Ryan, Maki, Mann & Hohenfeldt
Systems and methods for filtering artifacts from composite signals
 Analog or digital systems and methods filter an artifact from a composite signal, which comprises sample values arranged with respect to time. The systems and methods select sets of WL sample values in time-sequence along the composite signal and arrange the WL sample values of each set into ordered positions following a predetermined permutation. The systems and methods select one of the ordered positions, z, within each permutation. The systems and methods generate a filter output comprising the sample values occupying the ordered position, z, of each permutation in time-sequence with the composite signal. The systems and methods remove artifacts from signals derived from a biological event; for example, electrograms, electrocardiograms, electroencephalograms, electrogastrograms, electromyograms, and respiratory signals. 
EP Technologies, Inc.
A Y H A A A
A61B Y10S H03H A61B A61N A61B
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James G. David K. Dorin
Whayne Swanson Panescu