Surgery – Diagnostic testing – Cardiovascular
Reissue Patent
2005-03-22
2005-03-22
Layno, Carl (Department: 3762)
Surgery
Diagnostic testing
Cardiovascular
C600S515000, C607S009000
Reissue Patent
active
RE038712
ABSTRACT:
A method of storing signals having a course over time in an implantable medical device, and/or transmitting the signals out of the device and out of the patient's body, with the course over time being detected in the device, particularly at predetermined time intervals with a constant sampling interval, and a sequence of signal samples being obtained therefrom, of which a partial quantity is stored and/or transmitted as the result of a selection made with a predetermined selection criterion, with the selection criterion being the first derivation of the course over time of the signals according to time, and with the selection being made such that the first derivation of the straight-line connection between an nth and the (n−1)th signal sample is determined and compared to the first derivation of the straight-line connection between thedelete-start id="DEL-S-00001" date="20050322" ?(n−1)thdelete-end id="DEL-S-00001" ?insert-start id="INS-S-00001" date="20050322" ?nthinsert-end id="INS-S-00001" ?signal sample and the last-stored and/or last-transmitted signal sample, and thedelete-start id="DEL-S-00002" date="20050322" ?nthdelete-end id="DEL-S-00002" ?insert-start id="INS-S-00002" date="20050322" ?(n−1)thinsert-end id="INS-S-00002" ?signal sample is then stored and/or transmitted as the new last signal sample exactly when these first derivations differ by more than a predetermined value.
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S.M. Blanchard et al.: “Comparison of methods for adaptive sampling of cardia electrograms and electrocardiograms”. In: Medical & Biological Engineering & Computing: Jul. 1985; pp. 377-386.
Nigam Indra
Schaldach Max
Wyborny Paul
Biotronik Mess- und Therapiegeraete GmbH & Co.
Layno Carl
Venable LLP
Voorhees Catherine M.
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