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:
Jul. 11, 2017
Filed:
Aug. 23, 2015
The Regents of the University of California, Oakland, CA (US);
Wentai Liu, Los Angeles, CA (US);
Richard Hill, Los Angeles, CA (US);
Yi-Kai Lo, Los Angeles, CA (US);
Kuanfu Chen, Los Angeles, CA (US);
THE REGENTS OF THE UNIVERSITY OF CALIFORNIA, Oakland, CA (US);
Abstract
An apparatus and method for electrical charge balancing when generating a stimulus during functional neural stimulation is presented. A stimulus pulse is generated (cathodic or anodic), and after a selected delay a charge compensating pulse is generated of an opposite polarity. The electrode circuit discontinuously examines electrode voltage after termination of the stimulus pulse, and utilizes this voltage to determine how long to extend the width of the charge compensating pulse. The electrode circuit thus performs accurate electrical charge cancellation to remove residual charges from the electrode by precisely controlling pulse width for an opposing polarity compensating pulse that need not have the same current level as the stimulus pulse.