Patents by Inventor Wade M. Demmer

Wade M. Demmer 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).

  • Publication number: 20210052895
    Abstract: A medical device is configured to set a post-atrial time interval in response to an atrial event and generate an event time signal in response to a ventricular electrical signal crossing an R-wave sensing threshold during the post-atrial time interval. The device accumulates oversensing evidence in response to the event time signal and adjusts a ventricular sensing control parameter based on the accumulated oversensing evidence in some examples.
    Type: Application
    Filed: August 18, 2020
    Publication date: February 25, 2021
    Inventors: Maureen E. LYBARGER, Jian CAO, Wade M. DEMMER, Michael W. HEINKS, Jean E. HUDSON, Michael KEMMERER, James J. ST. MARTIN, Todd J. SHELDON
  • Publication number: 20210015389
    Abstract: A medical device system is configured to guide implantation of a pacing electrode for left bundle branch pacing. The system includes a medical device having a processor configured to receive at least one cardiac electrical signal, determine a feature of the cardiac electrical signal, compare the feature to left bundle branch signal criteria, and determine a left bundle branch signal in response to the feature meeting the left bundle branch signal criteria. The system includes a display unit configured to generate a user feedback signal indicating advancement of a pacing electrode into a left portion of a ventricular septum in response to the processor determining the left bundle branch signal.
    Type: Application
    Filed: July 17, 2020
    Publication date: January 21, 2021
    Inventors: Xiaohong ZHOU, Wade M. DEMMER, Robert W. STADLER
  • Publication number: 20210015390
    Abstract: A medical device system is configured to guide implantation of a pacing electrode for left bundle branch pacing. The system includes a medical device having a processor configured to receive at least one cardiac electrical signal, determine a feature of the cardiac electrical signal, compare the feature to left bundle branch signal criteria, and determine a left bundle branch signal in response to the feature meeting the left bundle branch signal criteria. The system includes a display unit configured to generate a user feedback signal indicating advancement of a pacing electrode into a left portion of a ventricular septum in response to the processor determining the left bundle branch signal.
    Type: Application
    Filed: August 11, 2020
    Publication date: January 21, 2021
    Inventors: Xiaohong ZHOU, Wade M. DEMMER, Robert W. STADLER
  • Publication number: 20200406041
    Abstract: A medical device is configured to sense a cardiac electrical signal and determine from the cardiac electrical signal at least one of a maximum peak amplitude of a positive slope of the cardiac electrical signal and a maximum peak time interval from a pacing pulse to the maximum peak amplitude. The device is configured to determine a capture type of the pacing pulse based on at least one or both of the maximum peak amplitude and the maximum peak time interval.
    Type: Application
    Filed: June 15, 2020
    Publication date: December 31, 2020
    Inventors: Jian CAO, Wade M. DEMMER, Maureen E. LYBARGER, Elizabeth A. MATTSON, Todd J. SHELDON, Zhongping YANG, Xiaohong ZHOU
  • Patent number: 10864377
    Abstract: An intracardiac ventricular pacemaker is configured to operate in in a selected one of an atrial-tracking ventricular pacing mode and a non-atrial tracking ventricular pacing mode. A control circuit of the pacemaker determines at least one motion signal metric from the motion signal, compares the at least one motion signal metric to pacing mode switching criteria, and, responsive to the pacing mode switching criteria being satisfied, switches from the selected one of the non-atrial tracking pacing mode and the atrial tracking pacing mode to the other one of the non-atrial tracking pacing mode and the atrial tracking pacing mode for controlling ventricular pacing pulses delivered by the pacemaker.
    Type: Grant
    Filed: June 28, 2018
    Date of Patent: December 15, 2020
    Assignee: Medtronic, Inc.
    Inventors: Todd J. Sheldon, Yong K. Cho, Wade M. Demmer, Mark K. Erickson, Vincent E. Splett
  • Publication number: 20200368535
    Abstract: A pacemaker having a motion sensor delivers atrial-synchronized ventricular pacing by detecting events from a signal produced by the motion sensor and delivering ventricular pacing pulses at a rate that tracks the rate of the detected events. The pacemaker is configured to confirm atrial tracking of the ventricular pacing pulses by determining if detected events from the motion sensor signal are atrial events. The pacemaker is configured to adjust a control parameter used for detecting events from the motion sensor signal if atrial tracking is not confirmed.
    Type: Application
    Filed: August 14, 2020
    Publication date: November 26, 2020
    Inventors: Todd J. SHELDON, Wade M. DEMMER, Greggory R. HERR
  • Publication number: 20200368540
    Abstract: Techniques for minimizing rate of depletion of a non-rechargeable power source, to extend the operational lifetime of an implantable medical device that includes the non-rechargeable power source, by enforcing operational-mode-specific communication protocols whereby inter-device communication between the implantable medical device and another implantable medical device is such that level of power draw from the non-rechargeable power source by the implantable medical device is less than level of power draw from the rechargeable power source by the another implantable medical device for the implantable medical devices to engage in communication with each other.
