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Machine translation
1. (WO1980001620) HERMETIC ELECTRICAL FEEDTHROUGH ASSEMBLY
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1980/001620    International Application No.:    PCT/US1980/000126
Publication Date: 07.08.1980 International Filing Date: 28.01.1980
IPC:
A61N 1/375 (2006.01), C03C 27/04 (2006.01), H01B 17/30 (2006.01), H01M 2/06 (2006.01)
Applicants:
Inventors:
Priority Data:
7153 29.01.1979 US
Title (EN) HERMETIC ELECTRICAL FEEDTHROUGH ASSEMBLY
(FR) ENSEMBLE D"ALIMENTATION ELECTRIQUE HERMETIQUE
Abstract: front page image
(EN)A hermetic feedthrough assembly consists of a niobium pin (10) surrounded by a sapphire insulator (12) which is carried by a niobium ferrule (14). The hermetic seal between the insulator, the ferrule and the pin is often subject to delamination as a result of cracking induced by stresses associated with the fabrication and testing procedures. Hermeticity can be maintained by brazing the assembly together with a braze (16) of gold or a gold-vanadium-yettrium alloy. The sapphire insulator must be metallized when the gold braze is used, the metallization consisting of a coating (19) of niobium, titanium or alloys thereof and an overlayer (18) of gold. Such hermetic feedthrough assemblies are adapted for use in encapsulated electrical devices, such as electrochemical cells and heart pacemakers implanted within the human body.
(FR)Un ensemble d"alimentation electrique hermetique consiste en un axe en niobium (10) entoure d"un isolateur en saphir (12) qui est porte par un embout en niobium (14). Le joint hermetique entre l"isolateur, l"embout et l"axe est souvent soumis a un delaminage resultant des fissurations induites par les contraintes associees aux procedes de fabrication et d"essai. Les proprietes hermetiques peuvent etre maintenues en brasant l"ensemble avec une brasure (16) d"or ou d"un alliage or-vanadium-yttrium. L"isolateur en saphir doit etre metallise lorsque la brasure en or est utilisee, la metallisation consistant en un revetement (19) de niobium, titane ou leurs alliages et en une couche de recouvrement (18) en or. De tels ensembles d"alimentation electrique hermetiques se pretent a une utilisation dans des dispositifs electriques encapsules, tels que des cellules electrochimiques et des stimulateurs cardiaques implantes dans le corps humain.
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)