05709215 is referenced by 102 patents and cites 5 patents.

An ICD detection method for sensing the occurrence of an R-wave improves the ability to distinguish R-waves from noise through the use of variable declining sensitivity thresholds. The method includes the consideration of the amplitude of at least the previous most recent R-wave to determine a declining threshold of sensitivity used to recognize a subsequent electrical signal as an R-wave. In the method, the amplitude of the previous R-wave may be classified, based upon amplitude, and based upon the classification, a desirable time constant for the declining threshold of sensitivity is provided as an exponential or reverse exponential decay. Alternatively, a piece wise use of various decay formulas may be combined and used to avoid false recognition of noise as an R-wave.

Title
R-wave detection method for implantable cardioverter defibrillators
Application Number
8/524391
Publication Number
5709215
Application Date
September 6, 1995
Publication Date
January 20, 1998
Inventor
Theodore P Adams
Edina
MN, US
James E Brewer
Maplewood
MN, US
Dennis A Brumwell
Bloomington
MN, US
Joseph S Perttu
Chanhassen
MN, US
Agent
Brad Pedersen
Assignee
Angeion Corporation
MN, US
IPC
A61B 5/0456
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