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:
Sep. 23, 2003
Filed:
Jul. 17, 2001
Earl C. Herleikson, Lebanon, ME (US);
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
A multivariate impedance (Z) measurement module, for use in an electrotherapy device, that accurately measures patient impedance. The Z measurement module implements a resistive network model of the patient's body defined by one or more equations each including resistive elements that represent the impedance of a current paths through the patient. The Z measurement module utilizes at least three electrodes placed at predetermined relative locations on the patient's body, and measures the voltage across different electrode pairs while an applying an alternating current through certain electrodes. The applied current and measured voltages are used to solve the patient model equations for the individual resistive elements. Thus, each individual impedance component is separately and accurately determined.
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