Direct integration of feedthrough to implantable medical device housing using a gold alloy
US9610451B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 12, 2013 |
| Grant date | Apr 4, 2017 |
| Priority date | — |
| Expiry date | Dec 12, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K2103/14
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
One aspect provides a method of attaching a feedthrough to a titanium housing of an implantable medical device. The method includes providing the housing with a flange forming a recess about an opening through the housing, the opening disposed within the recess. A feedthrough is positioned within the recess so as to form a gap between the flange and an insulator of the feedthrough. A braze preform is then positioned within the recess about the insulator, the braze preform comprising a biocompatible braze material having a melting point less than a β-transus temperature of the titanium of the housing. The preform is melted at a temperature less than the β-transus temperature of the titanium of the housing such that the melted braze material fills at least the gap, and then cooled to form a braze joint which bonds the insulator to the housing and hermetically seals the opening.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.