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:
Jul. 16, 2013
Filed:
Apr. 21, 2008
Eugenio Cantatore, Eindhoven, NL;
Robert Paul Kleihorst, Eindhoven, NL;
Eugenio Cantatore, Eindhoven, NL;
Robert Paul Kleihorst, Eindhoven, NL;
Koninklijke Philips N.V., Eindhoven, NL;
Abstract
An antenna system for an implantable device like a cardiac pacemaker or a cochlear implant. The antenna system includes at least two coil units coupled with their terminals to a control circuit which can selectively connect the coil units in series or in anti-series, corresponding to a 'operational mode' and a 'safety mode', respectively. In the operational mode, magnetically induced voltages in the coil units add, while they subtract and therefore completely or partially compensate in the safety mode. Thus the implantable device can be protected from damage due to extraordinarily large changing rates of external magnetic fields as they exist for example during MRI examinations.