Patents by Inventor Michael F. Hess

Michael F. Hess 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: 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
  • 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
  • Publication number: 20190298903
    Abstract: Systems and methods are described herein for evaluation and adjustment of a left ventricular assist device (LVAD). The systems and methods may utilize at least a plurality of external electrodes to monitor cardiac electrical activity before and during LVAD therapy. The cardiac electrical activity as well as other information such cardiac sound information may be used to determine and adjust one or more LVAD output parameters such as pump speed.
    Type: Application
    Filed: March 29, 2019
    Publication date: October 3, 2019
    Inventors: Jeffrey M. Gillberg, Subham Ghosh, Michael F. Hess, Troy E. Jackson
  • Patent number: 10286214
    Abstract: An intracardiac ventricular pacemaker having a motion sensor is configured to produce a motion signal including an atrial systolic event and at least one ventricular diastolic event. The pacemaker is configured to set an atrial refractory period, detect a change in a ventricular diastolic event metric and adjust the atrial refractory period in response to detecting the change. The pacemaker sets set an atrioventricular pacing interval in response to detecting the atrial systolic event from the motion signal after expiration of the atrial refractory period.
    Type: Grant
    Filed: November 3, 2016
    Date of Patent: May 14, 2019
    Assignee: Medtronic, Inc.
    Inventors: Wade M Demmer, Yong K Cho, Mark K Erickson, Michael F Hess, Todd J Sheldon, Vincent E Splett
  • Publication number: 20190111271
    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: October 13, 2017
    Publication date: April 18, 2019
    Inventors: Wade M. Demmer, Yong K. Cho, Michael F. Hess, Todd J. Sheldon
  • Patent number: 9981135
    Abstract: A medical device system including at least a first implantable medical device and a second implantable medical device is configured to establish by a control module of the first implantable medical device whether the second implantable medical device is present in a patient and self-configure an operating mode of the control module in response to establishing that the second implantable medical device is present.
    Type: Grant
    Filed: March 11, 2015
    Date of Patent: May 29, 2018
    Assignee: Medtronic, Inc.
    Inventors: Yong K Cho, Wade M Demmer, Michael D Eggen, Kathryn Hilpisch, Michael F Hess, Todd J Sheldon, Saul E Greenhut
  • Publication number: 20180117337
    Abstract: An intracardiac ventricular pacemaker having a motion sensor is configured to produce a motion signal including an atrial systolic event and at least one ventricular diastolic event. The pacemaker is configured to set an atrial refractory period, detect a change in a ventricular diastolic event metric and adjust the atrial refractory period in response to detecting the change. The pacemaker sets set an atrioventricular pacing interval in response to detecting the atrial systolic event from the motion signal after expiration of the atrial refractory period.
    Type: Application
    Filed: November 3, 2016
    Publication date: May 3, 2018
    Inventors: Wade M Demmer, Yong K Cho, Mark K Erickson, Michael F Hess, Todd J Sheldon, Vincent E Splett
  • Publication number: 20170105635
    Abstract: An implantable medical device includes a housing having a proximal end and a distal end, a control module enclosed by the housing, and a pressure sensor electrically coupled to the control module. A fixation member is coupled to the housing distal end for anchoring the housing distal end at a fixation site within a cardiovascular system of a patient, and the pressure sensor is spaced apart proximally from the fixation member.
    Type: Application
    Filed: November 6, 2015
    Publication date: April 20, 2017
    Inventors: Yong K. Cho, Michael F. Hess, Leonardo Rapallini, Todd J. Sheldon, Brian D. Urke
  • Patent number: 9345889
    Abstract: A medical device is provided that includes an input/output, at least one sensor, a memory, a controller and at least one delivery member. The input/output is configured to provide a communication path to and from the medical device. The at least one sensor is used to monitor at least one patient function. The memory is used to store patient specific data from the at least one sensor and operating parameters of the medical device. The controller is used to control operations of the medical device. The controller is in communication with the at least one sensor, the memory and the input/output. The controller is configured to deny device operational change requests received via the input/output based at least in part on the patient specific data sensed by the at least one sensor. The at least one delivery member is under the control of the controller and is configured to provide a therapeutic function of the medical device.
    Type: Grant
    Filed: July 25, 2014
    Date of Patent: May 24, 2016
    Assignee: Medtronic, Inc.
