Bone implant
AssigneeMAN Ceramics GmbH
InventorsUlrich Wenner, Rudolf Dierl
Life of this patent
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Abstract
A bone implant is so designed that it consists of a main body, more particularly in the form of a core and unidirectional fibers, said core being surrounded by braided fiber configuration. The braided fiber configuration has an elevated fiber fraction in order to grain the surface of the braided structure. This grained surface aids the coalescent growth of natural bone tissue on the implant. The braided fiber configuration simultaneously serves as a torsion box.
Claims12
A bone implant of curved, irregular shape comprising a main body and a braided fiber structure on said main body constituting an outer layer of the implant, said braided fiber structure comprising a plurality of fibers wound over and under one another on said main body, each fiber being tightly twisted along a length of the fiber to produce a substantially circular cross-section of said fibers in the braided fiber structure and provide an irregular outer surface for the braided fiber structure which will facilitate intergrowth with bone material, said main body having an irregular cross-section related to the curved irregular shape of the bone implant so that when said fibers of said braided fiber structure are applied to said main body said braided fiber structure provides the finished curved, irregular shape of the bone implant and said outer layer thereof, said braided fiber structure further comprising a matrix material binding said fibers to one another and to said main body, said fibers being present in said braided fiber structure in an amount of 70% and said matrix material in an amount of 30%.
A bone implant of curved, irregular shape comprising a main body and a braided fiber structure on said main body constituting an outer layer of the implant, said braided fiber structure comprising a plurality of fibers wound over and under one another on said main body, and a matrix material binding said fibers together, each fiber being tightly twisted along a length of the fiber to produce a substantially circular cross-section of said fibers in the braided fiber structure and provide an irregular outer surface for the braided fiber structure which will facilitate intergrowth with bone material, said main body having an irregular cross-section related to the curved irregular shape of the bone implant so that when said braided fiber structure is applied to said main body said braided fiber structure provides the finished curved, irregular shape of the bone implant and said outer layer thereof, a second layer of fibers applied beneath the braided fiber structure, said fibers of said second layer being aligned with a longitudinal axis of the main body, and a second braided fiber structure beneath said fibers of said second layer.
A bone implant of curved, irregular shape comprising a main body and a braided fiber structure on said main body constituting an outer layer of the implant, said braided fiber structure comprising a plurality of fibers wound over and under one another on said main body, each fiber being tightly twisted along a length of the fiber to, produce a substantially circular cross-section of said fibers in the braided fiber structure and provide an irregular outer surface for the braided fiber structure which will facilitate intergrowth with bone material, said main body having an irregular cross-section related to the curved irregular shape of the bone implant so that when said braided fiber structure is applied to said main body said braided fiber structure provides the finished curved, irregular shape of the bone implant and said outer layer thereof, said braided fiber structure further comprising a matrix material binding said fibers to one another and to said main body, said fibers being-present in said braided fiber structure in an amount of 70% and said matrix material in an amount of 30%, said fibers of the braided fiber structure being oriented at an angle of .+-.45.degree. with respect to a longitudinal axis of the main body.
Dependencies are inferred from the claim text.