Liners for medical joint implants with improved wear-resistance

摘要

A polymeric liner for joint implants includes at least one friction reducing member and at least one body member. The friction reducing member is made of a polymeric matrix which contains a polymeric material and at least one nanotube nanoparticle having a volume concentration of between 5%-99% v/v (volume per volume). The body member is formed of at least a polymeric material. The friction reducing member and the body member are conjoined preferably by compression molding or any other method of coupling such as mold injection, 3D printing, adhesion or any other suitable method can be applied. A method produces the polymeric.

主权项

1. A polymeric liner for a medical joint implant, comprising:
at least one friction reducing member having at least one outer surface and at least one inner surface, and at least one body member having at least one inner surface in contact with said at least one friction reducing member inner surface, wherein said at least one body member and said at least one friction reducing member are separate components, wherein at least one of said at least one friction reducing member is positioned on a surface area of said polymeric liner, said surface area contacts a moving part of said medical joint implant; and wherein said at least one friction reducing member and said at least one body member are prepared from a polymeric matrix comprising a polymeric material and at least one metal chalcogenides or dichalcogenides nanoparticle, wherein said at least one metal chalcogenides or dichalcogenides nanoparticle is distributed within said polymeric matrix, and wherein said at least one metal chalcogenides or dichalcogenides nanoparticle is selected from the group consisting of: nanotubes nanoparticles of tungsten disulfide (WS2); and molybdenum disulfide (MoS2).