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IMPLANT CONTAINING COMPOSITE POWDER WITH MICRO-STRUCTURED CALCIUM SALT PARTICLES

机译:植入物含有微结构化钙盐颗粒的复合粉末

摘要

FIELD: medicine.;SUBSTANCE: invention relates to a method for manufacturing an implant. The method is carried out using composite powder with micro-structured particles, in which composite powder is initially obtained by binding large particles with small particles. Large particles have an average particle diameter in the range from 10 mcm to 10 mm and contain at least one absorbable thermoplastic polymer. Small particles are placed on the surface of large particles and/or are inhomogeneously distributed within large particles, and they contain calcium salt. Small particles have an average particle size in the range from 0.01 mcm to 1.0 mm. The implant is subsequently obtained by selective laser sintering of a composition containing composite powder. Composite powder particles have an average particle size d50 in the range from 10 mcm to less than 200 mcm, and a fine fraction of composite powder, which is defined as particles smaller than 20 mcm, is less than 50% of the volume. ;EFFECT: technical result is that the production of the implant, material of which has improved laser sinterability and, in particular, improved flowability, during laser sintering provides the possibility of creating improved quality and purity of the treatment of the component surface, as well as improved component density and shows, in particular, improved shrinkage characteristics and improved dimensional stability of obtained components, as well as better thermal conductivity outside the laser treatment area, necessary for the implant.;11 cl, 9 dwg, 3 tbl, 10 ex
机译:田地:医学。物质:发明涉及一种制造植入物的方法。该方法使用具有微结构颗粒的复合粉末进行,其中复合粉末最初通过用小颗粒结合大颗粒而获得。大颗粒的平均粒径为10mcm至10mm,含有至少一种吸收热塑性聚合物。将小颗粒放置在大颗粒的表面上和/或在大颗粒内不均匀地分布,它们含有钙盐。小颗粒的平均粒度为0.01mcm至1.0mm。随后通过选择性激光烧结含有复合粉末的组合物的选择性激光烧结来获得植入物。复合粉末颗粒的平均粒度D50在10mcm至小于200mcm的范围内,并且具有小于20mcm的颗粒的复合粉末的细部分小于体积的50%。 ;效果:技术结果是生产植入物,其材料具有改善的激光烧结性,特别是改善的流动性,在激光烧结期间,也提供了产生改善的质量和纯度的部件表面的质量和纯度的可能性随着改善的组分密度和表明,特别是改善了所得成分的收缩特性和改善的尺寸稳定性,以及植入物所需的激光处理区域以外的更好的导热率。; 11 cl,9 dwg,3 tbl,10例

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