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    • 1. 发明申请
    • BONE CEMENT COMPOSITE CONTAINING PARTICLES IN A NON-UNIFORM SPATIAL DISTRIBUTION AND DEVICES FOR IMPLEMENTATION
    • 在非均匀空间分布中含有颗粒的骨水泥复合材料和用于实施的装置
    • WO2007087400A2
    • 2007-08-02
    • PCT/US2007/002038
    • 2007-01-23
    • V-BOND THERAPEUTICS, LLCLIU, Y. KingLAU, Jan R.STALCUP, JohnLYSTER, Michael
    • LIU, Y. KingLAU, Jan R.STALCUP, JohnLYSTER, Michael
    • A61K6/08
    • A61L24/0073A61B17/8858A61L24/0005A61L27/44A61L2430/02
    • One embodiment of the invention comprises a differential composite (160) in which bone cement everywhere or substantially everywhere contains at least some non-zero volume fraction of particles (172, 174), and in which the local volume fraction of particles (172, 174) may vary from place (162) to place (164) in the composite (160) in a controlled manner. The variation may be by identifiable region (162, 164) or may be in the form of a gradient of the local volume fraction of particles (172, 174). In at least some places (164), the local volume fraction of particles (174) may be such that the particles (174) act as crack arrestors. Close to the interface with natural bone (162), the local volume fraction of particles (172) may be greater. In at least some places (162) adjoining natural bone (140), the local volume fraction of particles (172) may be such as to allow bone ingrowth into appropriate region(s) of the composite (160), resulting in improved interfacial shear strength. Methods and apparatuses for producing and delivering the composite (160) are also disclosed, which may include use of an introducer (208) and an expandable basket-type device (48).
    • 本发明的一个实施例包括差别复合材料(160),其中在任何地方或基本上其他地方的骨水泥包含至少一些非零体积分数的颗粒(172,174),其中颗粒的局部体积分数(172,174 )可以以受控方式从复合材料(160)中的位置(162)到位置(164)变化。 该变化可以是可识别区域(162,164),或者可以是颗粒(172,174)的局部体积分数的梯度的形式。 在至少一些地方(164)中,颗粒(174)的局部体积分数可以使得颗粒(174)用作抗裂剂。 靠近与天然骨(162)的界面,颗粒(172)的局部体积分数可能更大。 在邻近天然骨骼(140)的至少一些地方(162)中,颗粒(172)的局部体积分数可以是允许骨向内生长到复合材料(160)的合适区域中,导致改善的界面剪切 强度。 还公开了用于生产和输送复合材料(160)的方法和装置,其可以包括使用导引器(208)和可膨胀篮式装置(48)。