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    Apparatus for, and method of, detecting dislocations and material wear in hip replacements
    22.
    发明授权
    Apparatus for, and method of, detecting dislocations and material wear in hip replacements 失效
    检测髋关节置换术中脱位和磨损的装置及方法

    公开(公告)号：US5935171A

    公开(公告)日：1999-08-10

    申请号：US971706

    申请日：1997-11-17

    Applicant: John E. Schneider ,  Richard H. Walker ,  Elwood G. Norris

    Inventor： John E. Schneider ,  Richard H. Walker ,  Elwood G. Norris

    IPC: A61B5/06 ,  A61B5/11 ,  A61F2/00 ,  A61F2/32 ,  A61F2/34 ,  A61F2/36 ,  A61F2/46 ,  A61F2/48 ,  A61F2/30 ,  A61F2/76

    CPC classification number: A61B5/4528 ,  A61B5/06 ,  A61B5/1126 ,  A61F2/32 ,  A61F2/36 ,  A61F2/3662 ,  A61F2/468 ,  A61F2002/30448 ,  A61F2002/30698 ,  A61F2002/3233 ,  A61F2002/3493 ,  A61F2002/3611 ,  A61F2002/3625 ,  A61F2002/4631 ,  A61F2002/48 ,  A61F2002/488 ,  A61F2220/005 ,  A61F2250/008 ,  A61F2310/00011 ,  A61F2310/00023 ,  A61F2310/00029 ,  A61F2310/00179

    Abstract: In a total hip replacement, a stem of a femoral component is disposed in a patient's thigh bone with a ball extending in such femoral component above the stem. The ball is disposed in a hemispherical cup positioned in the patient's pelvis and enveloping the ball for frontal movement of the ball relative to the cup. A low-friction liner (e.g., plastic or ceramic) is disposed at the bottom of the cup. To determine whether the ball is properly positioned in the cup, a first member (e.g., a coil) is disposed on the bottom of the liner. A second member (e.g., a patch defining a loop) is disposed on the patient's thigh in operatively coupled (e.g. magnetic) relationship to the first member. The operative coupling between the members is variable in accordance with variations in the disposition of the ball in the cup. When the first and second members are respectively a coil and a patch, the coil and a capacitance may be fixed in the patient's body in a circuit resonant at a particular frequency. The patch may be included in electrical circuity disposed externally on the patient's body and energizable by a source (e.g., a battery) disposed externally on the patient's body. This circuity may be resonant at a frequency variable in accordance with variations in the magnetic coupling between the coil and the patch. A sensory indication may be provided when the resonant frequency of the circuity varies outside of particular limits. This indicates that the hip replacement may not be functioning properly in regard to subluxation, dislocation, or excessive material wear.

    Abstract translation: 在全髋关节置换中，将股骨部件的茎部设置在患者的大腿骨中，并且在杆上方的股骨部件中延伸有球。 球设置在位于患者骨盆中的半球形杯中，并且包围球以使球相对于杯的正面运动。 低摩擦衬垫（例如，塑料或陶瓷）设置在杯的底部。 为了确定球是否适当地定位在杯中，第一构件（例如，线圈）设置在衬套的底部上。 与第一构件可操作地耦合（例如磁性）的关系，将第二构件（例如，限定环的修补件）设置在患者的大腿上。 根据杯中的球的配置的变化，构件之间的操作联接是可变的。 当第一和第二构件分别是线圈和贴片时，线圈和电容可以以特定频率谐振的电路固定在患者身体中。 补片可以被包括在设置在患者身体外部的电气电路中，并且可由设置在患者身体外部的源（例如，电池）激励。 该电路可以根据线圈和贴片之间的磁耦合的变化在可变频率下谐振。 当电路的谐振频率在特定极限之外变化时，可以提供感觉指示。 这表明髋关节置换可能在半脱位，脱位或过多的材料磨损方面不能正常工作。

    Bipolar acetabular cup
    24.
    发明授权
    Bipolar acetabular cup 失效
    双极髋臼杯

    公开(公告)号：US5824108A

    公开(公告)日：1998-10-20

    申请号：US824778

    申请日：1997-03-26

    Applicant: Randall J. Huebner

    Inventor： Randall J. Huebner

    IPC: A61F2/34 ,  A61F2/00 ,  A61F2/32 ,  A61F2/36 ,  A61F2/46 ,  F16C11/06

    CPC classification number: F16C11/069 ,  A61F2/32 ,  A61F2002/30332 ,  A61F2002/30354 ,  A61F2002/30378 ,  A61F2002/30489 ,  A61F2002/305 ,  A61F2002/3208 ,  A61F2002/3241 ,  A61F2002/325 ,  A61F2002/3283 ,  A61F2002/3493 ,  A61F2002/3611 ,  A61F2002/4641 ,  A61F2220/0025 ,  A61F2220/0033 ,  A61F2310/00017 ,  A61F2310/00023

