公开(公告)号：WO2023084339A1

公开(公告)日：2023-05-19

申请号：PCT/IB2022/059880

申请日：2022-10-14

Applicant: MEDTRONIC, INC.

Inventor： ARANDA HERNANDEZ, Alfonso ,  EBELING, Timothy A. ,  GREENHUT, Saul E. ,  JACKSON, Troy E. ,  LIU, Yuanzhen ,  SANCHEZ, Irving J. ,  VANDER HEYDEN, James A. ,  ZHANG, Xusheng

IPC: A61N1/365 ,  A61N1/39 ,  A61B5/363

Abstract: A medical device is configured to determine an amplitude metric from a cardiac signal segment sensed over a predetermined time interval and determine if the amplitude metric meets an amplitude threshold. The medical device is configured to perform a first analysis of the cardiac electrical signal segment for detecting a first arrhythmia when the amplitude metric does not meet the amplitude threshold and perform a second analysis of the cardiac electrical signal segment for detecting a second arrhythmia different than the first arrhythmia in response to the amplitude metric meeting the amplitude threshold.

公开(公告)号：WO2021163399A1

公开(公告)日：2021-08-19

申请号：PCT/US2021/017750

申请日：2021-02-12

Applicant: MEDTRONIC, INC.

Inventor： ZHANG, Xusheng ,  GREENHUT, Saul E. ,  LIU, Yuanzhen

IPC: A61N1/39 ,  A61N1/37 ,  A61B5/361 ,  A61B5/00 ,  A61N1/05

Abstract: A medical device is configured to sense an electrical signal and determine that signal to noise criteria are met based on electrical signal segments stored in response to sensed electrophysiological events. The medical device is configured to determine an increased gain signal segment from one of the stored electrical signal segments in response to determining that the signal to noise criteria are met. The medical device determines a noise metric from the increased gain signal segment. The stored electrical signal segment associated with the increased gain signal segment may be classified as a noise segment in response to the noise metric meeting noise detection criteria.

公开(公告)号：WO2021231131A1

公开(公告)日：2021-11-18

申请号：PCT/US2021/030603

申请日：2021-05-04

Applicant: MEDTRONIC, INC.

Inventor： GREENHUT, Saul, E. ,  LIU, Yuanzhen ,  ZHANG, Xusheng

IPC: A61N1/362 ,  A61B5/021 ,  A61N1/365 ,  A61N1/37

Abstract: A medical device is configured to sense event signals from a cardiac electrical signal and determine maximum amplitudes of cardiac electrical signal segments associated with sensed event signals. The medical device is configured to determine at least one tachyarrhythmia metric based on at least a greatest one of the determined maximum amplitudes. The medical device may determine when the at least one tachyarrhythmia metric does not meet true tachyarrhythmia evidence and, in response, determine when the maximum amplitudes meet suspected noise criteria. The medical device may withhold a tachyarrhythmia detection and tachyarrhythmia therapy when suspected noise criteria are met.

公开(公告)号：WO2018200228A1

公开(公告)日：2018-11-01

申请号：PCT/US2018/027708

申请日：2018-04-16

Applicant: MEDTRONIC, INC.

Inventor： ZHANG, Xusheng ,  CAO, Jian ,  LIU, Yuanzhen

IPC: A61N1/08 ,  A61N1/365 ,  A61N1/05 ,  A61N1/362 ,  A61N1/37 ,  A61N1/02

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：WO2023057843A1

公开(公告)日：2023-04-13

申请号：PCT/IB2022/058659

申请日：2022-09-14

Applicant: MEDTRONIC, INC.

Inventor： GREENHUT, Saul E. ,  ARANDA HERNANDEZ, Alfonso ,  EBELING, Timothy A. ,  HEINKS, Michael W. ,  HUDSON, Jean E. ,  JACKSON, Troy E. ,  LIU, Yuanzhen ,  SANCHEZ, Irving J. ,  VANDER HEYDEN, James A. ,  ZHANG, Xusheng

IPC: A61N1/37 ,  A61N1/3706

Abstract: A medical device is configured to receive cardiac electrical signals and sense ventricular event signals from the cardiac electrical signals. The medical device may start a validation window in response to sensing a ventricular event signal and determine if the ventricular event signal is a valid event signal or an invalid event signal based on processing of a different cardiac electrical signal than the cardiac electrical signal from which the ventricular event signal was sensed.

公开(公告)号：WO2022005784A1

公开(公告)日：2022-01-06

申请号：PCT/US2021/038213

申请日：2021-06-21

Applicant: MEDTRONIC, INC.

Inventor： ZHANG, Xusheng ,  LIU, Yuanzhen

IPC: A61N1/39 ,  A61B5/361 ,  A61B5/363 ,  A61N1/362 ,  A61B2560/02 ,  A61B5/341 ,  A61B5/4836 ,  A61B5/7435 ,  A61N1/3621 ,  A61N1/3624 ,  A61N1/3625 ,  A61N1/3702 ,  A61N1/39622 ,  A61N1/3987

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：WO2021118865A1

公开(公告)日：2021-06-17

申请号：PCT/US2020/063188

申请日：2020-12-04

Applicant: MEDTRONIC, INC.

Inventor： MISCHLER, Gavin M. ,  LIU, Yuanzhen ,  GREENHUT, Saul E. ,  ZHANG, Xusheng

IPC: A61N1/39 ,  A61B5/283 ,  A61B5/316 ,  A61B5/349 ,  A61B5/35 ,  A61B5/363 ,  A61B5/00

Abstract: A medical device is configured to detect an alternating pattern of signal features determined from consecutive segments of a cardiac electrical signal and determine a gross morphology metric from at least one segment of the cardiac electrical signal. The device is configured to detect cardiac event oversensing in response to detecting the alternating pattern and the gross morphology metric not meeting tachyarrhythmia morphology criteria. The medical device may withhold detecting an arrhythmia in response to detecting the cardiac event oversensing.

公开(公告)号：WO2021091928A1

公开(公告)日：2021-05-14

申请号：PCT/US2020/058761

申请日：2020-11-04

Applicant: MEDTRONIC, INC.

Inventor： ZHANG, Xusheng ,  DEHMER, Kevin L. ,  GREENHUT, Saul E. ,  JACKSON, Troy E. ,  LIU, Yuanzhen

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

Abstract: A medical device is configured to determine time intervals between consecutive cardiac events sensed from a cardiac electrical signal, increase a value of a tachyarrhythmia interval count in response to each of the determine time intervals detected as a tachyarrhythmia interval. The device is further configured to detect normal sinus rhythm events and the decrease the value of the tachyarrhythmia interval count in response to a threshold number of detected normal sinus rhythm events.