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. 16, 2003
Filed:
May. 10, 2001
Applicant:
Inventors:
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61N 1/08 ;
U.S. Cl.
CPC ...
A61N 1/08 ;
Abstract
An apparatus for testing the impedance of a medical lead connecting an implantable stimulation device to a nerve or a muscle. The implantable device is of the type comprising a capacitor for stimulating the nerve or the muscle. The system of the invention comprises a current generator for generating a testing current “I” during a calibrated testing pulse and a power circuit coupled to the capacitor and to the current generator for determining if the capacitor is charged by the testing current during the calibrated testing pulse.