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).

  • Patent number: 9931509
    Abstract: 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: Grant
    Filed: March 5, 2012
    Date of Patent: April 3, 2018
    Assignee: Medtronic, Inc.
    Inventor: John C. Stroebel
  • Patent number: 9375579
    Abstract: 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: Grant
    Filed: June 7, 2011
    Date of Patent: June 28, 2016
    Assignee: Medtronic, Inc.
    Inventors: David A. Casavant, Paul Belk, Thomas J. Mullen, John C. Stroebel
  • Patent number: 8755885
    Abstract: 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: Grant
    Filed: April 28, 2005
    Date of Patent: June 17, 2014
    Assignee: Medtronic, Inc.
    Inventors: D. Curtis Deno, Jeffrey D. Wilkinson, John C. Stroebel
  • Patent number: 8744579
    Abstract: 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: Grant
    Filed: February 4, 2010
    Date of Patent: June 3, 2014
    Assignee: Medtronic, Inc.
    Inventors: Purvee P. Parikh, John C. Stroebel, Todd J. Sheldon, Karen J. Kleckner
  • Publication number: 20120165896
    Abstract: 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: Application
    Filed: March 5, 2012
    Publication date: June 28, 2012
    Applicant: Medtronic, Inc.
    Inventor: John C. Stroebel
  • Publication number: 20110301656
    Abstract: 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: Application
    Filed: June 7, 2011
    Publication date: December 8, 2011
    Applicant: Medtronic, Inc.
    Inventors: David A. Casavant, Paul Belk, Thomas J. Mullen, John C. Stroebel
  • Patent number: 8060202
    Abstract: 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: Grant
    Filed: October 6, 2009
    Date of Patent: November 15, 2011
    Assignee: 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
  • Patent number: 7957800
    Abstract: 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: Grant
    Filed: October 17, 2006
    Date of Patent: June 7, 2011
    Assignee: Medtronic, Inc.
    Inventors: David A. Casavant, Paul Belk, Thomas J. Mullen, John C. Stroebel
  • Patent number: 7925345
    Abstract: 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: Grant
    Filed: October 31, 2006
    Date of Patent: April 12, 2011
    Assignee: Medtronic, Inc.
    Inventors: David Casavant, Paul A. Belk, Thomas J. Mullen, John C. Stroebel
  • Patent number: 7913015
    Abstract: 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: Grant
    Filed: February 6, 2009
    Date of Patent: March 22, 2011
    Assignee: Medtronic, Inc.
    Inventors: Todd A. Kallmyer, Kevin K. Walsh, Javaid Masoud, Xander Evers, John C. Stroebel, James Ericksen, Mark A. Stockburger, Paul J. Huelskamp
  • Patent number: 7881793
    Abstract: 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: Grant
    Filed: March 31, 2005
    Date of Patent: February 1, 2011
    Assignee: Medtronic, Inc.
    Inventors: Robert A. Betzold, David A. Casavant, Paul A. Belk, Thomas J. Mullen, John C. Stroebel
  • Patent number: 7738955
    Abstract: 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: Grant
    Filed: April 27, 2005
    Date of Patent: June 15, 2010
    Assignee: Medtronic, Inc.
    Inventors: Michael O. Sweeney, David A. Casavant, Robert A. Betzold, Paul A. Belk, Thomas J. Mullen, John C. Stroebel
  • Publication number: 20100137935
    Abstract: 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: Application
    Filed: February 4, 2010
    Publication date: June 3, 2010
    Applicant: Medtronic, Inc.
    Inventors: Purvee P. Parikh, John C. Stroebel, Todd J. Sheldon, Karen J. Kleckner
  • Publication number: 20100087882
    Abstract: 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: Application
    Filed: October 6, 2009
    Publication date: April 8, 2010
    Applicant: 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
  • Patent number: 7684863
    Abstract: 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: Grant
    Filed: December 20, 2005
    Date of Patent: March 23, 2010
    Assignee: Medtronic, Inc.
    Inventors: Purvee P. Parikh, John C. Stroebel, Todd J. Sheldon, Karen J. Kleckner
  • Patent number: 7599740
    Abstract: 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: Grant
    Filed: May 15, 2007
    Date of Patent: October 6, 2009
    Assignee: 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
  • Patent number: 7587242
    Abstract: 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: Grant
    Filed: June 29, 2006
    Date of Patent: September 8, 2009
    Assignee: Medtronic, Inc.
    Inventors: David A. Casavant, Paul A. Belk, Thomas J. Mullen, John C. Stroebel
  • Publication number: 20090204168
    Abstract: 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: Application
    Filed: February 6, 2009
    Publication date: August 13, 2009
    Applicant: 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
  • Patent number: 7254441
    Abstract: 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: Grant
    Filed: March 31, 2004
    Date of Patent: August 7, 2007
    Assignee: Medtronic, Inc.
    Inventor: John C. Stroebel
  • Patent number: 7245966
    Abstract: 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: Grant
    Filed: May 21, 2004
    Date of Patent: July 17, 2007
    Assignee: 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