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14 条记录 (耗时 0.016 秒)

    VERTEBROPLASTY METHODS WITH OPTIMIZED SHEAR STRENGTH AND CRACK PROPAGATION RESISTANCE
    11.
    发明申请
    VERTEBROPLASTY METHODS WITH OPTIMIZED SHEAR STRENGTH AND CRACK PROPAGATION RESISTANCE 审中-公开
    VERTEBROPLASTY方法优化剪切强度和裂纹蔓延电阻

    公开(公告)号：US20080195112A1

    公开(公告)日：2008-08-14

    申请号：US12029413

    申请日：2008-02-11

    申请人： Y. King Liu ,  Jan R. Lau ,  John Stalcup ,  Michael T. Lyster

    发明人： Y. King Liu ,  Jan R. Lau ,  John Stalcup ,  Michael T. Lyster

    IPC分类号： A61B17/58 ,  A61M29/00 ,  A61B17/32

    CPC分类号： A61L24/0073 ,  A61B17/8858 ,  A61L24/0005 ,  A61L27/44 ,  A61L2430/02

    摘要： One embodiment of the invention comprises a differential composite in which bone cement everywhere or substantially everywhere contains at least some non-zero volume fraction of particles, and in which the local volume fraction of particles may vary from place to place in the composite in a controlled manner. The variation may be by identifiable region or may be in the form of a gradient of the local volume fraction of particles. In at least some places, the local volume fraction of particles may be such that the particles act as crack arrestors. Close to the interface with natural bone, the local volume fraction of particles may be greater. In at least some places adjoining natural bone, the local volume fraction of particles may be such as to allow bone ingrowth into appropriate region(s) of the composite, resulting in improved interfacial shear strength. Methods and apparatuses for producing and delivering the composite are also disclosed, which may include use of an introducer and an expandable basket-type device.

    摘要翻译： 本发明的一个实施方案包括差异复合材料，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，并且其中颗粒的局部体积分数可以在受控的 方式。 该变化可以是可识别区域，或者可以是颗粒的局部体积分数的梯度的形式。 在至少一些地方，颗粒的局部体积分数可以使得颗粒作为防裂器。 靠近与天然骨的界面，颗粒的局部体积分数可能更大。 在与天然骨相邻的至少一些地方，颗粒的局部体积分数可以是允许骨向内生长到复合材料的适当区域，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的方法和装置，其可以包括使用导引器和可膨胀篮式装置。

    VERTEBROPLASTY IMPLANT WITH ENHANCED INTERFACIAL SHEAR STRENGTH
    13.
    发明申请
    VERTEBROPLASTY IMPLANT WITH ENHANCED INTERFACIAL SHEAR STRENGTH 审中-公开
    VERTEBROPLASTY植入物具有增强的界面剪切强度

    公开(公告)号：US20090182427A1

    公开(公告)日：2009-07-16

    申请号：US12329342

    申请日：2008-12-05

    申请人： Y. King Liu ,  Jan R. Lau ,  Judson E. Threlkeld ,  Michael T. Lyster ,  John Stalcup

    发明人： Y. King Liu ,  Jan R. Lau ,  Judson E. Threlkeld ,  Michael T. Lyster ,  John Stalcup

    IPC分类号： A61F2/28

    CPC分类号： A61B17/7098 ,  A61B17/7095

    摘要： Methods and devices for augmenting bone, such as in performing vertebroplasty are disclosed. A bone implant with enhanced interfacial shear strength can include a container, such as a mesh bag, with a sidewall and an interior chamber portion. The sidewall can include an open-celled matrix and can be filled with a first media to promote bone ingrowth and enhanced interfacial shear strength. The interior chamber can be filled with a second media to prevent crack propagation. Delivery catheters with releasable coupling features to the implant are also disclosed.

    摘要翻译： 公开了用于增加骨骼的方法和装置，例如执行椎体成形术。 具有增强的界面剪切强度的骨植入物可以包括具有侧壁和内室部分的容器，例如网袋。 侧壁可以包括开孔基质，并且可以填充第一介质以促进骨向内生长并增强界面剪切强度。 内部腔室可以填充第二介质以防止裂纹扩展。 还公开了具有可释放的耦合特征到植入物的输送导管。