Prosthetic hip implants

US8088169B2 · kind B2 · utility

Inventors

• Lawrence Dorr · Tustin, US
• Aaron Rosenberg · Deerfield, US
• Wayne Paprosky · Winfield, US

Key dates

• Filing date: May 10, 2010
• Grant date: Jan 3, 2012
• Expiry date: May 10, 2030

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61F2250/0058
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

Prosthetic hip stems and acetabular cups for use in prosthetic hip joints. The hip stem may include a core having a stem portion and a neck portion, a polymer matrix layer substantially covering the stem portion of the core, and a porous metal layer substantially covering the polymer matrix layer. The polymer matrix layer connects the core and the porous metal layer and provides a stiffness for the hip stem which more closely mimics the stiffness of bone than do known hip stems. The hip stems and acetabular cups additionally include a number of improvements adapted for more optimized results with certain types of patient anatomy, such as the anatomy of female patients, for example.