Locking screw system with relatively hard spiked polyaxial bushing
    51.
    发明授权
    Locking screw system with relatively hard spiked polyaxial bushing 有权
    锁紧螺丝系统具有相对硬的多轴衬套

    公开(公告)号:US08388666B2

    公开(公告)日:2013-03-05

    申请号:US11862869

    申请日:2007-09-27

    IPC分类号: A61B17/80

    CPC分类号: A61B17/8047 A61B17/8057

    摘要: A polyaxial locking screw system includes a bone plate defining a plate hole with an inner spherical surface and a relatively harder split polyaxial bushing with a outer spherical surface provided within the plate hole for receiving a bone screw. In one embodiment, the plate is formed from titanium alloy, while the bushing is formed from a cobalt chrome alloy. The outer surface of the polyaxial bushing includes a plurality of spikes. When the screw is inserted into the bushing, since the bushing material is considerably harder than the plate material, the forceful expansion of the bushing during screw insertion causes the spikes to penetrate into the inner spherical surface of the hole, thereby increasing the frictional engagement of the bushing to the plate to lock the screw at a desired angle.

    摘要翻译: 多轴锁定螺钉系统包括限定具有内球面的板孔的骨板和具有设置在板孔内的用于接收骨螺钉的外球面的相对较硬的分裂多轴衬套。 在一个实施例中,板由钛合金形成,而衬套由钴铬合金形成。 多轴衬套的外表面包括多个尖钉。 当螺钉插入衬套中时,由于衬套材料比板材料硬得多,所以在螺钉插入期间衬套的强力膨胀导致尖峰穿透到孔的内球面中,从而增加了 衬套到板上以将螺丝锁定在所需的角度。

    Distraction assembly
    52.
    发明授权
    Distraction assembly 失效
    分心装配

    公开(公告)号:US08226655B1

    公开(公告)日:2012-07-24

    申请号:US11825324

    申请日:2007-07-05

    IPC分类号: A61B17/60

    CPC分类号: A61B17/666 A61C8/0006

    摘要: A distraction assembly for automatically facilitating bone growth which may be required for the application of a dental implant is presented. A drive assembly is dimensioned and configured to be anchored within the mouth of a patient and includes a drive component and a timing assembly collectively disposed and structured to drive at least one displacement member along a predetermined path of travel, wherein the displacement member is connected to a bone segment associated with the implant site. The drive component and timing assembly are further cooperatively structured and disposed to cause incremental advancement of said displacement member along the predetermined path of travel and concurrent displacement of the bone segment relative to the implant site at a constant or otherwise predetermined rate.

    摘要翻译: 提出了一种用于自动促进牙齿植入物所需的骨生长的牵引组件。 驱动组件的尺寸和构造被固定在患者的口中,并且包括驱动部件和定时组件,其共同地设置和构造成沿着预定的行进路径驱动至少一个位移部件,其中移位部件连接到 与植入部位相关联的骨段。 驱动部件和定时组件进一步协同地构造和设置成使得所述位移构件沿着预定行进路径的增量前进,并以恒定的或以其他方式预定的速率同时移位骨段相对于植入部位。