Surgery: light – thermal – and electrical application – Light – thermal – and electrical application – Electrical therapeutic systems
Patent
1997-09-03
1999-05-11
Kamm, William E.
Surgery: light, thermal, and electrical application
Light, thermal, and electrical application
Electrical therapeutic systems
600333, A61N1/375
Patent
active
059023260
ABSTRACT:
An optical window assembly for use in implantable medical devices includes a generally U-shaped ferrule having a strain relief channel to accommodate residual stresses remaining in the ferrule after welding the ferrule to the housing of an implantable medical device. The assembly may be used to transmit optical energy and/or electrically insulate a feedthrough. The assembly can be mounted in a window opening in a housing. The ferrule can include a ferrule body forming a lens opening, the ferrule body having a generally U-shaped cross-section with an inner leg, an outer leg, and a strain relief channel in the ferrule body between the inner leg and the outer leg. A lens is mounted in the lens opening of the ferrule. The ferrule can also include a lens flange on the inner leg of the ferrule body, a support flange on the outer leg of the ferrule body, and/or a braze stop to control flow of the braze. The ferrule and housing can be constructed of titanium. Also disclosed are methods of manufacturing the optical window assemblies and implantable medical devices including the optical window assemblies.
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Lessar Joseph F.
Miesel Keith A.
Olson John C.
Tettemer Susan A.
Kamm William E.
Layno Carl H.
Medtronic Inc.
Patton Harold R.
Woods Thomas F.
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