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39 条记录 (耗时 0.014 秒)

    Method and device for using extended interference fit screw shanks for spinal stabilization
    1.
    发明授权
    Method and device for using extended interference fit screw shanks for spinal stabilization 有权

    公开(公告)号：US07104991B2

    公开(公告)日：2006-09-12

    申请号：US10083332

    申请日：2002-02-25

    申请人： Robert A Dixon ,  Donald J. Hackman

    发明人： Robert A Dixon ,  Donald J. Hackman

    IPC分类号： A61B17/70

    CPC分类号： A61B17/8052 ,  A61B17/1728 ,  A61B17/1757 ,  A61B17/7059 ,  A61B17/8057

    摘要： A device and a method for stabilizing vertebrae in a human spine for the purpose of fixing one vertebra with respect to other vertebrae and with respect to other parts of the spinal column. This device comprises bone screws that clamp to a plate to maintain the plate in contact with the vertebrae. The device may be fabricated from non-metals, metal, alloys, or composite materials. A tapered screw head is pulled into the plate with the taper extending through the plate into the underlying bone. Extending the taper into the bone moves the screw thread stress raiser into an area of lesser deflection. This strengthens the fixation by increasing the rigidity and reducing the risk of screw breakage. Extending the taper into the underlying bone has also been shown to strengthen the taper lock.

    Cam action vertebral spreader
    2.
    发明授权
    Cam action vertebral spreader 有权
    凸轮动作椎体吊具

    公开(公告)号：US06709438B2

    公开(公告)日：2004-03-23

    申请号：US09923063

    申请日：2001-08-06

    申请人： Robert A Dixon ,  Donald J Hackman

    发明人： Robert A Dixon ,  Donald J Hackman

    IPC分类号： A61B1766

    CPC分类号： A61B17/025 ,  A61B2017/0256 ,  A61B2017/2933

    摘要： This invention comprises an apparatus and a method of spreading an intervertebral space to help guide tools that will prepare the vertebrae for accepting an implant. The spreader is a thin blade with cam surfaces forming a paddle on the proximal end, which spreads the vertebra when rotated 90 degrees about its axis. A stem between the paddle and a handle is notched to clear the vertebral protrusions so the vertebra will be distracted on the vertebral end plates. Since the spreader is in the center of the end plates, the centerline of the spreader shaft will coincide with the vertebral end plate centerline. The surgeon can monitor the spreading, stop and remove the spreader to make adjustments or to change the size of spreader as required at the time of the surgery. Once the vertebrae are distracted a tube may be placed over the handle and aligned with the vertebral end plates.

    摘要翻译： 本发明包括扩展椎间空间的装置和方法，以帮助引导准备用于接受植入物的椎骨的工具。 撒布机是一种薄刀片，凸轮表面在近端形成一个桨叶，当围绕其轴线旋转90度时，椎骨会扩展椎骨。 在桨和手柄之间的杆被切口以清除脊椎突起，使得椎骨将在椎骨端板上分心。 由于吊具位于端板的中心，所以吊具轴的中心线与椎体终板中心线重合。 外科医生可以根据手术时的需要监测扩张，停止和移除吊具进行调整或改变吊具的尺寸。 一旦椎骨分心，可以将管子放置在手柄上并与椎骨端板对齐。

    Method utilizing chemical bonding to improve the bone screw fixation interface
    3.
    发明授权
    Method utilizing chemical bonding to improve the bone screw fixation interface 有权

    公开(公告)号：US06666870B2

    公开(公告)日：2003-12-23

    申请号：US10034815

    申请日：2001-12-27

    申请人： Robert A Dixon ,  Donald J. Hackman

    发明人： Robert A Dixon ,  Donald J. Hackman

    IPC分类号： A61B1756

    CPC分类号： A61L24/06 ,  A61B17/7059 ,  A61B17/80 ,  A61B17/866 ,  C08L35/04

    摘要： This invention relates to a method and materials in combination for bonding screws to a fixation plate or to a skeletal bone using chemical means. The chemicals include solvents, glues, or bonding agents, which act to improve the strength of bone screw to plate or the bone screw to skeletal bone interface. Interface refers to the contact area between the bone screw and either the plate or skeletal bone. The fixation device usually comprises a plate with bone screws implanted within the human skeleton. The bone screw maintains the plate in contact with the bone or maintains another structure such as a tendon in contact with the bony skeleton. The chemical bonding is in addition to or in place of a mechanical means to bond the bone screw to the fixation plate or to the skeletal bone. It provides for added strength to the bone screw interface with a plate or skeletal bone, reducing the probability of screw loosening and or migration.

