Termination of a shield within an implantable medical lead

US10556105B2 · kind B2 · utility

Assignee

• Medtronic, Inc. · US

Inventors

• Michael J. Kern · St. Louis Park, US
• James M. Olsen · Plymouth, US
• Michael R. Klardie · Bloomington, US
• Richard T. Stone · Minneapolis, US
• Chad Q. Cai · Woodbury, US
• Spencer Fodness-Bondhus · Columbia Heights, US
• Mark J. Conroy · St. Louis Park, US
• Timothy R. Abraham · Lino Lakes, US
• Brian T. Stolz · Bloomington, US

Key dates

• Filing date: May 7, 2018
• Grant date: Feb 11, 2020
• Expiry date: May 7, 2038

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49826
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A shield located within an implantable medical lead may be terminated in various ways. The shield may be terminated by butt, scarf, lap, or other joints between insulation layers surrounding the lead and an insulation extension. For lap joints, a portion of an outer insulation layer may be removed and a replacement outer insulation layer is positioned in place of the removed outer insulation layer, where the replacement layer extends beyond an inner insulation layer and the shield. The replacement layer may also lap onto a portion of the insulation extension. Barbs may be located between the replacement layer and the inner insulation layer or the insulation extension. The shield wires have ends at the termination point that may be folded over individually or may be capped with a ring located within one of the insulation layers of the jacket.