公开(公告)号：US09603543B2

公开(公告)日：2017-03-28

申请号：US14695111

申请日：2015-04-24

Applicant: Medtronic, Inc.

Inventor： Shantanu Sarkar ,  Daniel L Hansen ,  Grant A Neitzell ,  Jerry D Reiland ,  Ryan Wyszynski

IPC: A61B5/046 ,  A61B5/04 ,  A61B5/0456 ,  A61B5/00 ,  A61N1/365 ,  A61N1/39 ,  A61N1/362 ,  A61B5/0452 ,  A61B5/0464

CPC classification number: A61B5/046 ,  A61B5/04 ,  A61B5/04012 ,  A61B5/04014 ,  A61B5/04017 ,  A61B5/0452 ,  A61B5/0456 ,  A61B5/0464 ,  A61B5/686 ,  A61N1/3624 ,  A61N1/36507 ,  A61N1/36592 ,  A61N1/395 ,  A61N1/3987

Abstract: A method and implantable medical device for determining an atrial arrhythmia event that includes sensing a cardiac signal, determining an atrial arrhythmia score for identifying the arrhythmia event in response to the sensed cardiac signal, determining a sensing window in response to the sensed cardiac signal, the sensing window having a first portion and a second portion, determining signal characteristics of the sensed cardiac signal within the first portion and within the second portion, determining whether the sensed cardiac signal within the first portion and within the second portion corresponds to a P-wave in response to the determined signal characteristics, determining whether a signal to noise ratio of the sensed cardiac signal within the first portion and the second portion of the sensing window is satisfied, determining whether to update the arrhythmia score in response to the determined P-wave and the determined signal to noise ratio, and determining whether to delivery an arrhythmia therapy in response to the updated arrhythmia score.

公开(公告)号：US09936890B2

公开(公告)日：2018-04-10

申请号：US14926419

申请日：2015-10-29

Applicant: Medtronic, Inc.

Inventor： Shantanu Sarkar ,  Daniel L Hansen ,  Grant A Neitzell ,  Jerry D Reiland ,  Ryan Wyszynski

IPC: A61N1/39 ,  A61B5/046 ,  A61B5/04 ,  A61B5/0456 ,  A61B5/00 ,  A61N1/365 ,  A61N1/362 ,  A61B5/0452 ,  A61B5/0464

CPC classification number: A61B5/046 ,  A61B5/04 ,  A61B5/04012 ,  A61B5/04014 ,  A61B5/04017 ,  A61B5/0452 ,  A61B5/0456 ,  A61B5/0464 ,  A61B5/686 ,  A61N1/3624 ,  A61N1/36507 ,  A61N1/36592 ,  A61N1/395 ,  A61N1/3987

Abstract: An implantable medical device and method for determining an atrial arrhythmia event that includes a cardiac sensing device comprising a housing having circuitry positioned therein, a plurality of electrodes electrically coupled to the circuitry to sense a cardiac signal, and a processor configured to generate an initial detection of an atrial arrhythmia event in response to an atrial arrhythmia threshold, determine whether a P-wave occurs during the initial detection, determine an adaptive threshold in response to the P-wave being detected, adjust the atrial arrhythmia threshold in response to the adaptive threshold, and generate a subsequent initial detection of an atrial arrhythmia event using the adjusted atrial arrhythmia threshold.