公开(公告)号：US20200038665A1

公开(公告)日：2020-02-06

申请号：US16600751

申请日：2019-10-14

Applicant: Medtronic, Inc.

Inventor： 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

IPC: A61N1/37 ,  A61N1/368 ,  A61N1/39

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.

公开(公告)号：US20190262604A1

公开(公告)日：2019-08-29

申请号：US16410117

申请日：2019-05-13

Applicant: Medtronic, Inc.

Inventor： Hyun J. YOON ,  Michael L. ELLINGSON ,  Wade M. DEMMER ,  Jonathan D. EDMONSON ,  Matthew J. HOFFMAN ,  Ben W. HERBERG ,  James D. REINKE ,  Todd J. SHELDON ,  Paul R. SOLHEIM ,  Alison M. SEACORD

IPC: A61N1/08 ,  A61N1/37 ,  A61N1/39

Abstract: Implantable medical devices automatically switch from a normal mode of operation to an exposure mode of operation and back to the normal mode of operation. The implantable medical devices may utilize hysteresis timers in order to determine if entry and/or exit criteria for the exposure mode are met. The implantable medical devices may utilize additional considerations for entry to the exposure mode such as a confirmation counter or a moving buffer of sensor values. The implantable medical devices may utilize additional considerations for exiting the exposure mode of operation and returning to the normal mode, such as total time in the exposure mode, patient position, and high voltage source charge time in the case of devices with defibrillation capabilities.

公开(公告)号：US20190083804A1

公开(公告)日：2019-03-21

申请号：US16195015

申请日：2018-11-19

Applicant: Medtronic, Inc.

Inventor： Yanina GRINBERG ,  Robert T. SAWCHUK ,  Amy E. THOMPSON-NAUMAN ,  Douglas A. PETERSON ,  Paul R. SOLHEIM ,  Joel R. LAUER

IPC: A61N1/39 ,  A61N1/362 ,  A61N1/37 ,  A61N1/372

Abstract: An implantable cardioverter defibrillator (ICD) receives a cardiac electrical signal by a sensing circuit while operating in a sensing without pacing mode and detects asystole based on the cardiac electrical signal. The ICD determines, in response to detecting the asystole, if asystole backup pacing is enabled, and automatically switches to a temporary pacing mode in response to the asystole backup pacing being enabled. Other examples of detecting asystole and providing a response to detecting asystole by the ICD are described herein.

公开(公告)号：US20190054297A1

公开(公告)日：2019-02-21

申请号：US15677204

申请日：2017-08-15

Applicant: Medtronic, Inc.

Inventor： Xusheng ZHANG ,  Yanina GRINBERG ,  Paul R. SOLHEIM ,  Troy E. JACKSON ,  Timothy A. EBELING ,  Vladimir P. NIKOLSKI

IPC: A61N1/362 ,  A61N1/365 ,  A61N1/39 ,  A61N1/372

Abstract: An implantable medical device system is configured to detect a tachyarrhythmia from a cardiac electrical signal and start an ATP therapy delay period. The implantable medical device determines whether the cardiac electrical signal received during the ATP therapy delay period satisfies ATP delivery criteria. A therapy delivery module is controlled to cancel the delayed ATP therapy if the ATP delivery criteria are not met and deliver the delayed ATP therapy if the ATP delivery criteria are met.

公开(公告)号：US20180339164A1

公开(公告)日：2018-11-29

申请号：US16054089

申请日：2018-08-03

Applicant: Medtronic, Inc.

Inventor： Jian CAO ,  Timothy A. EBELING ,  Saul E. GREENHUT ,  Michael W. HEINKS ,  Irving J. SANCHEZ ,  Paul R. SOLHEIM ,  Xusheng ZHANG ,  Gerald P. ARNE

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

Abstract: 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：US20180207437A1

公开(公告)日：2018-07-26

申请号：US15416827

申请日：2017-01-26

Applicant: Medtronic, Inc.

Inventor： Xusheng ZHANG ,  Saul E. GREENHUT ,  Michael W. HEINKS ,  Paul R. SOLHEIM

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

Abstract: 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：US20170354824A1

公开(公告)日：2017-12-14

申请号：US15669091

申请日：2017-08-04

Applicant: Medtronic, Inc.

Inventor： Todd J. SHELDON ,  Wade M. DEMMER ,  Karen J. KLECKNER ,  Douglas A. PETERSON ,  Paul R. SOLHEIM

IPC: A61N1/365 ,  A61N1/36

CPC classification number: A61N1/36542 ,  A61N1/36128 ,  A61N1/36135 ,  A61N1/36585

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.