OBA SHUSUKE,大庭 秀介,YAMAGUCHI SHOGO,山口 将吾,SAWAMURA TAKENORI,澤村 武憲
申请号:
JP2012053618
公开号:
JP2013184878A
申请日:
2012.03.09
申请国别(地区):
JP
年份:
2013
代理人:
摘要:
PROBLEM TO BE SOLVED: To provide a bioabsorbable implant having high usability maintaining a shape not only during compensation operation but also until a completion of the compensating operation even while holding excellent bone binding performance and a method for producing the same.SOLUTION: A bioabsorbable implant is formed of bioabsorbable ceramics and satisfies the following conditions and has a porous structure. A method for bioabsorbable implant is characterized by having a granule preparing step of the bioabsorbable ceramics, a granule mixing step of obtaining a granule mixture by mixing a granule and combustible organic particle in which 50% accumulated particle sizes are together 100 μm or less and 300 μm such that the volume ratio of the combustible organic particle is 20% or more and less than 40%, a shaping step of shaping the granule mixture by a pressure of 200 kg/cm2 or more, and a sintering step of sintering the shaped body. The condition: the volume ratio of pores having a fine pore size of 3 μm to all of pores is 25% or more and less than 80%, a porosity is 30% or more and less than 40%, and a compression strength is 20 MPa.COPYRIGHT: (C)2013,JPO&INPIT【課題】優れた骨結合能力を保持しつつも補填作業時はもちろん補填作業が完了するまで形状を保持する高い有用性を有する生体吸収性インプラント及びその製造方法の提供。【解決手段】生体吸収性セラミックスで形成され、下記条件を満足する多孔質構造を有する生体吸収性インプラント、並びに、生体吸収性セラミックスの顆粒調製工程と、50%積算粒子径が共に100μm以上300μm未満の顆粒及び可燃性有機粒子を可燃性有機粒子の体積割合が20%以上40%未満となるように混合して顆粒混合物を得る顆粒混合工程と、顆粒混合物を200kg/cm2以上の圧力で成形する成形工程と成形体を焼成する焼成工程とを有することを特徴とする生体吸収性インプラントの製造方法。条件:全気孔に対する3μm以上の細孔径を有する気孔の体積率が25%以上80%未満、気孔率が30%以上40%未満、かつ圧縮強度が20MPa以上【選択図】 図1