    Abstract: An acetabular cup assembly for use with a femoral implant. The cup assembly includes an outer shell, a bearing liner configured to fit into a cavity in the shell, a generally annular retaining ring and a locking ring configured to hold the retaining ring in the shell adjacent the bearing liner. The locking ring is slidable between locked and free configurations, with at least part of the locking ring being formed as a closed loop to prevent radial contraction of the locking ring inner surface as the locking ring is slid between the free and locked configurations. At least one small circumferential rib is formed on the outer surface of the locking ring to engage a corresponding circumferential groove in the shell when the locking ring is installed therein in the locked configuration.

    Abstract translation: 用于股骨植入物的髋臼杯组件。 杯组件包括外壳，构造成装配到壳体中的空腔中的轴承衬套，大致环形的保持环和锁定环，该锁定环构造成将保持环保持在邻近轴承衬套的壳体中。 锁定环可在锁定和自由构型之间滑动，其中锁定环的至少一部分形成为闭环，以防止当锁定环在自由和锁定构型之间滑动时锁定环内表面的径向收缩。 当锁定环安装在锁定构型中时，至少一个小圆周肋形成在锁定环的外表面上以与外壳中的对应的周向凹槽接合。

    Cold flow control
    25.
    发明授权
    Cold flow control 失效
    冷流控制

    公开(公告)号：US5746963A

    公开(公告)日：1998-05-05

    申请号：US699043

    申请日：1996-06-06

    Applicant: John Moss Hogg

    Inventor： John Moss Hogg

    IPC: A61F2/00 ,  A61F2/30 ,  A61F2/34 ,  B60B27/00 ,  F16C35/063 ,  B29C45/57

    CPC classification number: F16C35/063 ,  A61F2/30756 ,  B60B27/0005 ,  A61F2/30965 ,  A61F2002/30485 ,  A61F2002/30649 ,  A61F2002/30934 ,  A61F2002/3493 ,  A61F2220/0025 ,  A61F2310/00023 ,  A61F2310/00029 ,  Y10S623/923

    Abstract: This is basically an Engineering design of a means to control the stability and or resistivity of certain materials subject to Cold Flow without materially decreasing the material's normal function. This does not require additional thickness and/or hardening which may increase the resistance of the material. This method overcomes these limitations. This is accomplished by my development of a system of encapsulation, adding certain types of fibers, or both as may be required. The subject material using this method can then be processed to meet specific pressures and resistivity. There are many uses for this method, for example this method can be used for constructing the cartilage for an artificial joint where it is desired to have a predetermined force for separation and yet have low resistivity to normal motion. Another example is to apply this method to plastic bearings and bushings in order to reduce cold flow with little or no change in resistivity.

    Abstract translation: 这基本上是一种工程设计，用于控制受冷流量影响的某些材料的稳定性和/或电阻率，而不会大大降低材料的正常功能。 这不需要额外的厚度和/或硬化，这可能增加材料的阻力。 这种方法克服了这些限制。 这是通过我开发的封装系统，添加某些类型的光纤或者可能需要的两者来实现的。 然后可以处理使用该方法的主题材料以满足特定的压力和电阻率。 该方法有许多用途，例如该方法可用于构造用于人造关节的软骨，其中希望具有用于分离的预定力并且对正常运动具有低电阻率。 另一个例子是将此方法应用于塑料轴承和衬套，以便减少电阻率很小或没有变化的冷流。

    Acetabular cup assembly
    26.
    发明授权
    Acetabular cup assembly 失效
    髋臼杯组装

    公开(公告)号：US5725587A

    公开(公告)日：1998-03-10

    申请号：US572459

    申请日：1995-12-14

    Applicant: Frank D. Garber

    Inventor： Frank D. Garber

    IPC: A61F2/00 ,  A61F2/30 ,  A61F2/32 ,  A61F2/34 ,  A61F2/46

    CPC classification number: A61F2/4637 ,  A61F2/34 ,  A61F2/30767 ,  A61F2002/30378 ,  A61F2002/3082 ,  A61F2002/325 ,  A61F2002/3258 ,  A61F2002/3291 ,  A61F2002/3401 ,  A61F2002/3443 ,  A61F2002/3493 ,  A61F2220/0033

