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    • 4. 发明授权
    • Orthopaedic prosthesis with access in collar
    • 矫形假体带领进入
    • US5163964A
    • 1992-11-17
    • US721730
    • 1991-06-26
    • Mark A. LazzeriRoy Y. Hori
    • Mark A. LazzeriRoy Y. Hori
    • A61B17/17A61F2/30A61F2/36A61F2/46
    • A61F2/3609A61B17/17A61B17/8847A61B17/175A61F2/367A61F2002/30772A61F2002/3627A61F2002/3643A61F2002/368A61F2002/4619
    • An orthopaedic prosthesis for implanation in a bone, the prosthesis including a collar extending outwardly therefrom. The collar includes an access recess aligned above the bone cement when the stem is implanted with cement in bone, or aligned above the bone/implant interface when the stem is biologically affixed to the bone. The access recess may be a dimple partially extending into the collar or it may be a through hole. The dimple provides a preset drill start for a drill to be aligned therewith for drilling through the collar to form a hole therethrough. In either case, whether starting with a dimple and then forming a hole or starting directly with a through hole, the hole may be progressively enlarged by use of sequentially larger drill sizes. Tools, such as chisels or the like, are inserted through the hole in the collar to break up the bone cement beneath the collar if a cemented stem, or to help break the bond between the stem and the bone if a biologically affixed stem, to help loosen the prosthesis from the bone to facilitate removal of the stem. A method of removing such a prosthesis is also disclosed.
    • 一种用于植入骨骼的矫形假体,所述假体包括从其向外延伸的颈环。 所述套环包括当所述杆在骨中植入骨水泥时在骨粘合剂上方对准的进入凹槽,或者当所述茎在生物学上固定于骨上时,所述进入凹槽对准骨/植入物界面上方。 进入凹槽可以是部分延伸到套环中的凹坑,或者它可以是通孔。 凹坑提供了一个预定的钻头开始,用于使钻头与钻头对齐,以钻穿套环以形成穿过其中的孔。 在任一情况下,无论是从凹坑开始然后形成孔还是直接从通孔开始,通过使用顺序地较大的钻孔尺寸,孔可以逐渐增大。 诸如凿子等的工具通过套环中的孔被插入,以便如果粘结的杆将骨水泥分开,如果是固定的杆,则有助于破坏杆和骨之间的粘结,如果生物固定的杆, 帮助松开骨骼上的假体以方便牙根的移除。 还公开了一种去除这种假体的方法。
    • 5. 发明授权
    • Femoral osteotomy guide assembly
    • 股骨截骨引导组件
    • US4959066A
    • 1990-09-25
    • US315101
    • 1989-02-24
    • Harold K. DunnMark A. LazzeriJeffrey M. Ondrla
    • Harold K. DunnMark A. LazzeriJeffrey M. Ondrla
    • A61B17/15A61B19/00
    • A61B17/15A61B90/06
    • An osteotomy guide assembly for femoral neck osteotomy includes a saddle locator assembly and a saw guide attachment. The saddle locator assembly includes a barrel-shaped locating device that locates the saddle region of the proximal femur. The barrel further includes a transverse support bar extending from the barrel. The barrel is positioned over an intramedullary shaft which is temporarily positioned in and extends from the medullary canal of the femur. A saw guide is used in conjunction with the saddle locator assembly. The saw guide is attached to the support bar by a single locking means which provides for positional adjustment of the saw guide relative to the support bar in two directions, including adjustment in the anterior-posterior direction along the transverse support bar and axially along the femur via a post which extends from the saw guide.
    • 用于股骨颈截骨的截骨引导组件包括鞍座定位器组件和锯条引导件附件。 鞍座定位器组件包括位于股骨近端的鞍区的桶形定位装置。 枪管还包括从枪管延伸的横向支撑杆。 枪管定位在髓内轴上,该髓内轴临时定位在股骨的髓质管中并从股骨的髓质管延伸。 锯子导轨与鞍座定位器组合一起使用。 锯条引导件通过单个锁定装置附接到支撑杆,该锁定装置提供了锯条引导件相对于支撑杆在两个方向上的位置调整,包括沿着横向支撑杆沿前后方向的调整并且沿着股骨的轴向 通过从锯导向件延伸的柱。