Sintered coatings for implantable prostheses
    7.
    发明授权
    Sintered coatings for implantable prostheses 失效
    用于可植入假体的烧结涂层

    公开(公告)号:US5405389A

    公开(公告)日:1995-04-11

    申请号:US19417

    申请日:1993-02-18

    摘要: A sintered coating (13) for an implantable prosthesis (10) is provided having 1) interstices into which tissue or bone can grow, and 2) increased surface roughness which provides enhanced initial press-fit fixation. In certain embodiments, the coating includes at least two sets of particles (46,48) having different mean diameters. The sizes and numbers of particles are chosen so as to produce a matrix of smaller particles (48) in which are embedded a lesser number of spaced-apart larger particles (46). The smaller particles (48) provide support for the larger particles (46), and the larger particles (46) stand proud of the smaller particles (48) to provide the enhanced surface roughness. In other embodiments, the coating includes both generally smaller spherically-shaped (SS) particles and generally larger non-spherically-shaped (NSS) particles, with the NSS particles providing enhanced surface roughness and the SS particles providing support for the NSS particles.

    摘要翻译: 提供了一种用于可植入假体(10)的烧结涂层(13),其具有1)组织或骨骼可以生长的间隙,以及2)增加的表面粗糙度,其提供增强的初始压配合固定。 在某些实施方案中,涂层包括具有不同平均直径的至少两组颗粒(46,48)。 选择颗粒的尺寸和数量以便产生较小颗粒(48)的基质,其中嵌入较少数量的间隔较大的较大颗粒(46)。 较小的颗粒(48)为较大的颗粒(46)提供支撑,并且较大的颗粒(46)使较小的颗粒(48)引起骄傲以提供增强的表面粗糙度。 在其它实施方案中,涂层包括通常较小的球形(SS)颗粒和通常较大的非球形(NSS)颗粒,其中NSS颗粒提供增强的表面粗糙度,并且SS颗粒为NSS颗粒提供支撑。