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专利名称：Artificial intervertebral disc发明人：Lance M. Middleton申请号：US09620306申请日：20000720公开号：US06315797B1公开日：20011113
专利附图：
摘要：An intervertebral prosthesis dimensioned for insertion within an intervertebralspace between adjacent vertebrae to replace at least a portion of an intervertebral discremoved therefrom, includes a disc member having sufficient rigidity to support theadjacent vertebrae in spaced relation. The disc member defines a longitudinal axis and a
lateral axis transverse to the longitudinal axis. The disc member includes an exterior wallportion having a first slit with a longitudinal component of direction and a second slit witha lateral component of direction. The first and second slits are dimensioned to extendsufficiently within the exterior wall portion and are arranged relative to the longitudinalaxis whereby upon insertion of the disc member within the intervertebral space forcesexerted on the disc member are transferred along the exterior wall portion as facilitatedby the slit arrangement. Preferably, the first slit extends in a general longitudinaldirection and the second slit extends in a general lateral direction. The disc member mayinclude an interior cavity disposed within the exterior wall portion with the first andsecond slits extending through the exterior wall portion in communication with theinterior cavity.
申请人：SURGICAL DYNAMICS INC
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