Venugopal Allavatam,Stephen J. Hahn,Keith L. Herrmann,Mitchell D. Lanz,Krzysztof Z. Siejko,Benjamin Speakman
申请号：
US15362862
公开号：
US10149627B2
申请日:
2016.11.29
申请国别(地区):
US
年份:
2018
代理人:
摘要：
Methods and/or device facilitating and selecting among multiple modes of filtering a cardiac electrical signal, in which one filtering mode includes additional high pass filtering of low frequency signals, relative to the other filtering mode. The selection filtering modes may include comparing sensed signal amplitude to one or more thresholds, using the multiple modes of filtering. In another example, an additional high pass filter is enabled, over and above a default or baseline filtering mode, and the detected cardiac signal is monitored for indications of possible undersensing, and/or for drops in amplitude toward a threshold, and the additional high pass filter may be disabled upon finding of possible undersensing or drop in signal amplitude.
