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. 28, 2014
Filed:
Aug. 01, 2012
Kengo Morioka, Kirishima, JP;
Arne Knudsen, San Diego, CA (US);
Shingo Satou, Kirishima, JP;
Hidekazu Otomaru, Kagoshima, JP;
Andrew Thom, Maple Grove, MN (US);
Hiroshi Makino, San Diego, CA (US);
Markus Reiterer, Plymouth, MN (US);
Gordon Munns, Stacy, MN (US);
Thomas Miltich, Otsego, MN (US);
Joyce Yamamoto, Maple Grove, MN (US);
Takahito Hirata, Kirishima, JP;
Kengo Morioka, Kirishima, JP;
Arne Knudsen, San Diego, CA (US);
Shingo Satou, Kirishima, JP;
Hidekazu Otomaru, Kagoshima, JP;
Andrew Thom, Maple Grove, MN (US);
Hiroshi Makino, San Diego, CA (US);
Markus Reiterer, Plymouth, MN (US);
Gordon Munns, Stacy, MN (US);
Thomas Miltich, Otsego, MN (US);
Joyce Yamamoto, Maple Grove, MN (US);
Takahito Hirata, Kirishima, JP;
Medtronic, Inc., Minneapolis, MN (US);
Kyocera Corporation, Kyoto, JP;
Abstract
A hermetic feedthrough for an implantable medical device includes a sheet having a hole, where the sheet includes a ceramic comprising alumina. The feedthrough also includes a second material substantially filling the hole, where the second material includes a platinum powder mixture and an alumina additive. The platinum powder mixture includes a first platinum powder having a median particle size of between approximately 3 and 10 micrometers and a second platinum powder that is coarser than the first platinum powder and has a median particle size of between approximately 5 and 20 micrometers. The platinum powder mixture includes between approximately 50 and 80 percent by weight of the first platinum powder and between approximately 20 and 50 percent by weight of the second platinum powder. The first and second materials have a co-fired bond therebetween that hermetically seals the hole.