Depuy Products, Inc.

Mark D Hanes

Richard S King

Todd Smith

Luke J Aram

Disclosed is a polymeric orthopaedic bearing material for use as an implant material or part thereof comprising one or more crosslinked regions and one or more non-crosslinked or substantially non-crosslinked regions at the surface. The bearing material can be prepared from a crosslinkable polymer, e.g., ultrahigh molecular weight polyethylene. The orthopaedic bearing material has an advantageous combination of at least one wear property and at least one mechanical property. Also disclosed are processes for producing orthopaedic bearing materials, for example, by irradiating a raw material in consolidated form through a radiation mask having a perforated pattern for crosslinking selected regions of the raw material, and optionally shaping the raw material into a bearing material. Alternatively, a pulsed radiation beam can be used for crosslinking.

Orthopaedic bearing material

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.

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

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

Medical implant or medical implant part

A prosthetic implant includes first, second and third components. The first component is configured to be disposed within the acetabulum. The second component is in a load bearing relationship with the first component, and is operable to rotate in a first axis of rotation. The second component is inhibited from movement in a second axis of rotation. The third component is in a load bearing relationship with the second component. The third component is operable to rotate in the second axis of rotation, but is inhibited from movement with the first axis of rotation.

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Winona Lake, IN, United States of America

Mark D Hanes