Technique for welding dissimilar metals

Details Technique for welding dissimilar metals Technique for welding dissimilar metals

1995-10-31

1996-11-05

Kamm, William E.

Surgery: light, thermal, and electrical application

Light, thermal, and electrical application

Electrical therapeutic systems

A61N 1375

Patent

active

055711464

ABSTRACT:
For an implantable medical devices, a system is provided for welding electrically conductive ribbon, typically stainless steel, to electrically conductive wire, typically platinum, the melting point of steel being substantially lower than that of platinum. An aperture is formed in the ribbon having an opening smaller than that of the wire. The ribbon is engaged with the wire such that the aperture is generally coextensive with the wire. Thereupon, a pulse laser beam is directed transversely of the ribbon through the aperture and onto the wire to simultaneously melt the wire and the ribbon and to create a homogeneous mix of the molten steel and platinum in the region surrounding the aperture. Thereafter, operation of the laser beam is discontinued to allow solidification and thereby achieve a welded connection between the ribbon and the wire.

REFERENCES:
patent: 4220814 (1980-09-01), Kyle et al.
patent: 4226244 (1980-10-01), Coury et al.
patent: 5067903 (1991-11-01), Szyszkowski
patent: 5103818 (1992-04-01), Maston et al.
patent: 5235742 (1993-08-01), Szyszkowski
patent: 5282841 (1994-02-01), Szyszkowski
patent: 5336246 (1994-08-01), Dantanarayana

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