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:
Feb. 03, 2004
Filed:
Oct. 23, 2001
Richard Lu, Thousand Oaks, CA (US);
Pacesetter, Inc., Sylmar, CA (US);
Abstract
An implantable cardiac stimulation device and method perform reliable, automatic capture verification during bipolar stimulation by eliminating capture verification during a cardiac cycle in which anodal stimulation is detected. Anodal stimulation is detected by the absence of a delay between the bipolar stimulation pulse and an evoked response sensed at the electrode functioning as the anode during stimulation. Automatic capture verification during bipolar stimulation is recommended only if anodal stimulation is not detected at a working stimulation output. During automatic capture verification, if anodal stimulation is detected, a capture threshold test is performed. A change in anodal stimulation threshold indicates a change in capture threshold. Thus, periodic anodal stimulation threshold tests are also performed to predict when a change in capture threshold has occurred. The device avoids adverse effects of anodal stimulation on evoked response detection and provides a method for predicting changes in capture threshold.