公开(公告)号：US12274888B2

公开(公告)日：2025-04-15

申请号：US18311861

申请日：2023-05-03

Applicant: Medtronic, Inc.

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

IPC: A61B5/0464 ,  A61B5/00 ,  A61B5/283 ,  A61B5/316 ,  A61B5/341 ,  A61B5/349 ,  A61B5/35 ,  A61B5/352 ,  A61B5/363 ,  A61N1/39 ,  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：US20250032803A1

公开(公告)日：2025-01-30

申请号：US18800807

申请日：2024-08-12

Applicant: MEDTRONIC, INC.

Inventor： Nathan A. Grenz ,  Karen J. Kleckner ,  Xusheng Zhang

IPC: A61N1/37 ,  A61B5/00 ,  A61B5/024 ,  A61B7/00 ,  A61B7/04 ,  A61N1/36 ,  A61N1/362 ,  A61N1/365 ,  A61N1/372

Abstract: A method and device for detecting phrenic nerve stimulation (PNS) in, or using, a cardiac medical device. A test signal sensitive to contraction of a diaphragm of a patient may be sensed and signal artifacts of the test signal within each of a first window of the test signal prior to a predetermined cardiac signal and a second window of the test signal subsequent to the predetermined cardiac signal may be determined. The PNS beat criteria may be evaluated, for example, using the test signal, which may be a heart sounds signal.

公开(公告)号：US12011278B2

公开(公告)日：2024-06-18

申请号：US16785916

申请日：2020-02-10

Applicant: Medtronic, Inc.

Inventor： Xusheng Zhang ,  Jian Cao ,  Yuanzhen Liu

IPC: A61B5/363 ,  A61B5/346 ,  A61B5/352 ,  A61N1/08 ,  A61N1/365 ,  A61N1/39 ,  A61N1/02 ,  A61N1/05 ,  A61N1/362 ,  A61N1/37

CPC classification number: A61B5/363 ,  A61B5/346 ,  A61B5/352 ,  A61N1/08 ,  A61N1/36585 ,  A61N1/3925 ,  A61N1/3956 ,  A61N1/3987 ,  A61N1/025 ,  A61N1/0563 ,  A61N1/0587 ,  A61N1/3621 ,  A61N1/3704

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：US11883179B2

公开(公告)日：2024-01-30

申请号：US17001424

申请日：2020-08-24

Applicant: Medtronic, Inc.

Inventor： Robert W. Stadler ,  Xusheng Zhang ,  Vinod Sharma ,  James D. Reinke ,  Barbara J. Schmid

IPC: A61B5/363 ,  A61N1/372 ,  A61N1/375 ,  A61N1/39 ,  A61N1/362 ,  A61B5/346 ,  A61B5/00

CPC classification number: A61B5/363 ,  A61B5/346 ,  A61B5/686 ,  A61N1/3621 ,  A61N1/3756 ,  A61N1/37264 ,  A61N1/37288 ,  A61N1/3962 ,  A61N1/3987 ,  A61N1/39622

Abstract: An implantable medical device comprises a sensing module configured to obtain electrical signals from one or more electrodes and a control module configured to process the electrical signals from the sensing module in accordance with a tachyarrhythmia detection algorithm to monitor for a tachyarrhythmia. The control module detects initiation of a pacing train delivered by a second implantable medical device, determines a type of the detected pacing train, and modifies the tachyarrhythmia detection algorithm based on the type of the detected pacing train.

公开(公告)号：US11801386B2

公开(公告)日：2023-10-31

申请号：US17350153

申请日：2021-06-17

Applicant: Medtronic, Inc.

Inventor： Xusheng Zhang ,  Yuanzhen Liu

IPC: A61N1/37 ,  A61N1/39 ,  A61B5/363 ,  A61B5/341 ,  A61B5/00 ,  A61N1/362

CPC classification number: A61N1/3702 ,  A61B5/341 ,  A61B5/363 ,  A61B5/4836 ,  A61B5/7435 ,  A61N1/3625 ,  A61N1/39622 ,  A61B2560/02

Abstract: A medical device processor is configured to receive a first cardiac electrical signal sensed from a first sensing electrode vector, receive a second cardiac electrical signal sensed from a second sensing electrode vector different than the first sensing electrode vector, and construct a third cardiac electrical signal from the first cardiac electrical signal and the second cardiac electrical signal. In some examples, the system determines sensed cardiac events according to at least one setting of a cardiac event sensing threshold control parameter from at least the third cardiac electrical signal and may determine at least one acceptable setting of a sensing control parameter based on the determined sensed cardiac events. The processor may generate an output representative of the determined sensed cardiac events.

公开(公告)号：US20230285765A1

公开(公告)日：2023-09-14

申请号：US18182795

申请日：2023-03-13

Applicant: Medtronic, Inc.

