The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 27, 2011
Filed:
Nov. 26, 2008
Marina V. Brockway, Shoreview, MN (US);
Vladimir V. Kovtun, Inver Grove heights, MN (US);
Carlos A. Ricci, Apple Valley, MN (US);
Marina V. Brockway, Shoreview, MN (US);
Vladimir V. Kovtun, Inver Grove heights, MN (US);
Carlos A. Ricci, Apple Valley, MN (US);
Data Sciences International Inc., St. Paul, MN (US);
Abstract
In a method for determining a cardiac condition, a sensed physiologic signal for a period of time including multiple cardiac cycles is received. Using the received physiologic data, a heart beat frequency to be used as a reference frequency is determined. A plurality of harmonics of the received physiologic signal is extracted based on the reference frequency, wherein the harmonics correspond to a plurality of alternans frequencies. Amplitudes of at least some of the extracted harmonics are determined, and are used to determine an alternans indicator value.