New prosthesis parts, their preparation and their application
AssigneesAgence Nationale de Valorisation de la Recherche (ANVAR), Institut National de la Sante et de la Recherche Medicale
InventorsMichel Vert, Francois Chabot, Jean Leray, Pascal Christel
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Abstract
Osteosynthesis parts are made of an absorbable polymer composition consisting of a matrix of lactic acid homopolymer, or a copolymer very high in lactic acid units, having discrete reinforcement elements embedded therein. The reinforcement elements are made of glycolic acid homopolymer or copolymers predominant in glycolic acid units. Such a composition may be shaped with a minimum of polymer degradation into osteosynthesis parts exhibiting good resilience, shock resistance, and tensile strength.
Claims21
An osteosynthesis part, in the shape of a three-dimensional solid, and made of a bio-compatible, absorbable polymer, comprises composite parts constituted by a matrix of polylactic acid or a copolymer thereof;
- said copolymer comprising at least 90% of units derived from lactic acid, said matrix containing a reinforcement element in the shape of fibers, threads, films, fabrics, or strands embedded therein and present in an amount of 5 to 50% by weight based on the total weight of the osteosynthesis part, said element being made of polyglycolic acid or a copolymer thereof, and containing optionally a charge capable of stimulating the absorption of the polymer for the benefit of a newly formed tissue.
An osteosynthesis part, in the shape of a three-dimentional solid, and made of a bio-compatible, absorbable polymer, consisting of a homopolymerized polylactic acid matrix having embedded therein a reinforcement element made of polyglycolic acid and containing a charge capable of stimulating the absorption of the polymer for the benefit of newly formed tissue.
An osteosynthesis part, in the shape of a three-dimensional solid, and made of a bio-compatible, absorbable polymer, consisting of a homopolymerized polylactic acid matrix having embedded therein a reinforcement element made of polyglycolic acid or a copolymer thereof, said reinforcement element being present in an amount of 5 to 50% by weight based on the total weight of the osteosynthesis part.
Dependencies are inferred from the claim text.