    Pressure relief device
    6.
    发明授权
    Pressure relief device 失效
    减压装置

    公开(公告)号：US5791367A

    公开(公告)日：1998-08-11

    申请号：US591829

    申请日：1996-01-25

    申请人： Donald J. Hackman ,  William D. Ingle

    发明人： Donald J. Hackman ,  William D. Ingle

    IPC分类号： F16K17/38

    CPC分类号： F16K17/383 ,  Y10T137/1812

    摘要： A pressure relief device that is normally closed and that moves into an open condition under certain design parameters which require fluid to flow from a relatively high-pressure chamber within a vessel to a relatively low-pressure atmosphere surrounding the pressure relief device. A plug housing has a throughbore which forms communication between the chamber within the vessel and the outside atmosphere. A plug is positioned within the throughbore. A fusible alloy at least partially fills a void or a passageway which is preferably formed between the plug and the plug housing. In an upset condition, such as an external fire, the temperature of the fusible alloy rises and thereby softens or melts the fusible alloy. As the fusible alloy softens, the bonding and shear strengths of the fusible alloy are reduced. The relatively high-pressure fluid acting upon the plug preferably forces or blows at least a portion of the plug out of the throughbore. As the plug blows out of the throughbore it opens a relatively large unrestricted opening through which fluid within the vessel can be vented at a relatively high flowrate.

    摘要翻译： 一种压力释放装置，其通常是闭合的并且在某些设计参数下移动到开放状态，这些设计参数需要流体从容器内的相对高压室流到围绕压力释放装置的相对低压的气氛。 插头壳体具有在容器内的室与外部气氛之间形成连通的通孔。 插头位于透孔内。 可熔合金至少部分地填充优选形成在插头和插头壳体之间的空隙或通道。 在诸如外部火灾的不稳定状态下，熔融合金的温度升高，从而软化或熔化易熔合金。 随着易熔合金的软化，可熔合金的结合力和剪切强度降低。 作用在塞子上的相对高压的流体优选地迫使或吹动至少一部分塞子离开通孔。 当塞子从通孔吹出时，其打开相对较大的不受限制的开口，容器内的流体可以以相对高的流量排出。

    Portable balanced motion compensated lift apparatus
    8.
    发明授权
    Portable balanced motion compensated lift apparatus 失效
    便携式平衡运动补偿提升装置

    公开(公告)号：US4593885A

    公开(公告)日：1986-06-10

    申请号：US626009

    申请日：1984-06-29

    申请人： Donald J. Hackman ,  Don W. Caudy ,  Leslie F. Nikodem

    发明人： Donald J. Hackman ,  Don W. Caudy ,  Leslie F. Nikodem

    IPC分类号： B66C13/02 ,  B66D1/52 ,  B66D3/06

    CPC分类号： B66C13/02 ,  Y10S254/90

    摘要： A motion compensating device that is installed on a lift line between a crane and an object to be lifted. The device limits dynamic loads on the line by taking up and letting out line by preventing the lift line from going slack and by lengthening acceleration time. The device consists of a hydraulic system and sheave mechanical system arranged in combination together with a balancing system for a given load range. The device is balanced for a given load range to provide a full range of compensation while hanging free. Balance is provided by offsetting a load line a calculated distance Y from a vertical line drawn through a lift point. This offset compensates for turning moments of the apparatus.

    摘要翻译： 一种运动补偿装置，其安装在起重机与被提升物体之间的升降线上。 该装置通过防止升降线松弛和延长加速时间来限制线路上的动态负载。 该装置由液压系统和滑轮机械系统组成，与给定负载范围的平衡系统组合在一起。 该装置在给定的负载范围内是平衡的，以便在悬挂时提供全方位的补偿。 通过将负载线与通过提升点绘制的垂直线偏移计算距离Y来提供平衡。 该偏移补偿了装置的转矩。

    Method and apparatus for dynamized spinal stabilization
    9.
    发明授权
    Method and apparatus for dynamized spinal stabilization 有权
    用于动态脊柱稳定的方法和装置

    公开(公告)号：US06645207B2

    公开(公告)日：2003-11-11

    申请号：US09846956

    申请日：2001-05-01

    申请人： Robert A. Dixon ,  Donald J. Hackman

    发明人： Robert A. Dixon ,  Donald J. Hackman

    IPC分类号： A61B1770

    CPC分类号： A61B17/66 ,  A61B17/7007 ,  A61B17/701 ,  A61B17/7049

    摘要： An improved device and a method for stabilizing lumbar vertebrae in a human spine for the purpose of fixing the vertebra with respect to other vertebra and with respect to other parts of the spinal column. This device comprises a plate, bone screws, bone screw clamp portion, spacers, and rigidizing stop locks. The bone screw clamps may be clamped firmly to the plate for a fully rigid system. Alternatively the screw clamp portions may be held apart, with clearance between them and the plate, which will allow for axial motion of the screw with respect to the plate for implant load sharing and dynamized motion.

    摘要翻译： 一种改进的装置和用于在人类脊柱中稳定腰椎的方法，其目的是相对于其他椎骨固定椎骨并相对于脊柱的其他部分固定。 该装置包括板，骨螺钉，骨螺钉夹具部分，间隔件和刚性止动锁。 骨螺钉夹具可以牢固地夹紧在板上用于完全刚性的系统。 或者，螺钉夹紧部分可以被保持分开，并且它们与板之间有间隙，这将允许螺钉相对于板的轴向运动用于植入物负载共享和动态运动。