Orthopedic component of low stiffness

US8652212B2 · kind B2 · utility

Assignee

• Zimmer, Inc. · US

Inventors

• Kirt L. Case · Warsaw, US
• Oludele O. Popoola · Novi, US
• Robby Kissling · Warsaw, US
• Brion R. Mimnaugh · North Webster, US
• Archie Newsome · Mentone, US
• Clarence M. Panchison · Warsaw, US
• Dirk Pletcher · Walkerton, US
• Randy Schlemmer · Bremen, US
• Zhibin Fang · Eden Prairie, US
• Juan Vivanco · Madison, US
• Alicia Rufner · Columbia City, US

Key dates

• Filing date: Jan 29, 2009
• Grant date: Feb 18, 2014
• Expiry date: Dec 22, 2029

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61F2310/00131
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

An orthopedic component having multiple layers that are selected to provide an overall modulus that is substantially lower than the modulus of known orthopedic components to more closely approximate the modulus of the bone into which the orthopedic component is implanted. In one exemplary embodiment, the orthopedic component is an acetabular shell. For example, the acetabular shell may include an outer layer configured for securement to the natural acetabulum of a patient and an inner layer configured to receive an acetabular liner. The head of a femoral prosthesis articulates against the acetabular liner to replicate the function of a natural hip joint. Alternatively, the inner layer of the acetabular shell may act as an integral acetabular liner against which the head of the femoral prosthesis articulates.