    Inventor: Michael F. Hess
  • Publication number: 20160023001
    Abstract: A medical device is provided that includes an input/output, at least one sensor, a memory, a controller and at least one delivery member. The input/output is configured to provide a communication path to and from the medical device. The at least one sensor is used to monitor at least one patient function. The memory is used to store patient specific data from the at least one sensor and operating parameters of the medical device. The controller is used to control operations of the medical device. The controller is in communication with the at least one sensor, the memory and the input/output. The controller is configured to deny device operational change requests received via the input/output based at least in part on the patient specific data sensed by the at least one sensor. The at least one delivery member is under the control of the controller and is configured to provide a therapeutic function of the medical device.
    Type: Application
    Filed: July 25, 2014
    Publication date: January 28, 2016
    Inventor: Michael F. Hess
  • Publication number: 20160015985
    Abstract: A medical device system including at least a first implantable medical device and a second implantable medical device is configured to establish by a control module of the first implantable medical device whether the second implantable medical device is present in a patient and self-configure an operating mode of the control module in response to establishing that the second implantable medical device is present.
    Type: Application
    Filed: March 11, 2015
    Publication date: January 21, 2016
    Inventors: Yong K. Cho, Wade M. Demmer, Michael D. Eggen, Kathryn Hilpisch, Michael F. Hess, Todd J. Sheldon, Saul E. Greenhut
  • Patent number: 8738131
    Abstract: A system and method for monitoring at least one chamber of a heart (e.g., a left ventricular chamber) during delivery of extrasystolic stimulation to determine if the desired extra-systole (i.e., ventricular mechanical capture following refractory period expiration) occurs. The system includes an implantable or external cardiac stimulation device in association with a set of leads such as epicardial, endocardial, and/or coronary sinus leads equipped with motion sensor(s). The device receives and processes acceleration sensor signals to determine a signal characteristic indicative of chamber capture resulting from one or more pacing stimulus delivered closely following expiration of the refractory period.
    Type: Grant
    Filed: March 20, 2007
    Date of Patent: May 27, 2014
    Assignee: Medtronic, Inc.
    Inventors: Edward Chinchoy, Michael F. Hess
  • Patent number: 8634926
    Abstract: A system for accessing implantable medical device (IMD) data is provided including an interrogation appliance to retrieve data from an IMD and transfer the data to a processor. The processor converts the device data to a viewable form that is transferred by the processor to a data destination. The data destination may be an electronic mail address, a secure web site, a facsimile number or the interrogation appliance. The data is presented in a viewable form at the data destination either on a display or by printing. Any number of interrogation appliances may be communicatively coupled to the processor for converting IMD data and providing the IMD data back to a data destination in a viewable form for use by a clinician.
    Type: Grant
    Filed: September 8, 2004
    Date of Patent: January 21, 2014
    Assignee: Medtronic, Inc.
    Inventors: Michael F. Hess, Christopher M. Manrodt
  • Publication number: 20130310703
    Abstract: Advanced thoracic fluid monitoring capabilities using impedance are disclosed. An implantable medical device used for detection of changes in impedance in a patient can have means for measuring impedances of the patient in a supine position and in an upright position. Impedance differences can be generated which correspond to a diurnal delta value showing impedance differences between the supine and upright positions.
    Type: Application
    Filed: May 3, 2013
    Publication date: November 21, 2013
    Applicant: Medtronic, Inc.
    Inventor: Michael F. Hess
  • Patent number: 8442627
    Abstract: An implantable medical device used for thoracic fluid monitoring by detection of changes in impedance in a patient. The device measures impedances of the patient in a supine position and in an upright position. The device determines impedance differences between the supine and upright positions which correspond to a diurnal delta value, which may in turn be employed as a diagnostic parameter.
    Type: Grant
    Filed: December 30, 2005
    Date of Patent: May 14, 2013
    Assignee: Medtronic, Inc.
    Inventor: Michael F. Hess
  • Patent number: 8332030
    Abstract: A device for delivering pacing therapy includes an atrial and ventricular leads, sensing circuitry connected to the leads for detecting depolarizations, and pulse generation circuitry for delivering ventricular pacing pulses based on sensed atrial depolarizations. The device includes control circuitry for controlling the pulse generation circuitry in a first mode in which the pulse generation circuitry delivers atrial synchronized pulses to both the right and left ventricular leads in response to each atrial depolarization sensed. In response to a detected atrial arrhythmia, the control circuitry causes the pulse generation circuitry to deliver atrial synchronized ventricular pacing pulses in response only to selected atrial depolarizations.
