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    Prosthetic implant procedure and femoral broach therefor
    2.
    发明授权
    Prosthetic implant procedure and femoral broach therefor 失效
    假体植入术和股骨拉刀

    公开(公告)号：US5089004A

    公开(公告)日：1992-02-18

    申请号：US145793

    申请日：1988-01-19

    申请人： Robert G. Averill ,  Robert C. Cohen

    发明人： Robert G. Averill ,  Robert C. Cohen

    IPC分类号： A61B17/00 ,  A61B17/16 ,  A61F2/00 ,  A61F2/36 ,  A61F2/46

    CPC分类号： A61B17/1668 ,  A61B17/1659 ,  A61F2/36 ,  A61B2017/00464 ,  A61F2/367 ,  A61F2/4684 ,  A61F2002/30405 ,  A61F2002/30606 ,  A61F2002/3631 ,  A61F2002/4631 ,  A61F2220/0025

    摘要： A procedure for contouring the wall of a femoral cavity in a femur for the reception of a femoral stem to be seated within the femoral cavity employs a femoral broach which includes cutting teeth aligned along peripherally spaced apart longitudinal rows extending along a portion of the outer surface of the blade of the broach for forming a multiplicity of alternating longitudinally extending generally parallel grooves and ribs in the wall of the cavity, at least some of the grooves being contiguous with harder portions of the bone of the femur while the ribs are comprised of softer portions of the bone so that completion of the contouring will be signalled by bottoming of the blade of the broach upon the harder portions of the bone and upon implant, the femoral stem will be seated upon the harder portions of bone while the softer portions of bone will be compressed between the femoral stem and the harder portions of bone to accomplish fixation by an interference fit. Upon completion of the contouring of the wall of the cavity, and prior to withdrawal of the blade of the femoral broach, the seated blade of the broach serves as a true gauge of the subsequent location of the femoral stem relative to the femur. A vented, interchangeable distal tip on the blade of the broach pilots the broach for precise alignment of the blade during the contouring procedure.

    摘要翻译： 用于在股骨中轮廓化股骨腔壁以用于接收股骨柄以置于股骨腔内的方法采用股骨拉刀，其包括沿着沿着外表面的​​一部分延伸的周向间隔开的纵向排列的切割齿 用于在腔的壁中形成多个交替的纵向延伸的大致平行的凹槽和肋条的拉刀的刀片，所述凹槽中的至少一些与股骨的骨的较硬部分邻接，而肋由较软的 骨骼的一部分，以便完成轮廓将通过将拉刀刀片的底部接触到骨骼的较硬部分并且在植入时被信号通知，股骨柄将被置于骨的较硬部分上，而较软的骨部分 将被压缩在股骨柄和骨骼的较硬部分之间以通过过盈配合来完成固定。 在完成腔的壁的轮廓之后，并且在股骨拉刀的刀片拔出之前，拉刀的座位刀片用作股骨柄相对于股骨的随后位置的真实尺寸。 在拉刀的刀片上通风，可互换的远端尖端引导拉刀，以在轮廓加工过程中精确地对准刀片。

    Prosthetic knee tibial component with axially ribbed keel and apparatus for effecting implant
    4.
    发明授权
    Prosthetic knee tibial component with axially ribbed keel and apparatus for effecting implant 失效
    具有轴向肋骨龙骨的假体膝盖胫骨部件和用于实施植入物的装置

    公开(公告)号：US5356414A

    公开(公告)日：1994-10-18

    申请号：US151983

    申请日：1993-11-15

    申请人： Robert C. Cohen ,  Robert G. Averill ,  Scott V. Cron

    发明人： Robert C. Cohen ,  Robert G. Averill ,  Scott V. Cron

    IPC分类号： A61B17/16 ,  A61B17/17 ,  A61F2/30 ,  A61F2/38 ,  A61F5/04

    CPC分类号： A61F2/3886 ,  A61B17/1604 ,  A61B17/1764 ,  A61F2/30771

    摘要： A tibial component of a prosthetic knee implant has a tibial tray, a post extending axially downwardly from a generally laterally central location beneath the tibial tray, and a keel including flanges extending laterally outwardly from the post and making an angle with one another so as to be directed toward relatively denser portions of the bone of the proximal tibia, and a plurality of ribs extending axially along each flange and spaced laterally from one another along the flange for enhancing the affixation and stability of the tibial component when implanted in the proximal tibia. Apparatus for preparing the proximal tibia for the reception of the tibial component includes a tibial punch and a tower selectively located at the proximal tibia, the tower having an axially extending guide bushing for placement above the proximal tibia and a channel extending laterally into the guide bushing for enabling the tibial punch to be inserted laterally into the guide bushing and then moved axially downwardly into the proximal tibia, while guided by the guide bushing, to establish a cavity in the proximal tibia for reception of the tibial component.

