公开(公告)号：US20230310840A1

公开(公告)日：2023-10-05

申请号：US18331793

申请日：2023-06-08

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 ,  A61N1/3918 ,  A61N1/0504

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：US11654291B2

公开(公告)日：2023-05-23

申请号：US17105787

申请日：2020-11-27

Applicant: Medtronic, Inc.

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

IPC: A61B5/0464 ,  A61N1/39 ,  A61B5/00 ,  A61B5/35 ,  A61B5/283 ,  A61B5/316 ,  A61B5/341 ,  A61B5/349 ,  A61B5/352 ,  A61B5/363 ,  A61B5/364

CPC classification number: A61N1/3956 ,  A61B5/283 ,  A61B5/316 ,  A61B5/341 ,  A61B5/349 ,  A61B5/35 ,  A61B5/352 ,  A61B5/363 ,  A61B5/4836 ,  A61B5/686 ,  A61B5/7221 ,  A61N1/3925 ,  A61N1/3987 ,  A61B5/364

Abstract: A medical device, 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 acquired by a second sensing channel in response to each sensed R-wave. The ICD determines morphology match scores from the stored time segments of the second cardiac electrical signal and, based on the morphology match scores, withholds detection of a tachyarrhythmia episode. In some examples, the ICD detects T-wave oversensing based on the morphology match scores and withholds detection of a tachyarrhythmia episode in response to detecting the T-wave oversensing.

公开(公告)号：US20220225919A1

公开(公告)日：2022-07-21

申请号：US17152364

申请日：2021-01-19

Applicant: Medtronic, Inc.

Inventor： Jian Cao ,  Mark L. Brown ,  Paul J. DeGroot ,  Adam J. Black ,  Arthur K. Lai

IPC: A61B5/28 ,  A61B5/00 ,  A61B5/259

Abstract: A wearable garment and an arrangement of electrodes configured to measure bioelectrical signals from a patient. The dry electrodes are free from adhesives to hold the electrodes in place on the patient's skin. The arrangement of the electrodes may be configured to limit noise and facilitate accurate signal sensing from the patient even with some amount of relative movement between the electrodes and the patient's skin. The wearable garment may be controllable to change the amount of compression based on the sensed signals from the electrodes, and from other sensors. The garment may maintain a comfortable level of compression until processing circuitry detects a signal of interest, such as a cardiac arrhythmia, irregular respiration, or some other signal. The processing circuitry may cause the wearable garment to increase compression to improve the contact between the electrodes and the patient's skin and improve reception of the measured signals.

公开(公告)号：US20220211401A1

公开(公告)日：2022-07-07

申请号：US17143544

申请日：2021-01-07

Applicant: MEDTRONIC INC.

Inventor： ALAN CHENG ,  Jian Cao ,  Zhongping Yang

IPC: A61B17/22 ,  A61N1/05 ,  A61N7/00

Abstract: A surgical method treats infections on a lead positioned at least partially within a patient's body. The surgical method includes uncoupling the lead from a pulse generator. The lead is then coupled to an ultrasound wave generator. Ultrasound waves are propagated from the ultrasound wave generator through the lead. Systems are disclosed.

公开(公告)号：US20220062645A1

公开(公告)日：2022-03-03

申请号：US17401185

申请日：2021-08-12

Applicant: Medtronic, Inc.

Inventor： Jian Cao ,  Elizabeth A. Mattson ,  Todd J. Sheldon ,  Xiaohong Zhou ,  Wade M. Demmer

IPC: A61N1/37

Abstract: This disclosure is directed to devices and techniques for classifying of pacing captures to evaluate effectiveness of pacing by a pacing device, such as an implantable medical device (IMD). An example system includes stimulation circuitry to generate a pacing stimulus, sensing circuitry to sense an evoked response after the pacing stimulus, and processing circuitry. The processing circuitry determines classification features from the evoked response and applies the classification features to a classification model, the classification model generated by a machine learning algorithm using one or more test sets comprising a plurality of sample evoked responses for each of a plurality of classifications. Based on the output of the model, the processing circuitry classifies the evoke response as one of the plurality of classifications.

公开(公告)号：US11116981B2

公开(公告)日：2021-09-14

申请号：US16217207

申请日：2018-12-12

Applicant: Medtronic, Inc.

Inventor： Xusheng Zhang ,  Jian Cao

IPC: A61N1/36 ,  A61N1/362 ,  A61N1/37 ,  A61B5/352 ,  A61B5/363 ,  A61N1/39 ,  A61N1/365

Abstract: Techniques are described for discriminating SVT and, in particular, rapidly conducting AF. The techniques include detecting an onset of a fast rate of ventricular events sensed from a cardiac electrical signal and detecting a pause in the fast rate of ventricular sensed events. A threshold number of ventricular event intervals required to detect a ventricular tachyarrhythmia is detected with each of the threshold number of ventricular event intervals being less than a tachyarrhythmia detection interval. Detection of the ventricular tachyarrhythmia and an electrical stimulation therapy for treating the ventricular tachyarrhythmia are withheld in response to at least the pause being detected.

公开(公告)号：US10939843B2

公开(公告)日：2021-03-09

申请号：US16291349

申请日：2019-03-04

Applicant: Medtronic, Inc.

Inventor： Jian Cao ,  Elise Higgins

IPC: A61B5/046 ,  A61B5/04 ,  A61N1/39

Abstract: A method and medical device for determining a cardiac episode that includes sensing a cardiac signal, identifying the signal sensed during a predetermined time interval as one of a cardiac event, a non-cardiac event, and an unclassified event, determining a number of identified cardiac events, determining a number of identified unclassified events, and determining whether the cardiac episode is occurring in response to the number of identified cardiac events being greater than a cardiac event count threshold and the number of identified unclassified events being less than an unclassified event count threshold.

公开(公告)号：US10850113B2

公开(公告)日：2020-12-01

申请号：US15655082

申请日：2017-07-20

Applicant: Medtronic, Inc.

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

IPC: A61B5/0464 ,  A61N1/39 ,  A61B5/00 ,  A61B5/0452 ,  A61B5/04 ,  A61B5/042 ,  A61B5/0456 ,  A61B5/0468

Abstract: A medical device, 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 acquired by a second sensing channel in response to each sensed R-wave. The ICD determines morphology match scores from the stored time segments of the second cardiac electrical signal and, based on the morphology match scores, withholds detection of a tachyarrhythmia episode. In some examples, the ICD detects T-wave oversensing based on the morphology match scores and withholds detection of a tachyarrhythmia episode in response to detecting the T-wave oversensing.

公开(公告)号：US10799710B2

公开(公告)日：2020-10-13

申请号：US15790255

申请日：2017-10-23

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 ,  A61B5/0456 ,  A61N1/05

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：US10576288B2

公开(公告)日：2020-03-03

申请号：US15497546

申请日：2017-04-26

Applicant: Medtronic, Inc.

Inventor： Jian Cao ,  Alan Cheng

IPC: A61N1/365 ,  A61B5/04 ,  A61B5/0464 ,  A61N1/39 ,  A61N1/372

Abstract: An implantable medical device performs a method that includes detecting a cardiac event interval that is greater than a P-wave oversensing threshold interval. In response to detecting the cardiac event interval greater than the P-wave oversensing threshold interval, the device determines the amplitude of the sensed cardiac signal and withholds restarting a pacing interval in response to the amplitude satisfying P-wave oversensing criteria. A pacing pulse may be generated in response to the pacing interval expiring without sensing an intrinsic cardiac electrical event that is not detected as a P-wave oversensing event.