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:
May. 04, 2004
Filed:
Apr. 22, 2002
John A. Simpson, Carlsbad, CA (US);
Veerichetty A. Kadhiresan, Temecula, CA (US);
David S. Wood, Temecula, CA (US);
Cardiac Pacemakers, Inc., St. Paul, MN (US);
Abstract
A first power output with a first frequency is provided to a first set of electrodes while a second power output with a second frequency, different then the first frequency, is provided to a second set of electrodes. Power outputs are provided to electrodes so adjacent electrodes receive power outputs with different frequencies, thereby establishing a voltage potential between adjacent electrodes and bipolar current flow. The frequencies of the power outputs are selected such that the resultant waveform indicative of the magnitude of the amplitude difference between the outputs has a period short enough to avoid stimulation of excitable muscular and cardiac tissue. Periodic frequency switching between the first and second power output provides uniform current flow between the electrodes over a given period of time. The addition of a backplate establishes unipolar current flow.