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    • 2. 发明授权
    • Radial head implant apparatuses and methods
    • 径向头植入装置及方法
    • US07740661B2
    • 2010-06-22
    • US11210147
    • 2005-08-23
    • Mark BaratzMark CohenRobert J. BallVince Van DonckEric S. ReindelCorey Wilson-Wirth
    • Mark BaratzMark CohenRobert J. BallVince Van DonckEric S. ReindelCorey Wilson-Wirth
    • A61F2/38
    • A61F2/3804A61F2002/3809A61F2002/3827
    • Radial head implant apparatuses and methods are provided in accordance with the subject matter disclosed herein wherein a shaft and a head portion can be axially movable within a stem portion. In one embodiment, a radial head implant can include a head portion for articular engagement with a humerus bone, a stem portion for engagement with a radius bone, and a shaft for engagement with the stem portion. The head portion can include an upper surface for engaging the humerus bone. The stem portion can have an axial opening for receiving at least a portion of the shaft, and a collar can be disposed around the stem portion at a proximal end thereof. An upper portion of the shaft can be configured for engaging the head portion, while a lower portion of the shaft can be elongated and cylindrical for axially fitting into and moving within the axial opening of the stem portion. Other embodiments are also disclosed for axial movement for a radial head implant. Various structures are disclosed for locking the shaft in position within the stem portion.
    • 根据本文公开的主题提供径向头部植入装置和方法,其中轴和头部可以在杆部内轴向移动。 在一个实施例中,径向头部植入可以包括用于与肱骨相关联的头部部分,用于与半径骨接合的杆部分和用于与杆部分接合的轴部。 头部可以包括用于接合肱骨的上表面。 杆部分可以具有用于容纳轴的至少一部分的轴向开口,并且套环可以在其近端处设置在杆部分周围。 轴的上部可以构造成用于接合头部,而轴的下部可以是细长的和圆柱形的,用于轴向地装配到杆部分的轴向开口内并在杆部的轴向开口内移动。 还公开了用于径向头部植入物的轴向移动的其它实施例。 公开了用于将轴锁定在杆部分内的适当位置的各种结构。