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Far-field r-wave detection for timing control of atrial pacing in dual-chamber leadless pacemakers

A pacemaker, implantable leadless technology, applied in applications, sensors, cardiac stimulators, etc., can solve the problems of difficulty in detection and lack of knowledge of the timing of ventricular sensing and pacing.

Active Publication Date: 2021-01-05
MEDTRONIC INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, detecting FFRW from an atrial leadless pacemaker is more difficult than using a standard dual-chamber pacemaker because the timing of true ventricular sensing and pacing is unknown to the atrial leadless pacemaker

Method used

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  • Far-field r-wave detection for timing control of atrial pacing in dual-chamber leadless pacemakers
  • Far-field r-wave detection for timing control of atrial pacing in dual-chamber leadless pacemakers
  • Far-field r-wave detection for timing control of atrial pacing in dual-chamber leadless pacemakers

Examples

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Embodiment Construction

[0028] The implantable atrial pacemaker device of the present disclosure is configured to be implanted in an atrium of a patient's heart. The atrial device can pace the atria, sense intrinsic atrial electrical activity, and detect ventricular activation. The atrial device may control the timing of pacing pulses delivered to the atrium based on the detected ventricular activity.

[0029] The atrial device may include a hermetically sealed housing having a size and form factor that permits implantation of the atrial device within an atrium. In some examples, the housing may have a cylindrical (eg, pill-shaped) form factor. The housing may include fixed tines that connect the housing to cardiac tissue within the atrium. The fixation tines may anchor the atrial device to cardiac tissue of the atria such that the atrial device moves with the cardiac tissue of the atria during systole.

[0030] The housing of the atrial device may house components for sensing electrical activity ...

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Abstract

A method for sensing far-field R-waves in a leadless intracardiac pacemaker implanted in an atrium of a patient's heart may comprise using two electrodes and a first sensing channel of the pacemaker and / or or a second sensing channel to sense an electrical signal generated by the heart; comparing a first timing mark from said first sensing channel with a second timing mark from said second sensing channel; and or if The first timing mark and the second timing mark indicate that the sensing signal is sensed by the first sensing channel and the second sensing channel within a predetermined time threshold apart from each other, then it is determined that the sensed signal is P wave, or if the sensing signal is sensed by the second sensing channel and not sensed by the first sensing channel, then determining that the sensed signal is a far-field R wave.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to U.S. Provisional Application Serial No. 62 / 047,391, filed September 8, 2014, and U.S. Utility Model Application Serial No. 14 / 510,637, filed October 9, 2014, both entitled "Far -Field R-Wave Detection To Control Atrial Pace Timing in a Dual-Chamber Leadless Pacemaker," the contents of both applications are incorporated by reference is incorporated herein in its entirety. technical field [0003] The present disclosure relates to cardiac pacing devices and methods. More specifically, the present disclosure relates to techniques for detecting far-field R-waves using leadless pacemaker devices. Background technique [0004] Leadless pacemakers are used to sense electrical activity and / or deliver therapeutic signals to the heart. For some patients, an atrial pacemaker may be used in one of the atria of the heart. In other patients, multiple leadless pacemakers may be used in at leas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/352A61B5/33A61N1/372A61N1/375A61B5/308
CPCA61B5/4836A61B5/686A61N1/365A61N1/368A61N1/37205A61N1/3756A61N1/371A61N1/3704A61B5/349A61B5/7282A61B5/725A61B5/316A61B5/30
Inventor M·L·布朗S·E·格林哈特T·E·杰克逊
Owner MEDTRONIC INC