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. 27, 1983
Filed:
Mar. 06, 1981
Applicant:
Inventors:
Gary A Lattin, Forest Lake, MN (US);
Richard Spevak, Minneapolis, MN (US);
Assignee:
Medtronic, Inc., Minneapolis, MN (US);
Primary Examiner:
Int. Cl.
CPC ...
A61N / ;
U.S. Cl.
CPC ...
604 20 ; 1284 / ; 128802 ;
Abstract
An iontophoretic device in which the polarity of the electrodes is reversible. There is a current source and a pair of electrodes. A polarity control between the current source and the electrodes determines the direction of current flow through and between the electrodes. A timer circuit communicates with the current source and the polarity switching circuit to automatically ramp down the current, switch polarity and then ramp up the current after the polarity has been switched, thereby permitting the iontophoretic process to take place under both electrodes with one application.