公开(公告)号：US20200146580A1

公开(公告)日：2020-05-14

申请号：US16186937

申请日：2018-11-12

Applicant: Medtronic, Inc.

Inventor： Shantanu SARKAR ,  Wade M. DEMMER ,  Todd J. SHELDON ,  Vincent E. SPLETT

IPC: A61B5/0464 ,  A61N1/362 ,  A61B5/00 ,  A61N1/39 ,  A61B5/046

Abstract: An implantable medical device is configured to determine a first atrial arrhythmia score from ventricular events sensed by a sensing circuit of an implantable medical device and determine a second atrial arrhythmia score from an intraventricular signal comprising atrial mechanical event signals attendant to atrial systole and produced by a sensor of the implantable medical device. An atrial arrhythmia is detected based on the first atrial arrhythmia score and the second atrial arrhythmia score.

公开(公告)号：US20200046983A1

公开(公告)日：2020-02-13

申请号：US16654052

申请日：2019-10-16

Applicant: Medtronic, Inc.

Inventor： Vincent E. SPLETT ,  Todd J. SHELDON ,  Yong K. CHO ,  Wade M. DEMMER ,  Mark K. ERICKSON

IPC: A61N1/365 ,  A61N1/368 ,  A61N1/375 ,  A61N1/372

Abstract: An intracardiac ventricular pacemaker having a motion sensor is configured to produce a motion signal including an atrial systolic event and a ventricular diastolic event indicating a passive ventricular filling phase, set a detection threshold to a first amplitude during an expected time interval of the ventricular diastolic event and to a second amplitude lower than the first amplitude after an expected time interval of the ventricular diastolic event. The pacemaker is configured to detect the atrial systolic event in response to the motion signal crossing the detection threshold and set an atrioventricular pacing interval in response to detecting the atrial systolic event.

公开(公告)号：US20190321634A1

公开(公告)日：2019-10-24

申请号：US16387894

申请日：2019-04-18

Applicant: Medtronic, Inc.

Inventor： Todd J. SHELDON ,  Wade M. DEMMER ,  Vincent P. GANION ,  Juliana E. PRONOVICI ,  Vincent E. SPLETT ,  Menglong XING

IPC: A61N1/362 ,  A61N1/368 ,  A61N1/365

Abstract: A ventricular pacemaker is configured to determine a ventricular rate interval by determining at least one ventricular event interval between two consecutive ventricular events and determine a rate smoothing ventricular pacing interval based on the ventricular rate interval. The pacemaker is further configured to detect an atrial event from a sensor signal and deliver a ventricular pacing pulse in response to detecting the atrial event from the sensor signal. The pacemaker may start the rate smoothing ventricular pacing interval to schedule a next pacing pulse to be delivered upon expiration of the rate smoothing ventricular pacing interval.