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:
Apr. 22, 2003
Filed:
Mar. 10, 2000
Kuo-Wei Chang, Waltham, MA (US);
Biophoretic Therapeutic Systems, LLC, Framingham, MA (US);
Abstract
An electrokinetic system for delivering a substance into tissue includes an alternating current source of a predetermined frequency. A first electrode is coupled to a first terminal of the alternating current source and a second electrode is coupled to a second terminal of the alternating current source. A rectifying circuit is coupled between the first electrode and the first terminal of the alternating current source. One of the first and second electrodes is adapted for electrical contact with a substance-delivery site. A current rectified by the rectifying circuit flows in a current path between the first and second electrodes when the one of the first and second electrodes is in electrical contact with the substance-delivery site to effect delivery of the substance into the tissue.