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:
Aug. 14, 2012
Filed:
Oct. 23, 2008
Carl D. Wahlstrand, North Oaks, MN (US);
John E. Kast, Hugo, MN (US);
Timothy J. Denison, Minneapolis, MN (US);
John J. Grevious, Minneapolis, MN (US);
Todd A. Kallmyer, Tempe, AZ (US);
Carl D. Wahlstrand, North Oaks, MN (US);
John E. Kast, Hugo, MN (US);
Timothy J. Denison, Minneapolis, MN (US);
John J. Grevious, Minneapolis, MN (US);
Todd A. Kallmyer, Tempe, AZ (US);
Medtronic, Inc., Minneapolis, MN (US);
Abstract
A charging system for an implantable medical device having a secondary coil. The charging system includes an external power source having at least one primary coil, a modulation, circuit operatively coupled to the primary coil and capable of driving it in a manner characterized by a charging parameter, and a sensor in communication with the modulation circuit and capable of sensing a condition indicating a need to adjust the charging parameter during a charging process. The parameter may be varied so that data sensed by the sensor meets a threshold requirement, which may be based on a patient preference, a government regulation, a recommendation promulgated by a health authority and/or a requirement associated with another device carried by the patient. In one embodiment, the regulation dictates maximum magnetic field exposure, and a field limiting circuit is employed to adjust the charging process.