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:
Jan. 09, 2001
Filed:
Dec. 11, 1998
Tae H. Joo, Redmond, WA (US);
David R. Hampton, Woodinville, WA (US);
Paul W. Schmitt, Woodinville, WA (US);
Douglas K. Medema, Everett, WA (US);
Robert A. Niskanen, Seattle, WA (US);
Physio-Control Manufacturing Corporation, Redmond, WA (US);
Abstract
A device (,) that detects and reports the presence of an acute cardiac ischemic condition in a patient includes sensing electrodes (,, and,) placed on a patient for acquiring multiple (e.g., twelve) lead ECG data from the patient. The device evaluates the acquired ECG data by analyzing global features derived from the ECG data. Global features include projection coefficients calculated from projecting a concatenated vector of representative heartbeat data onto sets of basis vectors that define an acute cardiac ischemic ECG subspace and a non-ischemic ECG subspace. A classifier evaluates the global features to determine whether an acute cardiac ischemic condition is detected. In a further embodiment of the invention, one or more classifiers evaluate local features, such as local morphological features and patient clinical information, in addition to the global features to determine whether an acute cardiac ischemic condition is detected. The device (,) may be configured with an adjustable sensitivity/specificity operating point. The result of the evaluation is reported to the user of the device.