发明名称 |
SPINAL FIXATOR REDUCTION FRAME |
摘要 |
SPINAL FIXATOR REDUCTION FRAME A reduction frame according to the present invention is secured to shaft handles extending from the pedicle screws of a Vermont Spinal Fixator type implant. Shaft clamps secure two T-handles of the reduction frame to the shaft handles. A lower-rod assembly joins the two opposite T-frames by means of lower-rod clamps. The shaft clamps are provided with four degrees of freedom. The joint between the lower-rod assembly and T-handle is provided with five degrees of freedom. The lower-rod assembly and the T-handle are provided with power screw threads to allow for precise translational control. The shaft clamps and lower-rod clamps are provided with taper fit joints to allow for infinite rotational adjustment and fixture. An upper-rod assembly is also provided on the T-handles to produce rotation of the T-handles by providing means for changing the distance between the upper ends of the T-handles. Finger grips are provided on the upper-rod assembly to allow the surgeon to easily use one hand to either apply or monitor the force acting along the upper-rod.
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申请公布号 |
CA2058746(A1) |
申请公布日期 |
1992.08.16 |
申请号 |
CA19922058746 |
申请日期 |
1992.01.03 |
申请人 |
PFIZER HOSPITAL PRODUCTS GROUP, INC.;KRAG, MARTIN H. |
发明人 |
KRAG, MARTIN H.;CROMBIE, JOHN S. |
分类号 |
A61B17/60;A61B17/56;A61B17/70;A61B17/88;A61F2/78;(IPC1-7):A61B17/58 |
主分类号 |
A61B17/60 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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