公开(公告)号：US20080027559A1

公开(公告)日：2008-01-31

申请号：US11461319

申请日：2006-07-31

申请人： Roy Crowninshield ,  Douglas Wentz ,  Alex P. Stoller

发明人： Roy Crowninshield ,  Douglas Wentz ,  Alex P. Stoller

IPC分类号： A61F2/36 ,  A61B17/72

CPC分类号： A61F2/38 ,  A61B17/7208 ,  A61B17/7283 ,  A61F2/3662 ,  A61F2/3676 ,  A61F2002/30014 ,  A61F2002/30179 ,  A61F2002/30224 ,  A61F2002/30326 ,  A61F2002/30332 ,  A61F2002/30535 ,  A61F2002/30604 ,  A61F2002/3082 ,  A61F2002/30827 ,  A61F2002/30828 ,  A61F2002/30879 ,  A61F2002/365 ,  A61F2002/3652 ,  A61F2002/3654 ,  A61F2002/4011 ,  A61F2220/0033 ,  A61F2230/0058 ,  A61F2230/0069 ,  A61F2250/0018 ,  A61F2250/0037 ,  A61F2250/0058 ,  A61F2250/006 ,  A61F2310/00017 ,  A61F2310/00023 ,  A61F2310/00029

摘要： A variable stiffness stem component for intramedullary fixation in total joint replacement implants or in a segmental replacement system. The stem component has a shaft with a proximal end, a distal end, and a longitudinal length therebetween. The diameter of the shaft is approximately constant along the longitudinal length. A taper or threaded connection may be provided adjacent the proximal end of the shaft for assembly to another implant component. At least three flutes are disposed in a portion of the length of the shaft from intermediate the proximal and distal ends extending towards the distal end. The flutes increase in one of width or depth, or a combination thereof, towards the distal end to provide variable stiffness.

摘要翻译： 用于髓内固定在全关节置换植入物或节段置换系统中的可变刚度杆部件。 杆部件具有轴，其具有近端，远端和它们之间的纵向长度。 轴的直径沿纵向长度近似恒定。 可以在轴的近端附近提供锥形或螺纹连接，用于组装到另一植入部件。 至少三个凹槽设置在轴的长度的一部分中，从近端和远端的中间向远端延伸。 凹槽中的一个宽度或深度或其组合朝向远端增加以提供可变刚度。

公开(公告)号：US20060276906A1

公开(公告)日：2006-12-07

申请号：US11353392

申请日：2006-02-14

申请人： Stephen Hoag ,  Dale Degroff ,  Douglas Wentz ,  Leslie Gilbertson ,  Roy Crowninshield

发明人： Stephen Hoag ,  Dale Degroff ,  Douglas Wentz ,  Leslie Gilbertson ,  Roy Crowninshield

IPC分类号： A61F2/36

CPC分类号： A61F2/36 ,  A61F2/30767 ,  A61F2/30907 ,  A61F2002/30535 ,  A61F2250/0058

摘要： A prosthetic hip stem for use in a prosthetic hip joint. The hip stem generally includes a core having a stem portion and a neck portion, a polymer matrix layer substantially covering the stem portion of the core, and a porous metal layer substantially covering the polymer matrix layer. The polymer matrix layer connects the core and the porous metal layer, and may be injection molded therebetween. The neck portion of the hip stem has a relatively thin or slender profile which allows for an increased degree of articulating movement of the hip stem with respect to the acetabular component of a prosthetic hip joint. The neck portion of the hip stem additionally includes a version indicator element, such as a bump or a protrusion, which may be tactilely felt by a surgeon to aid the surgeon in positioning the hip stem during a minimally invasive total hip arthroplasty procedure, for example, where direct visualization of the hip stem by the surgeon may not be possible. Additionally, the core of the hip stem includes grooves, ridges, flats, dimples or other features to enhance the mechanical interconnection between the core and the polymer matrix layer.

摘要翻译： 用于假肢髋关节的假肢髋部。 臀部柄通常包括具有杆部和颈部的芯，基本覆盖芯的茎部的聚合物基质层和基本上覆盖聚合物基质层的多孔金属层。 聚合物基质层连接芯和多孔金属层，并且可以在其间进行注模。 臀部柄部的颈部具有相对较薄或细长的轮廓，其允许髋部柄相对于假肢髋关节的髋臼部件的更大程度的关节运动。 髋关节杆的颈部还包括版本指示器元件，例如凸起或凸起，其可由外科医生触觉地感觉以帮助外科医生在微创全髋关节置换手术期间定位髋骨柄，例如 由外科医生直接观察髋部骨骼可能是不可能的。 此外，臀部柄的芯包括凹槽，脊，平面，凹痕或其他特征，以增强芯和聚合物基质层之间的机械互连。