Inventor： Xusheng Zhang ,  Robert W. Stadler

IPC: A61N1/39

CPC classification number: A61N1/3925

Abstract: A method and medical device for detecting a cardiac event that includes sensing cardiac signals from a plurality of electrodes, the plurality of electrodes forming a first sensing vector and a second sensing vector, identifying the cardiac event as one of a shockable event and a non-shockable event in response to first processing of a first interval sensed along the first sensing vector during a predetermined sensing window and a second interval simultaneously sensed along the second sensing vector, performing second processing of the first interval and the second interval, different from the first processing, in response to the cardiac event being identified as a shockable event, and determining whether to delay identifying the cardiac event being shockable in response to the second processing of the first interval and the second interval.

公开(公告)号：US20230181916A1

公开(公告)日：2023-06-15

申请号：US18061888

申请日：2022-12-05

Applicant: Medtronic, Inc.

Inventor： Xusheng Zhang ,  Becky L. Dolan ,  Richard J. O'Brien ,  Daniel R. Lexcen ,  Vladimir P. Nikolski ,  Michael D. Eggen

IPC: A61N1/39 ,  G16H20/30 ,  A61B5/00 ,  A61B5/364 ,  A61N1/362

CPC classification number: A61N1/3904 ,  A61B5/0006 ,  A61B5/364 ,  A61B5/686 ,  A61B5/746 ,  A61N1/362 ,  A61N1/3975 ,  G16H20/30

Abstract: A medical system includes an implantable cardiac monitoring device (ICMD) configured to monitor one or more physiological signals of a patient and in response to detecting a current or imminent arrhythmia in the patient, transmit first data to an external user device. The external user device is configured to: in response to receiving the first data from the ICMD, outputting a notification of the current or imminent arrythmia; confirm the presence of the current or imminent arrhythmia in the patient; and in response to confirming the current or imminent arrhythmia in the patient, cause an external defibrillator device to deliver a shock to the patient.

公开(公告)号：US11511119B2

公开(公告)日：2022-11-29

申请号：US17156960

申请日：2021-01-25

Applicant: Medtronic, Inc.

Inventor： Melissa G. T. Christie ,  Ronald A. Drake ,  Vladimir P. Nikolski ,  Bushan K. Purushothaman ,  Xusheng Zhang

IPC: A61N1/04 ,  A61N1/05 ,  A61N1/39 ,  A61N1/365 ,  A61N1/38 ,  A61N1/37 ,  A61B5/11 ,  A61B5/00 ,  A61B5/08 ,  A61B5/35 ,  A61B5/341 ,  A61B5/352 ,  A61B5/363 ,  A61N1/362 ,  A61B5/0538 ,  A61B5/361

Abstract: In some examples, a medical device system includes an electrode. The medical device system may include impedance measurement circuitry coupled to the electrode, the impedance measurement circuitry may be configured to generate an impedance signal indicating impedance proximate to the electrode. The medical device system may include processing circuitry that may be configured to identify a first component of the impedance signal. The first component of the impedance signal may be correlated to a cardiac event. The processing circuitry may be configured to determine that the cardiac event occurred based on the identification of the first component of the impedance signal.

公开(公告)号：US11291849B2

公开(公告)日：2022-04-05

申请号：US16391183

申请日：2019-04-22

Applicant: Medtronic, Inc.

Inventor： Robert W. Stadler ,  Raja N. Ghanem ,  Xusheng Zhang

IPC: A61N1/39 ,  A61N1/362 ,  A61B5/00 ,  A61N1/05 ,  A61B5/287 ,  A61B5/341 ,  A61B5/352 ,  A61B5/361 ,  A61B5/363 ,  A61B5/364

Abstract: A method and system for use with an implantable medical device for subcutaneous implant within a patient to determine a likelihood of the patient experiencing a cardiac event that includes sensing a cardiac signal along a plurality of different sensing vectors, determining state information of each vector of the plurality of sensing vectors, determining a cross correlation of the determined state information of each vector of the plurality of sensing vectors, comparing the cross correlation of the determined state information of each vector of the plurality of sensing vectors to a threshold, and detecting the cardiac event in response to the comparing.

公开(公告)号：US10470681B2

公开(公告)日：2019-11-12

申请号：US15606216

申请日：2017-05-26

Applicant: Medtronic, Inc.

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

IPC: A61B5/04 ,  A61B5/024 ,  A61B5/0245 ,  A61B5/0464 ,  A61N1/39 ,  A61B5/042 ,  A61N1/02 ,  A61N1/05 ,  A61N1/365 ,  A61N1/37 ,  A61B5/00 ,  A61B5/0456 ,  A61B5/021 ,  A61N1/36 ,  A61N1/00

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 medical device determines at least one noise parameter from a group of the stored time segments of the second cardiac electrical signal, detects noise based on the noise parameter, and withholds detection of a tachyarrhythmia episode in response to detecting the noise.