公开(公告)号：US20220088390A1

公开(公告)日：2022-03-24

申请号：US17468058

申请日：2021-09-07

Applicant: Medtronic, Inc.

Inventor： Robert W. Stadler ,  Subham Ghosh ,  Jian Cao ,  Andrea Grammatico ,  Sarah Meloni ,  Xiaohong Zhou

IPC: A61N1/368 ,  A61N1/375 ,  A61B5/353 ,  A61B5/366

Abstract: An implantable medical device system is configured to generate signals representing activity of a heart of a patient; determine, based on the signals, an intrinsic delay of the heart of the patient; determine whether the intrinsic delay is indicative of a first-degree heart block being present in the heart of the patient; determine a patient-specific timing regime for conduction system pacing based on whether the intrinsic delay is indicative of the first-degree heart block being present in the heart of the patient; and administer cardiac pacing to a native conduction system of the heart of the patient based on the timing regime.

公开(公告)号：US11134881B2

公开(公告)日：2021-10-05

申请号：US16531390

申请日：2019-08-05

Applicant: Medtronic, Inc.

Inventor： Jian Cao ,  Mark L. Brown ,  Elise J. Higgins ,  Paul J. DeGroot

IPC: A61B5/363 ,  A61B5/00 ,  A61B5/024 ,  G16H50/30 ,  G16H40/63 ,  G16H40/67 ,  A61B5/316 ,  A61B5/333 ,  A61B5/339 ,  A61B5/352 ,  A61B5/366 ,  A61N1/362 ,  A61N1/365 ,  A61N1/39 ,  A61B5/0245 ,  A61B5/283

Abstract: A system for detecting an atrial tachyarrhythmia episode includes a medical device having sensing circuitry configured to receive a cardiac electrical signal from electrodes coupled to the medical device and a processor configured to detect an atrial tachyarrhythmia episode in response to a time duration of the cardiac electrical signal classified as an atrial tachyarrhythmia being greater than or equal to a first detection threshold. The processor is configured to determine if detection threshold adjustment criteria are met based on at least the detected first atrial tachyarrhythmia episode and adjust the first detection threshold to a second detection threshold different than the first detection threshold in response to the detection threshold adjustment criteria being met.

公开(公告)号：US20210038905A1

公开(公告)日：2021-02-11

申请号：US17068011

申请日：2020-10-12

Applicant: Medtronic, Inc.

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

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

Abstract: 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：US10561332B2

公开(公告)日：2020-02-18

申请号：US15653969

申请日：2017-07-19

Applicant: Medtronic, Inc.

Inventor： Xusheng Zhang ,  Jian Cao ,  Saul E. Greenhut

IPC: A61B5/0464 ,  A61B5/021 ,  A61B5/04 ,  A61B5/00 ,  A61N1/39 ,  A61B5/0452 ,  A61B5/0245 ,  A61N1/37 ,  H03H21/00

Abstract: A medical device system, such as an extra-cardiovascular implantable cardioverter defibrillator ICD, senses R-waves from a first cardiac electrical signal by a first sensing channel and stores a time segment of a second cardiac electrical signal in response to each sensed R-wave. The medical device system determines a morphology parameter correlated to signal noise from time segments of the second cardiac electrical signal, detects a noisy signal segment based on the signal morphology parameter; and withholds detection of a tachyarrhythmia episode in response to detecting a threshold number of noisy signal segments.

公开(公告)号：US10555684B2

公开(公告)日：2020-02-11

申请号：US15496309

申请日：2017-04-25

Applicant: Medtronic, Inc.

Inventor： Xusheng Zhang ,  Jian Cao ,  Yuanzhen Liu

IPC: A61B5/0464 ,  A61B5/0456 ,  A61N1/39 ,  A61B5/04 ,  A61N1/08 ,  A61N1/365 ,  A61N1/05 ,  A61N1/02 ,  A61N1/37

Abstract: An implantable cardioverter defibrillator (ICD) performs a method that includes determining whether first criteria for detecting a ventricular tachyarrhythmia are met by a cardiac electrical signal. The ICD determines features from cardiac signal segment of a group of cardiac signal segments and determines whether a first portion of the features satisfy monomorphic waveform criteria and determines whether a second portion of the features satisfy supraventricular beat criteria. The ICD determines whether second criteria for detecting the ventricular tachyarrhythmia are met and withholds detecting of the ventricular tachyarrhythmia in response to the monomorphic waveform criteria and the supraventricular beat criteria being met.

公开(公告)号：US10368769B2

公开(公告)日：2019-08-06

申请号：US15588810

申请日：2017-05-08

Applicant: Medtronic, Inc.

