公开(公告)号：US20250072810A1

公开(公告)日：2025-03-06

申请号：US18730301

申请日：2023-02-14

Applicant: Medtronic, Inc.

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

IPC: A61B5/363 ,  A61B5/00 ,  A61B5/35 ,  A61B5/352

Abstract: A medical device comprises a sensing circuit configured to sense at least one cardiac electrical signal, sense first ventricular event signals from the at least one cardiac electrical signal according to a sensitivity setting set to a first amplitude; and a control circuit in communication with the sensing circuit, the control circuit configured to determine that the at least one cardiac electrical signal meets suspected undersensing criteria, in response to determining that the suspected undersensing criteria are met, perform a morphology analysis of a first cardiac signal segment acquired from a first cardiac electrical signal of the at least one cardiac electrical signal sensed by the sensing circuit over a first predetermined time interval, determine that the first cardiac signal segment is a first tachyarrhythmia segment based on the morphology analysis, and adjust the sensitivity setting from the first amplitude to a second amplitude less than the first amplitude in response to determining that the first cardiac signal segment is a first tachyarrhythmia segment.

公开(公告)号：US20230173279A1

公开(公告)日：2023-06-08

申请号：US18054137

申请日：2022-11-09

Applicant: Medtronic, Inc.

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

IPC: A61N1/362 ,  A61B5/363 ,  A61N1/365

CPC classification number: A61N1/362 ,  A61B5/363 ,  A61N1/36507

Abstract: A medical device is configured to determine tachyarrhythmia evidence in a cardiac signal segment received from a cardiac electrical signal sensed during a pacing escape interval started to schedule a pending cardiac pacing pulse. The medical device may delay the pending cardiac pacing pulse in response to determining the tachyarrhythmia evidence during the pacing escape interval.