Ryan, Maki, Mann & Hohenfeldt
Systems and methods for filtering signals derived from biological events
 Systems and methods provide non-linear, non-median filters for signals derived from biological events. The systems and methods select a set of n sample values arranged with respect to time from the derived biological signal input. The systems and methods arrange the n sample values of the set into ordered positions following a predetermined permutation. The systems and methods select one of the ordered positions, z, within the permutation, where z is an odd positive integer greater or equal to one but less than or equal to n. The systems and methods generate a processed output comprising the sample value occupying the ordered position, z, in the permutation. 
EP Technologies, Inc.
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A61B A61N A61B H03H A61B
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Dorin James G.
Panescu Whayne