Extendable and retractable lead

US6463334B1 · kind B1 · utility

Assignee

• Cardiac Pacemakers, Inc. · US

Inventors

• David M. Flynn · Lino Lakes, US
• Michael Brenzel · Windom, US
• Jason Skubitz · Arden Hills, US
• Larry L. Hum · Cottage Grove, US
• Carol Werlein · Ham Lake, US
• Christopher P. Knapp · Oakdale, US
• Gregory R. Ley · Blaine, US
• Jason Alan Shiroff · Edina, US
• Brian Soltis · Windom, US

Key dates

• Filing date: Jul 22, 1999
• Grant date: Oct 8, 2002
• Expiry date: Jul 22, 2019

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S439/909
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A lead having an extendable and retractable fixation mechanism has a rotating terminal pin at the terminal end which rotates the fixation mechanism at the distal end. As the terminal pin is rotated, the fixation mechanism is extended or retracted from the distal end of the lead. A threaded collar allows for the fixation mechanism to smoothly extend and retract from the lead, and allows for a 1:1 turn ratio between the terminal pin and the fixation mechanism. A fluoroscopic ring disposed at the distal end of the lead provides information during the implantation process.