFiled: February 6, 2009Publication date: August 13, 2009Applicant: Medtronic, Inc.Inventors: Todd A. Kallmyer, Kevin K. Walsh, Javaid Masoud, Xander Evers, John C. Stroebel, James H. Ericksen, Mark A. Stockburger, Paul J. Huelskamp