发明名称 |
BONE SCREW RETAINING SYSTEM |
摘要 |
A spinal implant has a bone plate with a bone contacting surface and an opposite upwardly facing surface and at least one opening with a groove formed around an inner circumference of the opening. The groove has an axially spaced upper and lower surface. A bone-anchor or bone screw is capable of being accommodated in the opening between the groove and the bone contacting surface. A split-ring is mounted in the groove. The split-ring is sized to expand upon insertion of the anchor element into the opening and to come into direct contact with a head of the bone anchor to hold the bone anchor in the opening. The split-ring has an upper surface and a lower surface for respectively engaging the upper and lower surface of said groove, wherein the split-ring has a variable width so as to optimize its flexibility.
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申请公布号 |
US2013066379(A1) |
申请公布日期 |
2013.03.14 |
申请号 |
US201213623269 |
申请日期 |
2012.09.20 |
申请人 |
STRYKER SPINE;STRYKER SPINE |
发明人 |
CAMPBELL CHRISTOPHER M.;HARRINGTON TODD |
分类号 |
A61B17/58;A61B17/80;A61B17/70;A61B17/86;A61B17/88;A61B17/92;A61F2/00;A61F2/44 |
主分类号 |
A61B17/58 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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