Cup with crosslinked polymer layer cable ties
OwnerDerek James Wallace McMinninventor
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Abstract
This invention related to a method of forming a polymer component and comprises blending polymer particles with antioxidant to form a mixture in which the antioxidant coats the polymer particles, irradiating the polymer particles to cross-link the polymer particles therein and forming the irradiated mixture into a consolidated component. The invention also relates to a method of forming an articular surface for a prosthesis and a prosthesis having a polymer articular bearing surface wherein at least one predetermined portion of the bearing surface is provided with cross-linked polymer bonds.
Claims19
An acetabular cup prosthesis comprising a metal outer shell and a polymer inner liner, wherein an attachment means is provided which (i) projects from or through a terminal edge of the polymer liner and (ii) is configured for attachment of the cup to an introducer configured for insertion of the cup into a patient.
An acetabular cup prosthesis comprising a metal outer shell and a polymer inner liner, wherein an attachment means is provided which projects from or through the polymer liner for attachment of the cup to an introducer configured for insertion of the cup into a patient,
- wherein (i) the attachment means comprises one or more rods, and (ii) the rods are provided with an enlarged portion at their free ends configured for gripping by an introducer.
An acetabular cup prosthesis comprising a metal outer shell and a polymer inner liner, wherein an attachment means is provided which projects from or through the polymer liner for attachment of the cup to an introducer configured for insertion of the cup into a patient,
- wherein (i) the attachment means comprises one or more rods, and (ii) the rods include a neck configured such that rotation of the rod with respect to the inner liner and/or outer shell will cause the rod to shear at the neck.
Dependencies are inferred from the claim text.