    Type: Application
    Filed: August 11, 2020
    Publication date: November 26, 2020
    Inventors: Wade M. Demmer, Yong K. Cho, Michael F. Hess, Todd J. Sheldon
  • Publication number: 20200316386
    Abstract: A medical device includes a motion sensor for producing a motion signal including cardiac event signals. The medical device generates a ventricular pacing pulse upon expiration of a pacing interval. The medical device determines a synchrony metric from the motion signal after a delivered ventricular pacing pulse and adjusts the pacing interval based on the synchrony metric.
    Type: Application
    Filed: March 30, 2020
    Publication date: October 8, 2020
    Inventors: Wade M. DEMMER, Alexander R. MATTSON, Todd J. SHELDON, Zhongping YANG
  • Publication number: 20200269055
    Abstract: A medical device and method conserve electrical power used in monitoring cardiac arrhythmias. The device includes a sensing circuit configured to sense a cardiac signal, a power source and a control circuit having a processor powered by the power source. The control circuit is configured to operate in a normal state by waking up the processor to analyze the cardiac electrical signal for determining a state of an arrhythmia. The control circuit switches from the normal state to a power saving state that includes waking up the processor at a lower rate than during the normal state.
    Type: Application
    Filed: February 22, 2019
    Publication date: August 27, 2020
    Inventors: Karen J. KLECKNER, Wade M. DEMMER, Vincent P. GANION, Yanina GRINBERG, Paul R. SOLHEIM
  • Patent number: 10751542
    Abstract: Techniques for minimizing rate of depletion of a non-rechargeable power source, to extend the operational lifetime of an implantable medical device that includes the non-rechargeable power source, by enforcing operational-mode-specific communication protocols whereby inter-device communication between the implantable medical device and another implantable medical device is such that level of power draw from the non-rechargeable power source by the implantable medical device is less than level of power draw from the rechargeable power source by the another implantable medical device for the implantable medical devices to engage in communication with each other.
    Type: Grant
    Filed: October 13, 2017
    Date of Patent: August 25, 2020
    Assignee: Medtronic, Inc.
    Inventors: Wade M. Demmer, Yong K. Cho, Michael F. Hess, Todd J. Sheldon
  • Patent number: 10744329
    Abstract: A pacemaker having a motion sensor delivers atrial-synchronized ventricular pacing by detecting events from a signal produced by the motion sensor and delivering ventricular pacing pulses at a rate that tracks the rate of the detected events. The pacemaker is configured to confirm atrial tracking of the ventricular pacing pulses by determining if detected events from the motion sensor signal are atrial events. The pacemaker is configured to adjust a control parameter used for detecting events from the motion sensor signal if atrial tracking is not confirmed.
    Type: Grant
    Filed: July 5, 2018
    Date of Patent: August 18, 2020
    Assignee: Medtronic, Inc.
    Inventors: Todd J. Sheldon, Wade M. Demmer, Greggory R. Herr
  • Publication number: 20200254262
    Abstract: An implantable medical device is configured determine a numerical value of a variable that is monitored by the implantable medical device and convert the numerical value to a data sequence of modulated electrical stimulation rate intervals. The implantable medical device delivers electrical stimulation pulses according to the data sequence of modulated stimulation rate intervals to cause a modulated rate of activation of excitable tissue of a patient corresponding to the modulated stimulation rate intervals. The modulated rate of activation is detectable by a rate monitor for demodulation to the numerical value of the monitored variable data value. In some examples, the implantable medical device is a pacemaker delivering cardiac pacing pulses according to modulated pacing rate intervals to cause a modulated heart rate of the patient detectable by a heart rate monitor for demodulation to the numerical value of the monitored variable.
    Type: Application
    Filed: February 10, 2020
    Publication date: August 13, 2020
    Inventors: Wade M. DEMMER, Todd J. SHELDON
  • Publication number: 20200238089
    Abstract: Techniques for facilitating telemetry between a medical device and an external device are provided. In one example, a medical device includes a classification component and a communication component. The classification component is configured to determine a classification for data generated by the medical device. The classification component is also configured to determine an urgency level for an advertising data packet based on the classification for the data. The communication component is also configured to broadcast the advertising data packet for the medical device at a defined beaconing rate based on the urgency level for the advertising data packet.
    Type: Application
    Filed: April 10, 2020
    Publication date: July 30, 2020
    Inventors: Wade M. Demmer, Charles R. Gordon, Matthew R. Yoder, Val D. Eisele, Matthew L Hanly, James R Peichel, Nicholas C. Wine, Ryan D. Wyszynski, Eric R. Williams
  • Publication number: 20200146580
    Abstract: An implantable medical device is configured to determine a first atrial arrhythmia score from ventricular events sensed by a sensing circuit of an implantable medical device and determine a second atrial arrhythmia score from an intraventricular signal comprising atrial mechanical event signals attendant to atrial systole and produced by a sensor of the implantable medical device. An atrial arrhythmia is detected based on the first atrial arrhythmia score and the second atrial arrhythmia score.
