Bone-anchoring element
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United States of America Patent
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-
Apr 23, 2002
Grant Date -
N/A
app pub date -
Jul 26, 1999
filing date -
Jan 21, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A rotationally symmetrical anchoring element made of biocompatible material for anchoring into bone tissue. A circumferential surface includes a lower portion adapted to be incorporated with bone tissue and an upper portion that is located outside the bone tissue following implantation. The upper portion is adapted for attachment of a spacer piece or prosthetic structure thereto. The upper portion includes an unthreaded conical portion having a diameter that increases with increasing distance away from an upper end gable surface of the element. The conical portion forms a bearing surface for cooperation with a conical surface of the spacer piece or the prosthetic structure. The conical surface matching the conical portion. An external thread provided at a top of the upper portion secures the conical surface of the spacer piece or the prosthetic structure against the conical portion.
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