公开(公告)号：US20220200448A1

公开(公告)日：2022-06-23

申请号：US17644735

申请日：2021-12-16

申请人： Medtronic, Inc.

发明人： Michael W. Heinks ,  Michael B. Terry ,  Emily Carroll

IPC分类号： H02M3/07 ,  A61N1/365

摘要： An example device includes a memory configured to store representations of sensed signals. The example device includes processing circuitry coupled to the memory, the processing circuitry being configured to read or write the representations of the sensed signals in the memory. The example device includes sensing circuitry coupled to the processing circuitry, the sensing circuitry being configured to sense signals indicative of a physiological condition of a patient via a plurality of electrodes and to output to the processor circuitry the representations of the sensed signals. The sensing circuitry includes a switched capacitor charge pump configured to amplify the sensed signals to generate amplified signals.

公开(公告)号：US09643024B2

公开(公告)日：2017-05-09

申请号：US15060667

申请日：2016-03-04

申请人： Medtronic, Inc.

发明人： James D. Reinke ,  Glenn M. Roline ,  Shohan T. Hossain ,  Michael W. Heinks

IPC分类号： A61N1/00 ,  A61N1/39 ,  A61N1/37 ,  A61N1/375 ,  A61N1/362

CPC分类号： A61N1/3962 ,  A61N1/3621 ,  A61N1/3624 ,  A61N1/37 ,  A61N1/3756 ,  A61N1/3937

摘要： An implantable pacemaker detects delivery of an anti-tachyarrhythmia shock by another device. The implantable pacemaker delivers cardiac stimulation therapy within a patient. The implantable pacemaker senses, via the electrode pair, an electrical signal. The implantable pacemaker detects the anti-tachyarrhythmia shock based on the sensed electrical signal by detecting DC voltage polarization across the electrode pair within the patient. The implantable pacemaker alters the cardiac stimulation therapy based on the detected anti-tachyarrhythmia shock.

公开(公告)号：US11786739B2

公开(公告)日：2023-10-17

申请号：US16995965

申请日：2020-08-18

申请人： Medtronic, Inc.

发明人： Maureen E. Lybarger ,  Jian Cao ,  Wade M. Demmer ,  Michael W. Heinks ,  Jean E. Hudson ,  Michael Kemmerer ,  James J. St. Martin ,  Todd J. Sheldon

IPC分类号： A61N1/36 ,  A61N1/362 ,  A61N1/365 ,  A61B5/352

CPC分类号： A61N1/3624 ,  A61B5/352 ,  A61N1/365

摘要： 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.

公开(公告)号：US11547864B2

公开(公告)日：2023-01-10

申请号：US17068011

申请日：2020-10-12

申请人： Medtronic, Inc.

发明人： Jian Cao ,  Gerald P. Arne ,  Timothy A. Ebeling ,  Yanina Grinberg ,  Michael W. Heinks ,  Paul R. Solheim ,  Xusheng Zhang

IPC分类号： A61N1/39 ,  A61N1/362 ,  A61N1/365 ,  A61N1/372 ,  A61N1/05 ,  A61B5/352

摘要： An implantable medical device system is configured to sense cardiac events in response to a cardiac electrical signal crossing a cardiac event sensing threshold. A control circuit is configured to determine a drop time interval based on a heart rate and control a sensing circuit to hold the cardiac event sensing threshold at a threshold value during the drop time interval.

公开(公告)号：US11524169B2

公开(公告)日：2022-12-13

申请号：US15425169

申请日：2017-02-06

申请人： Medtronic, Inc.

发明人： Yanina Grinberg ,  Paul D. Baker ,  Lonny V. Cabelka ,  Craig W. Dorma ,  Timothy A. Ebeling ,  Michael W. Heinks ,  James Vander Heyden ,  Joseph Ippolito ,  Joel R. Lauer ,  Robert W. Sawchuk ,  Brian W. Schousek

IPC分类号： A61N1/39 ,  A61N1/05 ,  A61N1/365

摘要： An extra-cardiovascular implantable cardioverter defibrillator (ICD) having a high voltage therapy module is configured to control a high voltage charging circuit to charge a capacitor to a pacing voltage amplitude to deliver charge balanced pacing pulses. The capacitor is chargeable to a shock voltage amplitude that is greater than the pacing voltage amplitude. The ICD is configured to enable switching circuitry of the high voltage therapy module to discharge the capacitor to deliver a first pulse having a first polarity and a leading voltage amplitude corresponding to the pacing voltage amplitude for pacing the patient's heart via a pacing electrode vector selected from extra-cardiovascular electrodes. The high voltage therapy module delivers a second pulse after the first pulse. The second pulse has a second polarity opposite the first polarity and balances the electrical charge delivered during the first pulse.

公开(公告)号：US10799710B2

公开(公告)日：2020-10-13

申请号：US15790255

申请日：2017-10-23

申请人： Medtronic, Inc.

发明人： Jian Cao ,  Gerald P. Arne ,  Timothy A. Ebeling ,  Yanina Grinberg ,  Michael W. Heinks ,  Paul R. Solheim ,  Xusheng Zhang

IPC分类号： A61N1/39 ,  A61N1/362 ,  A61N1/365 ,  A61N1/372 ,  A61B5/0456 ,  A61N1/05

摘要： An implantable medical device system is configured to sense cardiac events in response to a cardiac electrical signal crossing a cardiac event sensing threshold. A control circuit is configured to determine a drop time interval based on a heart rate and control a sensing circuit to hold the cardiac event sensing threshold at a threshold value during the drop time interval.