Inventor： Jian Cao ,  Mark L. Brown ,  Elise J. Higgins ,  Paul J. Degroot

IPC: A61B5/0464 ,  A61B5/00 ,  A61B5/04 ,  A61B5/042 ,  A61B5/0432 ,  A61B5/044 ,  A61N1/362 ,  A61N1/365 ,  A61N1/39 ,  A61B5/024 ,  A61B5/0456 ,  A61B5/0472 ,  A61B5/0245 ,  G16H50/30

Abstract: A system for detecting an atrial tachyarrhythmia episode includes a medical device having sensing circuitry configured to receive a cardiac electrical signal from electrodes coupled to the medical device and a processor configured to detect an atrial tachyarrhythmia episode in response to a time duration of the cardiac electrical signal classified as an atrial tachyarrhythmia being greater than or equal to a first detection threshold. The processor is configured to determine if detection threshold adjustment criteria are met based on at least the detected first atrial tachyarrhythmia episode and adjust the first detection threshold to a second detection threshold different than the first detection threshold in response to the detection threshold adjustment criteria being met.

公开(公告)号：US10004418B2

公开(公告)日：2018-06-26

申请号：US14604411

申请日：2015-01-23

Applicant: Medtronic, Inc.

Inventor： Jian Cao ,  Paul J DeGroot

IPC: A61B5/0456 ,  A61N1/37 ,  A61B5/0452 ,  A61B5/00 ,  A61B5/046 ,  A61N1/368

CPC classification number: A61B5/0456 ,  A61B5/04525 ,  A61B5/046 ,  A61B5/4836 ,  A61B5/686 ,  A61N1/368 ,  A61N1/3702

Abstract: A method and medical device for identifying a cardiac waveform that includes sensing cardiac signals, determining a plurality of RR-intervals in response to the sensed cardiac signals, determining R-waves associated with the plurality of RR-intervals, determining P-waves in response to the determined R-waves, determining parameters associated with each P-wave, determining relative changes of the P-waves in response to the determined parameters, determining whether each of the P-waves match within a match threshold in response to the determined relative changes, and generating a P-wave template in response to each of the P-waves matching within the match threshold.

公开(公告)号：US20180117303A1

公开(公告)日：2018-05-03

申请号：US15860310

申请日：2018-01-02

Applicant: Medtronic, Inc.

Inventor： Mark T. Marshall ,  Jian Cao ,  Melissa G.T. Christie ,  Paul J. DeGroot ,  Vladimir P. Nikolski ,  Amy E. Thompson-Nauman

IPC: A61N1/05 ,  A61N1/39

CPC classification number: A61N1/05 ,  A61N1/0504 ,  A61N1/3918

Abstract: Implantable medical electrical leads having electrodes arranged such that a defibrillation coil electrode and a pace/sense electrode(s) are concurrently positioned substantially over the ventricle when implanted as described. The leads include an elongated lead body having a distal portion and a proximal end, a connector at the proximal end of the lead body, a defibrillation electrode located along the distal portion of the lead body, wherein the defibrillation electrode includes a first electrode segment and a second electrode segment proximal to the first electrode segment by a distance. The leads may include at least one pace/sense electrode, which in some instances, is located between the first defibrillation electrode segment and the second defibrillation electrode segment.

公开(公告)号：US09682244B2

公开(公告)日：2017-06-20

申请号：US14519251

申请日：2014-10-21

Applicant: Medtronic, Inc.

Inventor： Robert W. Stadler ,  Jian Cao

IPC: A61N1/39 ,  A61N1/365 ,  A61N1/362 ,  A61N1/368 ,  A61N1/372

CPC classification number: A61N1/3962 ,  A61N1/3622 ,  A61N1/365 ,  A61N1/368 ,  A61N1/37252

Abstract: A medical device is configured to deliver a shock to a patient's heart via electrodes coupled to the medical device and set an escape interval timer to start running an escape interval after delivering the electrical shock. A sensing module of the medical device is configured to sense a cardiac event in response to a cardiac electrical signal received by the medical device crossing a sensing threshold. The medical device determines if the cardiac event meets reset criteria and allows the escape interval timer to continue running the escape interval if the cardiac event does not meet the reset criteria.

公开(公告)号：US09597525B2

公开(公告)日：2017-03-21

申请号：US14705010

申请日：2015-05-06

Applicant: Medtronic, Inc.

Inventor： Jian Cao ,  Xusheng Zhang ,  Robert W. Stadler

IPC: A61N1/00 ,  A61N1/39 ,  A61B5/0452 ,  A61B5/04

CPC classification number: A61N1/3987 ,  A61B5/04012 ,  A61B5/0452 ,  A61B5/7264 ,  A61N1/3925 ,  A61N1/3956

Abstract: A medical device coupled to extracardiac electrodes is configured to analyze a cardiac electrical signal over a signal analysis segment to determine if shockable rhythm classification criteria are met, determine that TWOS detection criteria are met for the signal analysis segment when a predetermined number of TWOS analysis windows are classified as TWOS, and classify the signal analysis segment as non-shockable in response to determining that the TWOS detection criteria are met.