    Type: Application
    Filed: November 12, 2018
    Publication date: May 14, 2020
    Inventors: Shantanu SARKAR, Wade M. DEMMER, Todd J. SHELDON, Vincent E. SPLETT
  • Publication number: 20200121931
    Abstract: An implantable medical device includes an activity sensor, a pulse generator, and a control module. The control module is configured to determine activity metrics from the activity signal and determine an activity metric value at a predetermined percentile of the activity metrics. The control module sets a lower pacing rate set point based on the activity metric value at the predetermined percentile.
    Type: Application
    Filed: December 18, 2019
    Publication date: April 23, 2020
    Inventors: Todd J. SHELDON, Wade M. DEMMER, Karen J. KLECKNER, Douglas A. PETERSON, Paul R. SOLHEIM
  • Publication number: 20200121932
    Abstract: An intracardiac ventricular pacemaker is configured to detect a ventricular diastolic event from a motion signal received by a pacemaker control circuit from a motion sensor. The control circuit starts an atrial refractory period having an expiration time set based on a time of the detection of the ventricular diastolic event. The control circuit detects an atrial systolic event from the motion signal after expiration of the atrial refractory period and controls a pulse generator of the pacemaker to deliver a pacing pulse to a ventricle of a patient's heart at a first atrioventricular pacing time interval after the atrial systolic event detection.
    Type: Application
    Filed: December 19, 2019
    Publication date: April 23, 2020
    Inventors: Vincent E. SPLETT, Todd J. SHELDON, Yong K. CHO, Wade M. DEMMER, Mark K. ERICKSON
  • Patent number: 10617875
    Abstract: Techniques for facilitating telemetry between a medical device and an external device are provided. In one example, a medical device includes a classification component and a communication component. The classification component is configured to determine a classification for data generated by the medical device. The classification component is also configured to determine an urgency level for an advertising data packet based on the classification for the data. The communication component is also configured to broadcast the advertising data packet for the medical device at a defined beaconing rate based on the urgency level for the advertising data packet.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: April 14, 2020
    Assignee: Medtronic, Inc.
    Inventors: Wade M. Demmer, Charles R. Gordon, Matthew R. Yoder, Val D. Eisele, Matthew P. Hanly, James R. Peichel, Nicholas C. Wine, Ryan D. Wyszynski, Eric R. Williams
  • Publication number: 20200046983
    Abstract: An intracardiac ventricular pacemaker having a motion sensor is configured to produce a motion signal including an atrial systolic event and a ventricular diastolic event indicating a passive ventricular filling phase, set a detection threshold to a first amplitude during an expected time interval of the ventricular diastolic event and to a second amplitude lower than the first amplitude after an expected time interval of the ventricular diastolic event. The pacemaker is configured to detect the atrial systolic event in response to the motion signal crossing the detection threshold and set an atrioventricular pacing interval in response to detecting the atrial systolic event.
    Type: Application
    Filed: October 16, 2019
    Publication date: February 13, 2020
    Inventors: Vincent E. SPLETT, Todd J. SHELDON, Yong K. CHO, Wade M. DEMMER, Mark K. ERICKSON
  • Publication number: 20200038664
    Abstract: The control module of a first pacemaker included in an implantable medical device system including the first pacemaker and a second pacemaker is configured to set a pacing escape interval in response to a far field pacing pulse sensed by the first pacemaker. The far field pacing pulse is a pacing pulse delivered by the second pacemaker. The pacing escape interval is allowed to continue without restarting the in response to a far field intrinsic event sensed by the first pacemaker during the pacing escape interval. The first pacemaker delivers a cardiac pacing pulse to the heart upon expiration of the pacing escape interval.
    Type: Application
    Filed: October 14, 2019
    Publication date: February 6, 2020
    Inventors: Wade M. DEMMER, Todd J. SHELDON, Saul E. GREENHUT, James D. REINKE
  • Publication number: 20200038665
    Abstract: Implantable medical systems enter an exposure mode of operation, either manually via a down linked programming instruction or by automatic detection by the implantable system of exposure to a magnetic disturbance. A controller then determines the appropriate exposure mode by considering various pieces of information including the device type including whether the device has defibrillation capability, pre-exposure mode of therapy including which chambers have been paced, and pre-exposure cardiac activity that is either intrinsic or paced rates. Additional considerations may include determining whether a sensed rate during the exposure mode is physiologic or artificially produced by the magnetic disturbance. When the sensed rate is physiologic, then the controller uses the sensed rate to trigger pacing and otherwise uses asynchronous pacing at a fixed rate.
    Type: Application
    Filed: October 14, 2019
    Publication date: February 6, 2020
    Inventors: Hyun J. YOON, Wade M. DEMMER, Matthew J. HOFFMAN, Robert A. BETZOLD, Jonathan D. EDMONSON, Michael L. ELLINGSON, Mark K. ERICKSON, Ben W. HERBERG, Juliana E. PRONOVICI, James D. REINKE, Todd J. SHELDON, Paul R. SOLHEIM