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    • 5. 发明申请
    • UNICOMPARTMENTAL TIBIAL COMPONENTS
    • WO2022148964A2
    • 2022-07-14
    • PCT/GB2022/050025
    • 2022-01-07
    • ZIMMER GMBHO'CONNOR, JohnDODD, ChristopherMURRAY, David Wycliffe
    • O'CONNOR, JohnDODD, ChristopherMURRAY, David Wycliffe
    • A61F2/30A61F2/38A61B17/17A61B17/1764A61F2/30767A61F2/389A61F2002/30028A61F2002/30838A61F2002/30891A61F2002/30892A61F2002/3092A61F2002/3093A61F2002/3895A61F2310/00796
    • Unicompartmental tibial components are described herein. A first unicompartmental component (10) comprises a plate (12) having a bearing surface (18) and an opposing surface (22) that is configured to be secured to a proximal end of a patient's tibia, wherein the plate further comprises an anterior end (24), an outer side (25), a posterior end (26) and an inner side (27), wherein a mediolateral width W of the plate is defined between the outer and inner sides, and a longitudinal anteroposterior axis (28) extends between the anterior and posterior ends approximately one third of the width of the plate (i.e. 1/3W) from the lateral side, and defines a longitudinal axis length L of the plate. A first elongate peg (14) protrudes from the opposing surface in the anterior portion, the first elongate peg defining a first peg axis (32). A second elongate peg (16) protrudes from the opposing surface in the anterior portion, the second elongate peg defining a second peg axis (34). The first and second peg axes are disposed at an angle of 45-70 degrees with respect to the longitudinal anteroposterior axis and are substantially parallel to one another such that the first and second pegs protrude posteriorly as well as distally with respect to the plate. An anterior portion of the plate comprises a part of the plate defined by an anterior 60% or less of the longitudinal axis length L, whilst a posterior portion of the plate comprises a part of the plate that is defined by the remaining posterior 40% or more of the longitudinal axis length L. The posterior portion of the opposing surface is free from pegs or other fixation devices, and the first and second elongate pegs are located more than half of the mediolateral width W of the plate from an outer edge of the plate. The component is configured for cementless fixation using an interference fit. Also described is a method of installation and a tool suitable for use in installation.
    • 6. 发明公开
    • ROTARY MILL
    • DREHMÜHLE
    • EP2667797A1
    • 2013-12-04
    • EP12703332.2
    • 2012-01-26
    • Biomet UK Healthcare Limited
    • MURRAY, David WycliffeDODD, ChristopherO'CONNOR, JohnALINEJAD, MonaLLOYD, RussellRIDLEY, Duncan Andrew
    • A61B17/16A61B17/17
    • A61B17/1675A61B17/16A61B17/1613A61B17/1615A61B17/1617A61B17/1662A61B17/17A61B17/1739A61B17/1764A61B2017/1602A61F2/3859A61F2/4684A61F2002/3863
    • A rotary mill is disclosed comprising a body portion (4) having a milling surface (10) and a central bore (20) extending along an axis of rotation (18) of the body portion (4); and a guide portion (6) having a guide body (22) and a guide peg (24) extending from the guide body (22), the guide peg (24) operable to be received in the central bore (20) of the body portion (4), the guide body (22) having at least one alignment feature (28, 30) which is the same as that of a prosthesis component. A method of implanting a unicondylar femoral component is also disclosed, the method comprising, a) reaming the femoral condylar surface to accept the unicondylar femoral component; b) drilling peg holes for affixing the unicondylar femoral component; c) affixing a guide portion of a rotary mill onto the prepared condylar surface using the drilled peg holes; d) reaming a portion of bone anterior to the affixed guide portion; e) removing the guide portion from the bone; and f) affixing a unicondylar femoral component to the prepared condylar surface.
    • 公开了一种旋转磨机,包括具有铣削表面(10)的主体部分(4)和沿主体部分(4)的旋转轴线(18)延伸的中心孔(20)。 以及具有引导体(22)和从引导体(22)延伸的引导钉(24)的引导部分(6),所述引导钉(24)可操作地被容纳在主体的中心孔(20)中 部分(4),所述引导体(22)具有与假体部件相同的至少一个对准特征(28,30)。 还公开了一种植入单髁股骨部件的方法,所述方法包括:a)铰接股骨髁表面以接受单髁股骨部件; b)钻孔用于固定单髁股骨组件; c)使用钻孔将所述旋转磨机的引导部分固定到所制备的髁表面上; d)在固定的引导部分前面扩张一部分骨骼; e)从所述骨头移除引导部分; 和f)将单髁股骨组件固定在制备的髁表面上。