发明名称 |
Trochlear implants and methods of use |
摘要 |
Implant devices, and method of using the same, are provided. The implant devices have an articular end and a stem, the stem having an oval-shaped cross-section. The articular end has an upper surface, a side surface, and a lower surface. The upper surface and lower surface each intersect the side surface. The upper surface has a first surface curvature, a central surface curvature, and a second surface curvature. The stem extends from the lower surface in a direction away from the upper surface of the articular end. |
申请公布号 |
US8852286(B2) |
申请公布日期 |
2014.10.07 |
申请号 |
US201012868112 |
申请日期 |
2010.08.25 |
申请人 |
Fellowship of Orthopaedic Researchers, Inc. |
发明人 |
Cook Stephen D.;Strzepa Peter;Bajaj Shoib |
分类号 |
A61F2/66;A61F2/30;A61F2/38 |
主分类号 |
A61F2/66 |
代理机构 |
Frommer Lawrence & Haug LLP |
代理人 |
Frommer Lawrence & Haug LLP ;Lieb Stephen J.;Garman Russell A. |
主权项 |
1. An implant comprising:
an articular end having an upper surface, a side surface, and a lower surface; the upper surface and lower surface each intersect the side surface, the upper surface has a first surface curvature, a central surface curvature, and a second surface curvature, wherein the central surface curvature is formed along a partial torus and has a saddle point; and a stem, which extends from the lower surface in a direction away from the upper surface of the articular end and has a central axis, wherein the location of the saddle point is offset along a horizontal direction from the location of the central axis by a distance ranging from between about 1 to about 5 millimeters, the stem having at least one groove about a perimeter of the stem,
the groove defined by a partial torus having a groove tubular radius ranging from about 0.25 millimeters to about 2 millimeters,the groove blending into the stem with a groove blend having an edge radius ranging from about 0.1 millimeters to about 1 millimeter,the groove extends continuously about the perimeter of the stem. |
地址 |
Metairie LA US |