    Abstract: An acetabular cup assembly 10 that uses the mating contour of its bearing component 20 and its shell component 30 to provide a reliable interlocking engagement to secure the bearing component to the shell component is disclosed. Bearing component 20 includes end surface 24 and a convex spherical surface 22, which extends beyond its lateral diametrical plane 23, making the shape of the bearing component slightly greater than a hemisphere. Shell component 30 includes a concave inner surface 36 defining an open cavity 37 for receiving bearing component 20. Concave shell surface 36 has a diametrical recess 40, and surface 36 is complimentary and approximately the same in contour and radial dimension to convex bearing surface 22. Concave shell surface 36 includes an annular portion 38, which extends beyond its lateral diametrical plane 39. Consequently, bearing component 30 can not be inserted directly into the shell cavity, because its lateral diameter is greater than the diameter at the mouth of the shell cavity. Recess 40 in concave shell surface 36 allows bearing component 20 to be inserted into shell cavity 37 in a sideways position. Once inserted in shell cavity 37 in a sideways position, bearing component 20 can be rotated back 90.degree. within the shell cavity so that convex bearing surface 22 is seated concentrically over concave shell surface 36. In this rotated position, annular portion 38 of concave shell surface 36 converges partially over bearing component 20 to secure the bearing component within shell cavity 37.

    Abstract translation: 公开了一种髋臼杯组件10，其使用其轴承部件20及其壳部件30的配合轮廓来提供可靠的联锁接合以将轴承部件固定到壳部件。 轴承部件20包括端面24和凸出的球面22，其延伸超出其横向直径平面23，使得轴承部件的形状稍微大于半球。 壳体部件30包括限定用于接收轴承部件20的开口腔37的凹内表面36.凹面壳表面36具有直径凹部40，并且表面36在轮廓和径向尺寸上互补且与凸形支承表面22大致相同。 凹面壳36包括环形部分38，该环形部分38延伸超过其侧向直径平面39.因此，轴承部件30不能直接插入到壳体腔中，因为它的侧向直径大于壳体腔口处的直径 。 凹形壳体表面36中的凹部40允许轴承部件20以侧向位置插入壳体腔37中。 一旦在侧壁位置插入壳体腔37中，轴承部件20可以在壳体腔内旋转90度，使凸起的支承表面22同心地坐落在凹形壳体表面36上。在该旋转位置，凹形壳体的环形部分38 表面36部分地在轴承部件20上收敛，以将轴承部件固定在壳体腔37内。

    Bipolar endoprosthesis
    27.
    发明授权
    Bipolar endoprosthesis 失效
    双极内假体

    公开(公告)号：US5263988A

    公开(公告)日：1993-11-23

    申请号：US997658

    申请日：1992-12-29

    Applicant: Randall Huebner

    Inventor： Randall Huebner

    IPC: A61F2/00 ,  A61F2/30 ,  A61F2/32 ,  A61F2/34 ,  A61F2/36 ,  A61F2/46

    CPC classification number: A61F2/32 ,  A61F2/30724 ,  A61F2/34 ,  A61F2/36 ,  A61F2002/30377 ,  A61F2002/30487 ,  A61F2002/305 ,  A61F2002/30596 ,  A61F2002/30604 ,  A61F2002/3208 ,  A61F2002/3233 ,  A61F2002/3241 ,  A61F2002/3411 ,  A61F2002/3435 ,  A61F2002/3493 ,  A61F2002/3631 ,  A61F2002/4642 ,  A61F2220/0025 ,  A61F2220/0033 ,  A61F2310/00029 ,  A61F2310/00179

    Abstract: A bipolar endoprosthesis assembly which provides for a wide-range of motion between a bone and a socket (e.g., a femur and an acetabular socket), comprising a metal outer shell element, a ultra-high molecular weight, low-friction insert formed to fit within the shell element, and a locking ring designed to lock the assembly together with a femoral head prosthesis. The outer shell has a generally spherical shape on its outer surface to be received by a human socket such as the acetabulum. The inner surface of the outer shell is faceted to inhibit rotation of a correspondingly shaped inner insert. The insert has an outside surface shaped to mate with the inside surface of the outer shell element. The locking ring is slotted to facilitate insertion of a femoral head prosthesis. The locking ring also has dual sets of locking barbs shaped to mate with recesses on the inner surface of the outer shell element. The redundant locking mechanism of the locking ring inhibits accidental in vivo disassembly of the device yet allows for relatively easy intraoperative disassembly without specialty tools or fixtures.

