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. 05, 2000
Filed:
Apr. 30, 1997
Adrianus P Donders, Andover, MN (US);
Terence G Ryan, Palm Coast, FL (US);
Keon J Weijand, Hoensbroek, NL;
Craig Wiklund, Bloomington, MN (US);
Medtronic, Inc., Minneapolis, MN (US);
Abstract
An implantable medical device having a hermetic canister a battery positioned within the hermetic canister; a pulse generator system positioned within the hermetic canister and electrically coupled to the battery; a receiver positioned within the hermetic canister and electrically coupled to the battery and the pulse generator system; a transmitter positioned within the hermetic canister and electrically coupled to the battery and the pulse generator system; and an antenna positioned outside the hermetic canister and coupled to the pulse generator by a feedthrough. The antenna is constructed of a series of planar windings enclosed by an enclosure; each winding is between 1-100 microns wide, wherein each winding is between 1-1000 microns thick and wherein each winding is spaced apart from each of the other windings between 1-100 microns. In the preferred embodiment the antenna has a closely spaced concentric winding of a conductive material, preferably gold, the winding having 30 turns, wherein is conductive material 25 microns wide, 100 microns thick, and each winding is spaced apart from each of the other turns by 20 microns.