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    • 2. 发明申请
    • Stent
    • 支架
    • US20050015136A1
    • 2005-01-20
    • US10490736
    • 2002-10-16
    • Ken IkeuchiKouji MoriHiroo IwataKazuaki MitsudouHiroaki NomiyamaYoshiharu YoshikawaMasatoshi WatanabeShuzou YamashitaKazunori Murakami
    • Ken IkeuchiKouji MoriHiroo IwataKazuaki MitsudouHiroaki NomiyamaYoshiharu YoshikawaMasatoshi WatanabeShuzou YamashitaKazunori Murakami
    • A61F2/915A61M29/02A61F2/06
    • A61F2/915A61F2/91A61F2002/91533A61F2002/91558A61F2002/91575
    • A stent (1) having a generally tubular body formed of ring units formed of a plurality of cells each and being expandable in the radius direction thereof from inside, wherein each ring unit (4) is constituted of the plurality of cells (6) connected to one another above and below and arranged so as to surround the center line (C1) of the stent forming said tubular body, the ring units are arranged in the axial direction of the stent, ring units are connected through at least one site with connector portions (5), each connector portion is formed of curved portions (8) having at least 2 arches and a generally linear portion (7) continued thereto and therefrom, 3 to 8 cells are arranged in the axial direction of the stent per 10 mm of the length of the stent, and the ratio of the length (6L) of the cell in the axial direction of the stent and the length (5L) of the connector portion in the axial direction of the stent is determined such that on the basis that when the length of the cell in the axial direction of the stent is taken as 100, the length of the connector portion in the axial direction of the stent is 50 to 100, thereby high flexibility and radial sustaining force are secured, the stent is improved in capability of dilating a blood vessel, and foreshortening and a flare phenomenon can be prevented.
    • 一种支架(1),其具有由多个单元形成的环状单元形成的大致管状体,所述多个单元各自由内部向其半径方向扩展,其中,每个环形单元(4)由连接的多个单元(6)构成 并且布置成围绕形成所述管状体的支架的中心线(C1)布置,环形单元沿支架的轴向布置,环形单元通过至少一个位置连接到连接器 部分(5),每个连接器部分由具有至少2个拱形部分和大致直线部分(7)连续的弯曲部分(8)形成,并且由此在支架的轴向方向上每10mm设置3至8个电池 支架长度的长度(6L)与支架轴向长度(6L)与连接器部分在支架轴向方向上的长度(5L)的比值确定为: 当细胞的长度在 将支架的轴向取为100,连接器部分在支架的轴向上的长度为50〜100,由此确保高柔性和径向维持力,支架能够提高血管扩张能力 ,并且可以防止缩短和闪光现象。
    • 4. 发明授权
    • Method for producing medical materials
    • 生产医疗材料的方法
    • US5597456A
    • 1997-01-28
    • US595835
    • 1996-02-02
    • Tohru MaruyamaMichio AbeHiroaki NomiyamaSachiko OkazakiMasuhiro KogomaMakoto Kodama
    • Tohru MaruyamaMichio AbeHiroaki NomiyamaSachiko OkazakiMasuhiro KogomaMakoto Kodama
    • A61L29/00A61L33/00B29C59/14B29C71/04B29D23/00C08J7/00B01K1/00B05D3/06
    • A61L33/0094B29C59/142
    • A plastic tube extruded from an extruder is conveyed through a plasma treatment apparatus. The plasma treatment apparatus is equipped with a tubular electrode body having a high-voltage side electrode and a grounded-side electrode disposed on a tubular insulator and a high frequency electric power source connected to the electrodes. When the plastic tube is conveyed through the electrode body with one end of the tube open to the atmosphere, a mixture of a glow discharge-stabilizing gas and a treating gas is fed into the other end of the tube and an alternating-current high-voltage is applied to generate a plasma region at a pressure near to atmospheric pressure in which the tube is treated with a glow discharge plasma. This method allows an interior and/or exterior surface of a plastic tube designed to convey a medical fluid to be continuously treated by a glow discharge plasma at atmospheric pressure to form an anti-thrombotic and blood-compatible film on the surface treated. The resulting surface-treated medical material can be produced at a comparatively low cost and maintains its original bulk material properties.
    • 从挤出机挤出的塑料管被输送通过等离子体处理装置。 等离子体处理装置配备有管状电极体,其具有设置在管状绝缘体上的高压侧电极和接地侧电极以及与电极连接的高频电力源。 当塑料管通过电极体输送到管的一端向大气开放时,辉光放电稳定气体和处理气体的混合物被供给到管的另一端, 施加电压以在接近大气压的压力下产生等离子体区域,其中用辉光放电等离子体处理管。 该方法允许塑料管的内表面和/或外表面设计成输送在大气压下由辉光放电等离子体连续处理的医用流体,以在被处理的表面上形成抗血栓形成和血液相容性膜。 得到的经表面处理的医用材料可以以相对较低的成本制造并保持其原始的散装材料性质。