Depuy Products, Inc.

Zimmer Gmbh

Richard S King

Mark D Hanes

Todd Smith

Donald E McNulty

Thirumalai N Devanathan

Steve T Lin

Dale Frederick Swarts

William L Rohr, Jr

Luke J Aram

Robert E Richard

Craig N Ernsberger

George L Grobe, Iii

Keith Greer

George L Grobe

Mark Hanes

The invention provides a hydrogel composition comprising water and a hydrophilic polymer, wherein the hydrogel composition has (a) an ultimate tensile strength of about 10 kPa or more, (b) a compressive strength of about 70 kPa or more, or (c) an ultimate tensile strength of about 10 kPa or more and a compressive strength of about 70 kPa or more. The invention further provides methods for producing a hydrogel composition.

Hydrogel composition and methods for making the same

A polymeric implantable orthopaedic device that includes a first layer and a second layer where the first layer has a porosity that is different from the second layer is described. An associated method of producing a polymeric implantable orthopaedic device that includes a first layer and a second layer where the first layer has a porosity that is different from the second layer is also described.

Implantable orthopaedic device and method for making the same

Composites that include a ceramic substance disposed in a polymeric material and associated methods for making the same.

Composite for implantation in the body of an animal and method for making the same

The invention provides a medical implant or medical implant part comprising porous ultrahigh molecular weight polyethylene having a weight average molecular weight of about 400,000 atomic mass units or more and a porosity of about 15% to about 65%. The invention further provides a process for producing a medical implant or medical implant part.

Process for producing medical implant or medical implant part comprising porous UHMWPE

An orthopaedic bearing includes a metallic component having a polymer composite secured thereto. A method of making an orthopaedic bearing is also disclosed.

Orthopaedic bearing and method for making the same

An method of making an orthopaedic bearing includes securing polymer composite to a metallic component. An orthopaedic bearing is also disclosed.

Method of making an implantable orthopaedic bearing

An orthopaedic bearing includes a ceramic component having a polymer composite secured thereto. A method of making an orthopaedic bearing is also disclosed.

An implantable prosthetic bearing is constructed of a composite material having a first layer and second layer. The first layer has an articulating surface defined therein, whereas the second layer has a engaging surface defined therein for engaging either another prosthetic component or the bone itself The first layer of the implantable prosthetic bearing is constructed of crosslinked polymer such as Ultra-High Molecular Weight Polyethylene, whereas the second layer of the implantable prosthetic bearing is constructed of polymer such as Ultra-High Molecular Weight Polyethylene that is either non-crosslinked or crosslinked to a lesser degree than the first layer. In such a manner, the first layer possesses mechanical properties which are advantageous in regard to the articulating surface (e.g., enhanced wear and oxidation resistance), whereas the second layer possesses mechanical properties which are advantageous in regard to the engaging surface (e.g., high ductility, toughness, and creep resistance). A method of making a prosthetic bearing is also disclosed.

Composite prosthetic bearing having a crosslinked articulating surface and method for making the same

The invention provides a medical implant or medical implant part comprising a body and a surface layer, wherein the surface layer comprises a mixture comprising at least one hydrophilic polymer and ultrahigh molecular weight polyethylene having a weight average molecular weight of about 400,000 atomic mass units or more. The invention also provides a method for producing such a medical implant or medical implant.

Method for producing medical implant or medical implant part

Medical implant or medical implant part comprising porous UHMWPE and process for producing the same

Disclosed is a bearing material of a medical implant, which is an ultrahigh molecular weight polyethylene (UHMWPE) composite. The composite comprises, for example, UHMWPE and a polyethylene copolymer having a polymer backbone and pendant hydrophilic groups or pendant surface active agents that are attached to the polymer backbone. Also disclosed are methods for preparing bearing materials. The bearing material has one or more advantageous properties including reduced immune response, reduced wear, and/or increased lubrication.

Bearing material of medical implant and methods for making it

A component made from a crosslinked polymeric material, wherein the crosslinked polymeric material has a reduced crystallinity is described. An associated method for fabricating such a component is also described.

Low crystalline polymeric material for orthopaedic implants and an associated method

The invention provides a polymer composition comprising cross-linked polyethylene having a non-polar biocompatible lipid disposed in at least a portion of the free volume of the polyethylene. The invention further provides methods for making the polymer composition.

Polymer composition comprising cross-linked polyethylene and methods for making the same

The invention provides a process for quenching free radicals present in irradiated ultrahigh molecular weight polyethylene comprising the steps of (a) providing a mass of irradiated ultrahigh molecular weight polyethylene, wherein the mass comprises free radicals, (b) immersing at least a portion of the mass of irradiated ultrahigh molecular weight polyethylene in a non-polar solvent having a temperature for a time and under conditions sufficient to quench a substantial portion of the free radicals contained therein, wherein the temperature of the non-polar solvent is maintained below the melting point of the ultrahigh molecular weight polyethylene, (c) removing the mass of irradiated ultrahigh molecular weight polyethylene from the non-polar solvent, and (d) removing any non-polar solvent from the mass of irradiated ultrahigh molecular weight polyethylene.

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Warsaw, IN, United States of America

Richard S King