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:
Nov. 20, 2012
Filed:
Feb. 26, 2007
Zhong Qun LU, Bothell, WA (US);
Richard C. Nova, Kirkland, WA (US);
Paul S. Tamura, Seattle, WA (US);
Gary A. Debardi, Kirkland, WA (US);
David W. Tecklenburg, Mill Creek, WA (US);
Tyler R. Hart, Seattle, WA (US);
James S. Neumiller, Redmond, WA (US);
Richard J. Cardin, Duvall, WA (US);
Zhong Qun Lu, Bothell, WA (US);
Richard C. Nova, Kirkland, WA (US);
Paul S. Tamura, Seattle, WA (US);
Gary A. DeBardi, Kirkland, WA (US);
David W. Tecklenburg, Mill Creek, WA (US);
Tyler R. Hart, Seattle, WA (US);
James S. Neumiller, Redmond, WA (US);
Richard J. Cardin, Duvall, WA (US);
Physio-Control, Inc., Redmond, WA (US);
Abstract
Techniques for determining whether one or more leads are not adequately connected to a patient, e.g., for ECG monitoring, are described. The techniques involve injection of an integrated signal (which includes a test signal) into one lead, and monitoring the driven lead and the response at the other leads, including the common mode and the difference between the other leads. These 'lead-off' detection techniques may be provided by an external defibrillator that provides three-wire ECG monitoring. Techniques for determining a type of a cable coupled to a defibrillator are also described. The cable-type identification may allow a defibrillator to, for example, operate in either a three-wire ECG monitoring mode or a therapy mode, based on whether a three-wire ECG cable or a defibrillation cable is coupled to the defibrillator.