Wear-resistant endoprosthetic devices

US7601174B2 · kind B2 · utility

Assignee

• Warsaw Orthopedic, Inc.

Inventors

• Aaron Kelly · Snoqualmie, US
• Leonard Tokish · Issaquah, US
• Jeff Edfast · Duvall, US
• David Yager · Carnation, US
• Alex Kunzler · Issaquah, US
• Vincent Bryan · Quincy, US
• Randy Allard · Golden, US
• Jeff Rouleau · Redmond, US
• Robert Conta · Mercer Island, US
• Carlos Eduardo Gil · Memphis, US

Key dates

• Filing date: Jun 20, 2003
• Grant date: Oct 13, 2009
• Expiry date: Oct 22, 2024

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61F2310/00796
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

An implantable endoprosthesis is adapted to articulate with one or more prosthesis surfaces, and is at least partially formed from a material having high wear resistance, which may be a polymeric material such as ultra-high molecular weight polyethylene (UHMWPE), polyetherether ketone (PEEK), and the like, or a metallic material, such as a cobalt-chrome alloy, or a ceramic material, such as alumina or zirconia. The body member of the endoprosthesis may be formed from a composite material, and includes at least a first component formed from a first material having increased wear resistance as compared to that of a second material forming a second component of the body member. The second material is generally more resilient as compared to the first material.