| 摘要 |
<p>A dual composition vertebral fixation device (10), for insertion between a pair of adjacent lumbar or thoracic vertebrae, includes a frame (12) comprised of a generally rigid first material for structural support strength and rapid fixation. The frame has an upper portion (16) and a lower portion (18). The upper and lower portions are partially convex, spaced from each other and joined together by distal and proximal supports (14,22). A housing is comprised of a second material for minimizing interference with imaging. The housing (38) has a convexly tapered distal end and two generally parallel side walls (40,42) spaced from each other and extending from the tapered distal end. The housing is coupled to the frame by cooperatively surrounding at least a portion of the frame and oriented such that the side walls are generally perpendicular to the upper and lower portions of the frame when assembled.
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