公开(公告)号：US10583306B2

公开(公告)日：2020-03-10

申请号：US15416827

申请日：2017-01-26

申请人： Medtronic, Inc.

发明人： Xusheng Zhang ,  Saul E. Greenhut ,  Michael W. Heinks ,  Paul R. Solheim

IPC分类号： A61N1/39 ,  A61N1/362 ,  A61N1/37 ,  A61N1/365 ,  A61N1/08

摘要： An implantable cardioverter defibrillator (ICD) starts a timer set to a time interval in response to a cardiac electrical signal crossing a noise threshold amplitude and resets the timer to the time interval in response to each crossing of the noise threshold amplitude by the cardiac electrical signal that occurs prior to the time interval expiring. A control circuit of the ICD determines a parameter of the behavior of the timer and identifies a sensed cardiac event as an electromagnetic interference (EMI) event based on the parameter. The ICD may detect EMI in response to the EMI event and withhold a tachyarrhythmia detection or therapy in response to EMI detection.

公开(公告)号：US10252071B2

公开(公告)日：2019-04-09

申请号：US15142171

申请日：2016-04-29

申请人： Medtronic, Inc.

发明人： Jian Cao ,  Timothy A. Ebeling ,  Saul E. Greenhut ,  Michael W. Heinks ,  Irving J. Sanchez ,  Paul R. Solheim ,  Xusheng Zhang ,  Gerald P. Arne

IPC分类号： A61N1/39 ,  A61N1/05 ,  A61B5/0456 ,  A61N1/362 ,  A61N1/365

摘要： An implantable medical device system capable of sensing cardiac electrical signals includes a sensing circuit, a therapy delivery circuit and a control circuit. The sensing circuit is configured to receive a cardiac electrical signal and sense a cardiac event in response to the signal crossing a cardiac event sensing threshold. The therapy delivery circuit is configured to deliver an electrical stimulation therapy to a patient's heart via the electrodes coupled to the implantable medical device. The control circuit is configured to control the sensing circuit to set a starting value of the cardiac event sensing threshold and hold the starting value constant for a sense delay interval. The control circuit is further configured to detect an arrhythmia based on cardiac events sensed by the sensing circuit and control the therapy delivery circuit to deliver the electrical stimulation therapy in response to detecting the arrhythmia.

公开(公告)号：US12005263B2

公开(公告)日：2024-06-11

申请号：US18050462

申请日：2022-10-27

申请人： Medtronic, Inc.

发明人： Yanina Grinberg ,  Paul D. Baker ,  Lonny V. Cabelka ,  Craig W. Dorma ,  Timothy A. Ebeling ,  Michael W. Heinks ,  James Vander Heyden ,  Joseph Ippolito ,  Joel R. Lauer ,  Robert T. Sawchuk ,  Brian W. Schousek

IPC分类号： A61N1/39 ,  A61N1/05 ,  A61N1/365

CPC分类号： A61N1/3962 ,  A61N1/05 ,  A61N1/36507 ,  A61N1/3925 ,  A61N1/39622 ,  A61N1/3981 ,  A61N1/3987

摘要： An extra-cardiovascular implantable cardioverter defibrillator (ICD) having a high voltage therapy module is configured to control a high voltage charging circuit to charge a capacitor to a pacing voltage amplitude to deliver charge balanced pacing pulses. The capacitor is chargeable to a shock voltage amplitude that is greater than the pacing voltage amplitude. The ICD is configured to enable switching circuitry of the high voltage therapy module to discharge the capacitor to deliver a first pulse having a first polarity and a leading voltage amplitude corresponding to the pacing voltage amplitude for pacing the patient's heart via a pacing electrode vector selected from extra-cardiovascular electrodes. The high voltage therapy module delivers a second pulse after the first pulse. The second pulse has a second polarity opposite the first polarity and balances the electrical charge delivered during the first pulse.

公开(公告)号：US20230181912A1

公开(公告)日：2023-06-15

申请号：US17989599

申请日：2022-11-17

申请人： MEDTRONIC, INC.

发明人： Jonathan D. Edmonson ,  Michael W. Heinks

IPC分类号： A61N1/37 ,  A61N1/372 ,  A61N1/365

CPC分类号： A61N1/3718 ,  A61N1/37217 ,  A61N1/36542

摘要： Implantable medical devices include a first sensor for detecting a magnetic field that indicates an exposure mode of operation is appropriate. The implantable medical devices include a second sensor for detecting whether an MRI characteristic is present that indicates whether MRI or non-MRI post exposure diagnostics and other actions should be implemented and may also indicate whether the exposure mode should be MRI or non-MRI specific. An MRI post exposure diagnostic may perform pacing capture threshold tests and the post exposure pacing amplitude output may be kept at a higher than normal level. The second sensor may be an overvoltage clamp circuit of a telemetry coil that indicates whether an overvoltage condition on the telemetry coil is occurring to indicate whether an MRI characteristic is present. The second sensor may be a second threshold magnetic sensor, an accelerometer, or a microphone to indicate whether an MRI characteristic is present.