Arrhythmia detection based on active muscle noise detection

摘要

Implantable electromedical device or loop recorders or ILRs that solve the problem of very low arrhythmia detection specificities in, i.e., high number of false positives, based on detection and analysis of external noise, specifically muscle noise surrounding the electromedical device. Embodiments generally employ active detection of lead or device movement that induces signal artifacts indicative of external noise. One or more embodiments may detect lead or device movement through use of a piezoelectric transducer, for example located proximally to the device or in the lead of the electromedical.

主权项

1. A electromedical implant configured to improve arrhythmia detections based on active muscle noise detection, comprising:
a device body comprising
a signal analysis element coupled with said device body electrode;a memory coupled with said signal analysis element; an flexible lead body comprising
a proximal end;a distal end;at least one electrode situated proximally to said distal end of said flexible lead body wherein said at least one electrode is coupled with said signal analysis element;a piezoelectric transducer coupled with said signal analysis element; said signal analysis element comprising
at least one detection element configured to detect peak markers or signal features from said at least one electrode and said piezoelectric transducer;wherein said signal analysis element is configured to
determine if a potential arrhythmia condition exists based on said peak markers or said signal features;analyze coherency of said peak markers or said signal features from said at least one electrode and said piezoelectric transducer or between a first potential arrhythmia condition associated with said at least one electrode and a second potential arrhythmia condition associated with said piezoelectric transducer;
wherein said analyze coherency comprises comparison of said first potential arrhythmia condition with said second potential arrhythmia condition to determine if both said first and said second potential arrhythmia conditions exist concurrently with respect to said at least one electrode and said piezoelectric transducer, and,indicate an arrhythmia detection if said coherency is below a predefined threshold and indicate a false arrhythmia detection if said coherency is above said predefined threshold.