    Abstract translation: 一种提供骨与插座（例如，股骨和髋臼插座）之间的宽范围运动的双极内假体装置，包括金属外壳元件，超高分子量低摩擦插入件，其形成为 装配在外壳元件内，以及锁定环，其设计成将组件与股骨头假体锁定在一起。 外壳在其外表面上具有大致球形的形状，以被诸如髋臼之类的人体插座接收。 外壳的内表面是刻面的，以防止相应形状的内插件旋转。 插入件具有成形为与外壳元件的内表面配合的外表面。 锁定环开槽以便于股骨头假体的插入。 锁定环还具有双组锁定倒钩，其形状与外壳元件的内表面上的凹槽配合。 锁定环的冗余锁定机构禁止装置的意外的体内拆卸，但允许相对容易的术中拆卸，而不需要特殊工具或固定装置。

    Joint prosthesis
    28.
    发明授权
    Joint prosthesis 失效
    联合PROSTHESIS

    公开(公告)号：US5133763A

    公开(公告)日：1992-07-28

    申请号：US449953

    申请日：1989-12-27

    Applicant: Jan B. Mullers

    Inventor： Jan B. Mullers

    IPC: A61F2/00 ,  A61F2/30 ,  A61F2/32 ,  A61F2/34

    CPC classification number: A61F2/32 ,  A61F2/34 ,  A61F2002/30433 ,  A61F2002/30487 ,  A61F2002/30495 ,  A61F2002/305 ,  A61F2002/30604 ,  A61F2002/3096 ,  A61F2002/3233 ,  A61F2002/3241 ,  A61F2002/3411 ,  A61F2002/3443 ,  A61F2002/3493 ,  A61F2220/0025 ,  A61F2220/0041

    Abstract: A joint prosthesis and a joint prosthesis organ comprising a cup-shaped element having two parts. One part (1) is a ring which may be connected to the cup-shaped second part (2) with use of click-joint elements (2',2") which are such that ring and cup-shaped part are allowed to rotate freely relative to each other. Described is that said ring may be formed such as to hamper luxation; the ring therefore may partially have an enlarged height. The surgeon using a joint prosthesis according to the invention on a patient has the possibility to rotate the ring with respect to the cup-shaped part until an optimal position is reached. If necessary the two parts may then be fixed to each other using separate means for fixation.

    Abstract translation: PCT No.PCT / NL88 / 00016 Sec。 371日期1989年12月27日第 102（e）日期1989年12月27日PCT提交1988年4月13日PCT公布。 出版物WO88 / 07845 日期：1988年10月20日。一种关节假体和关节假体器官，其包括具有两部分的杯形元件。 一个部分（1）是可以使用点状接头元件（2'，2“）连接到杯形第二部分（2）的环，使得环和杯形部分被允许 相对于彼此自由旋转。 描述的是所述环可以形成为妨碍偏心; 因此，环可以部分地具有增大的高度。 在患者身上使用根据本发明的关节假体的外科医生有可能相对于杯形部分旋转环直到达到最佳位置。 如果需要，可以使用分离的固定装置彼此固定两个部分。

    Artificial hip joint socket with hydraulic head support
    30.
    发明授权
    Artificial hip joint socket with hydraulic head support 失效
    人造髋关节插座，带液压头支架

    公开(公告)号：US4840631A

    公开(公告)日：1989-06-20

    申请号：US162249

    申请日：1988-02-29

    Applicant: Robert Mathys

    Inventor： Robert Mathys

    IPC: A61F2/30 ,  A61F2/32 ,  A61F2/34 ,  A61F2/36

    CPC classification number: A61F2/34 ,  A61F2/32 ,  A61F2002/30589 ,  A61F2002/30673 ,  A61F2002/30795 ,  A61F2002/30934 ,  A61F2002/30937 ,  A61F2002/3225 ,  A61F2002/3493 ,  A61F2002/3611

    Abstract: A liquid chamber (3) arranged in the bottom of the socket cavity (2) is latitudinally sealed by the engaging ball head (4) of the femoral prosthesis shaft. The ball head (4) of the hip joint prosthesis is supported hydrostatically by the liquid chamber (3) filled with synovia and sealed by the ball head following a deformation of the elastic sealing edge (5). By means of the hydrostatic support, the friction moment increases only a little when the load becomes higher and approaches a constant value which is considerably lower than in conventional hip joint sockets.

    Abstract translation: 布置在插座空腔（2）的底部的液体室（3）由股骨假体轴的接合球头（4）纬度地密封。 髋关节假体的球头（4）由填充有滑膜的液体室（3）静水支撑，并随着弹性密封边缘（5）的变形而被球头密封。 通过静液压支架，当负载变高时，摩擦力矩仅增加一点，接近一个明显低于传统髋关节插座的常数值。

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