Extendable spinal implant and extension tool

US7056343B2 · kind B2 · utility

Assignee

• Bernd Schafer · CH

Inventors

• Bernd Schafer · Kipfenberg, DE
• Thilo Trautwein · Echterdingen, DE

Key dates

• Filing date: Jan 30, 2003
• Grant date: Jun 6, 2006
• Expiry date: Jan 30, 2023

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61F2220/0025
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

An extendable spinal implant has a first outer sleeve and a second outer sleeve coaxially disposed thereto. An inside drive element is connected by means of screws to at least one of the outer sleeves. The inside drive element has an outside thread, and the outer sleeve that is connected to the drive element has an inside thread that fits on the outside thread. The inside drive element rests on a supporting ring, and is rotatably driven with respect to the supporting ring.