    摘要翻译： 假体膝关节植入物的胫骨部件具有胫骨托，从胫骨托的下方的大体侧向中心位置向下方延伸的柱，以及包括从柱侧向向外延伸并且彼此成角度的凸缘的龙骨，以便 被引导到胫骨近端的骨的相对较致密的部分，以及沿着凸缘轴向延伸并沿着凸缘彼此横向隔开的多个肋，用于当植入胫骨近端时增强胫骨部件的固定和稳定性。 用于准备用于接收胫骨部件的近端胫骨的装置包括胫骨冲头和选择性地位于胫骨近端处的塔架，所述塔架具有用于放置在近端胫骨上方的轴向延伸的引导衬套和横向延伸到引导衬套中的通道 用于使胫骨冲头横向插入导向衬套中，然后在由引导衬套引导的同时沿轴向向下移动到近侧胫骨中，以在近端胫骨中建立用于接收胫骨部件的空腔。

    Prosthetic knee tibial component with axially ribbed keel and apparatus for effecting implant
    8.
    发明授权
    Prosthetic knee tibial component with axially ribbed keel and apparatus for effecting implant 失效

    公开(公告)号：US5282866A

    公开(公告)日：1994-02-01

    申请号：US834675

    申请日：1992-02-12

    申请人： Robert C. Cohen ,  Robert G. Averill ,  Scott V. Cron

    发明人： Robert C. Cohen ,  Robert G. Averill ,  Scott V. Cron

    IPC分类号： A61B17/16 ,  A61B17/17 ,  A61F2/30 ,  A61F2/38

    CPC分类号： A61F2/3886 ,  A61B17/1604 ,  A61B17/1764 ,  A61F2/30771

    摘要： A tibial component of a prosthetic knee implant has a tibial tray, a post extending axially downwardly from a generally laterally central location beneath the tibial tray, and a keel including flanges extending laterally outwardly from the post and making an angle with one another so as to be directed toward relatively denser portions of the bone of the proximal tibia, and a plurality of ribs extending axially along each flange and spaced laterally from one another along the flange for enhancing the affixation and stability of the tibial component when implanted in the proximal tibia. Apparatus for preparing the proximal tibia for the reception of the tibial component includes a tibial punch and a tower selectively located at the proximal tibia, the tower having an axially extending guide bushing for placement above the proximal tibia and a channel extending laterally into the guide bushing for enabling the tibial punch to be inserted laterally into the guide bushing and then moved axially downwardly into the proximal tibia, while guided by the guide bushing, to establish a cavity in the proximal tibia for reception of the tibial component.

    Prosthetic acetabular cup and method of implant
    10.
    发明授权
    Prosthetic acetabular cup and method of implant 失效
    假体髋臼杯及植入法

    公开(公告)号：US5571201A

    公开(公告)日：1996-11-05

    申请号：US435971

    申请日：1995-05-05

    申请人： Robert G. Averill ,  Robert C. Cohen

    发明人： Robert G. Averill ,  Robert C. Cohen

    IPC分类号： A61B17/86 ,  A61F2/00 ,  A61F2/30 ,  A61F2/34

    CPC分类号： A61F2/34 ,  A61B17/86 ,  A61F2002/30164 ,  A61F2002/30322 ,  A61F2002/30337 ,  A61F2002/30449 ,  A61F2002/30476 ,  A61F2002/30682 ,  A61F2002/3082 ,  A61F2002/30823 ,  A61F2002/30828 ,  A61F2002/30835 ,  A61F2002/30883 ,  A61F2002/3401 ,  A61F2002/3424 ,  A61F2002/3443 ,  A61F2002/3456 ,  A61F2220/0025 ,  A61F2220/0033 ,  A61F2220/005 ,  A61F2230/0028 ,  A61F2250/0026

    摘要： An acetabular cup prosthetic device comprised of an outer shell component and a inner bearing insert and the method of implanting the acetabular cup prosthetic within a patient. The outer surface of the shell component for the present invention acetabular cup has a plurality of regions which conform to the curvature of at least one ellipsoid. To implant the shell component, the acetabulum of a patient is spherically reamed to a size slightly smaller than that of the outer surface of the shell component. As the shell component is inserted into the spherically shaped acetabulum, the interior surface of the acetabular cavity deforms to assume a substantially ellipsoidal curvature, producing an interference fit between the rim region of the shell component and the upper peripheral rim region of the acetabulum. The remaining surface regions of the acetabulum conform substantially to the ellipsoidal shape or shapes defined by the remaining surface regions of the shell component so that surface contact is established without the development of ejection forces therebetween.

    摘要翻译： 一种由外壳部件和内部轴承插入件组成的髋臼杯假体装置以及将髋臼杯假体植入患者体内的方法。 用于本发明的髋臼杯的外壳部件的外表面具有符合至少一个椭圆体的曲率的多个区域。 为了植入外壳部件，将患者的髋臼球形延伸至略小于外壳部件的外表面的尺寸。 当外壳部件被插入到球形髋臼中时，髋臼腔的内表面变形为呈现基本上椭圆形的曲率，从而在外壳部件的边缘区域和髋臼的上周边缘区域之间产生过盈配合。 髋臼的其余表面区域基本上符合由壳部件的其余表面区域限定的椭圆形状或形状，从而在不产生其间的排出力的情况下建立表面接触。