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：US09962102B2

公开(公告)日：2018-05-08

申请号：US14695156

申请日：2015-04-24

Applicant: Medtronic, Inc.

Inventor： Shantanu Sarkar ,  Daniel L Hansen ,  Grant A Neitzell

IPC: A61B5/04 ,  A61B5/046 ,  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 a flutter event in response to a cardiac signal that includes sensing the cardiac signal, determining a sensing window in response to the sensed cardiac signal, the sensing window having a first portion and a second portion. A first derivative signal and a second derivative signal are determined in response to the sensed cardiac signal within the first portion and the second portion of the sensing window, and a sum of amplitudes of the second derivative signal within one or both of the first portion and the second portion of the sensing window is determined, and the flutter event is determined in response to the determined sum of amplitudes.

公开(公告)号：US09486155B2

公开(公告)日：2016-11-08

申请号：US14695135

申请日：2015-04-24

Applicant: Medtronic, Inc.

Inventor： Shantanu Sarkar ,  Daniel L Hansen ,  Grant A Neitzell

IPC: A61B5/04 ,  A61B5/046 ,  A61B5/0456 ,  A61B5/00

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 medical device for determining a P-wave of a cardiac signal that includes sensing the cardiac signal, determining a P-wave sensing window in response to the sensed cardiac signal, the P-wave 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, comparing the determined signal characteristics, and determining the P-wave in response to the comparing.

Abstract translation: 一种用于确定包括感测心脏信号的心脏信号的P波的方法和医疗装置，响应于所感测的心脏信号确定P波感测窗口，所述P波感测窗口具有第一部分和第二部分 确定第一部分内部和第二部分内感测到的心脏信号的信号特性，比较确定的信号特性，以及响应于比较确定P波。

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.

公开(公告)号：US09675269B2

公开(公告)日：2017-06-13

申请号：US14695171

申请日：2015-04-24

Applicant: Medtronic, Inc.

Inventor： Shantanu Sarkar ,  Daniel L Hansen ,  Grant A Neitzell

IPC: A61B5/00 ,  A61B5/046 ,  A61B5/04 ,  A61B5/0456 ,  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 noise in response to a cardiac signal that includes sensing the cardiac signal, determining a sensing window in response to the sensed cardiac signal, the sensing window comprising a first portion and a second portion, determining a first derivative signal in response to the sensed cardiac signal within only one of the first portion and the second portion of the sensing window, determining a second derivative signal in response to the sensed cardiac signal within the one of the first portion and the second portion of the sensing window, determining whether an amplitude of the second derivative signal satisfies an amplitude threshold, and determining noise in response to the amplitude of the second derivative signal satisfying the amplitude threshold.