公开(公告)号：US20160262912A1

公开(公告)日：2016-09-15

申请号：US14544999

申请日：2015-03-13

申请人： Brian G. Burnikel ,  Alexander J. Burnikel

发明人： Brian G. Burnikel ,  Alexander J. Burnikel

IPC分类号： A61F2/46 ,  F16H19/04 ,  A61F2/36

CPC分类号： F16H19/04 ,  A61F2/3609 ,  A61F2/4684 ,  A61F2002/30507 ,  A61F2002/30523 ,  A61F2002/3055 ,  A61F2002/3645 ,  A61F2220/0025 ,  A61F2310/00017 ,  A61F2310/00023

摘要： A temporary neck for a hip joint prosthesis comprising a mechanism that will allow the length of the temporary neck to be varied while in place, during implant surgery and after the stem and base of a permanent prosthesis have been positioned. In one best mode the variation in length is driven by rotating a pinion gear that engages a rack gear connected to the interior of the side walls of a moveable unit, and the ball is connected by a stud to the front wall of the moveable unit; thus the ball moves the same distance as the moveable unit, and that distance is a direct function of gear tooth spacing and number of rotations of the gear. In an alternative mechanism, a threaded drive axle (worm gear) moves in response rotation an adjustment base (wheel gear) in which the base comprises a drive disk with a female, threaded bore. The axle is secured to the pressure disk at one end and free at the other. The position of the drive disk (hence bore) is static; thus as the drive disk rotates and the threads are engaged, the pressure disk moves and the ball moves with it. Both devices include visual references to determine precisely the distance that has been traveled (generally in mm).

摘要翻译： 用于髋关节假体的临时颈部包括一种机构，该机构将允许临时颈部的长度在植入手术期间以及在永久性假体的茎和基部之后在适当位置进行变化。 在一个最佳模式中，长度的变化通过旋转小齿轮来驱动，该小齿轮啮合连接到可移动单元的侧壁内部的齿条，并且球通过螺柱连接到可移动单元的前壁; 因此球移动与可移动单元相同的距离，并且该距离是齿轮齿间距和齿轮转数的直接函数。 在替代机构中，螺纹驱动轴（蜗轮）响应于旋转调节基座（轮齿轮）移动，其中基座包括具有阴螺纹孔的驱动盘。 轴在一端固定在压力盘上，另一端固定在另一端。 驱动盘（因此孔）的位置是静态的; 因此当驱动盘旋转并且螺纹接合时，压盘移动并且球随之移动。 两个设备都包括视觉参考，以准确地确定已经行驶的距离（通常以mm为单位）。