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:
Oct. 07, 2014
Filed:
Nov. 25, 2013
Greatbatch Ltd., Clarence, NY (US);
Robert Shawn Johnson, North Tonawanda, NY (US);
Dominick J. Frustaci, Williamsville, NY (US);
Warren S. Dabney, Lake Oswego, OR (US);
Robert A. Stevenson, Canyon Country, CA (US);
Keith W. Seitz, Clarence Center, NY (US);
Christine A. Frysz, Orchard Park, NY (US);
Thomas Marzano, East Amherst, NY (US);
Richard L. Brendel, Carson City, NV (US);
John E. Roberts, Carson City, NV (US);
William Thiebolt, Tonawanda, NY (US);
Christopher M. Williams, Lancaster, NY (US);
Jason Woods, Carson City, NV (US);
Buehl E. Truex, Glendora, CA (US);
Greatbatch Ltd., Clarence, NY (US);
Abstract
An RF filter for an active medical device (AMD), for handling RF power induced in an associated lead from an external RF field at a selected MRI frequency or range frequencies includes a capacitor having a capacitance of between 100 and 10,000 picofarads, and a temperature stable dielectric having a dielectric constant of 200 or less and a temperature coefficient of capacitance (TCC) within the range of plus 400 to minus 7112 parts per million per degree centigrade. The capacitor's dielectric loss tangent in ohms is less than five percent of the capacitor's equivalent series resistance (ESR) at the selected MRI RF frequency or range of frequencies.