    Type: Grant
    Filed: April 27, 2005
    Date of Patent: December 11, 2012
    Assignee: Medtronic, Inc.
    Inventors: Michael F. Hess, Eduardo N. Warman
  • Patent number: 7953482
    Abstract: In some embodiments, a method for operating a cardiac rhythm management device may include one or more of the following steps: (a) sensing atrial depolarizations through an implanted atrial electrode, (b) administering a sequential CRT pacing therapy in a sequential CRT pacing mode to a left and right ventricle of a heart of a patient via implanted ventricular electrodes in a sequential bi-ventricular fashion, (c) switching from the sequential CRT pacing mode to a simultaneous CRT pacing mode, (d) administering a simultaneous CRT pacing therapy in the simultaneous CRT pacing mode to the left and right ventricle in a simultaneous bi-ventricular fashion, (e) analyzing the sensed atrial depolarizations to detect the presence of an atrial arrhythmia, (f) analyzing the sensed atrial depolarizations while in the sequential CRT pacing mode to detect the presence of atrial arrhythmia, and (g) sensing ventricular depolarizations of the left and the right ventricle.
    Type: Grant
    Filed: February 20, 2009
    Date of Patent: May 31, 2011
    Assignee: Medtronic, Inc.
    Inventor: Michael F. Hess
  • Patent number: 7787942
    Abstract: A system and method for monitoring at least one chamber of a heart (e.g., a left ventricular chamber) during delivery of a refractory period stimulation (RPS) therapy to determine if the desired non-capture (i.e., lack of ventricular mechanical capture due to refractory period stimulation) occurs. The system includes an implantable or external cardiac stimulation device in association with a set of leads such as epicardial, endocardial, and/or coronary sinus leads equipped with motion sensor(s). The device receives and processes acceleration sensor signals to determine a signal characteristic indicative of chamber capture due to pacing stimulus delivery, non-capture due to RPS therapy delivery, and/or contractile status based on the qualities of evoked response to pacing stimulation.
    Type: Grant
    Filed: April 30, 2007
    Date of Patent: August 31, 2010
    Assignee: Medtronic, Inc.
    Inventors: Edward Chinchoy, Michael F. Hess
  • Publication number: 20090182390
    Abstract: In some embodiments, a method for operating a cardiac rhythm management device may include one or more of the following steps: (a) sensing atrial depolarizations through an implanted atrial electrode, (b) administering a sequential CRT pacing therapy in a sequential CRT pacing mode to a left and right ventricle of a heart of a patient via implanted ventricular electrodes in a sequential bi-ventricular fashion, (c) switching from the sequential CRT pacing mode to a simultaneous CRT pacing mode, (d) administering a simultaneous CRT pacing therapy in the simultaneous CRT pacing mode to the left and right ventricle in a simultaneous bi-ventricular fashion, (e) analyzing the sensed atrial depolarizations to detect the presence of an atrial arrhythmia, (f) analyzing the sensed atrial depolarizations while in the sequential CRT pacing mode to detect the presence of atrial arrhythmia, and (g) sensing ventricular depolarizations of the left and the right ventricle.
    Type: Application
    Filed: February 20, 2009
    Publication date: July 16, 2009
    Applicant: Medtronic, Inc.
    Inventor: Michael F. Hess
  • Patent number: 7515959
    Abstract: In some embodiments, a method for operating a cardiac rhythm management device may include one or more of the following steps: (a) sensing atrial depolarizations through an implanted atrial electrode, (b) administering a sequential CRT pacing therapy in a sequential CRT pacing mode to a left and right ventricle of a heart of a patient via implanted ventricular electrodes in a sequential bi-ventricular fashion, (c) switching from the sequential CRT pacing mode to a simultaneous CRT pacing mode, (d) administering a simultaneous CRT pacing therapy in the simultaneous CRT pacing mode to the left and right ventricle in a simultaneous bi-ventricular fashion, (e) analyzing the sensed atrial depolarizations to detect the presence of an atrial arrhythmia, (f) analyzing the sensed atrial depolarizations while in the sequential CRT pacing mode to detect the presence of atrial arrhythmia, and (g) sensing ventricular depolarizations of the left and the right ventricle.
    Type: Grant
    Filed: March 31, 2005
    Date of Patent: April 7, 2009
    Assignee: Medtronic, Inc.
    Inventor: Michael F. Hess