| 摘要 |
Device for producing a structure which can be implanted in at least one part of the spinal column of a subject suffering from scoliosis in order to stabilise and/or correct said condition, comprises a first rod-shaped member (1) provided with a portion (2) having a thread (3) which starts from one end (4) and extends along the longitudinal axis (X-X) of the member, towards the opposite end (5), a head (6) formed in said opposite end, said head (6) being provided with a through-opening (7) extending along an axis transverse to the longitudinal axis (X-X) of said rod-shaped member (1), a second rod-shaped member (18) positioned in the opening (7) in the head (6) of the first rod-shaped member (1), fixing means (9, 10, 12) for locking said second rod-shaped member (18) relative to the head (6) with a first segment (30) protruding, with its free end (21), from one side of said head (6) and a second segment (31) with its other free end (29) protruding from the opposite side of said head (6). The first segment (30) has a quadrilateral cross-section with two opposing sides (25, 26), one parallel to the other. The second segment (31) comprises a fork (20), the prongs of which (22, 23) have facing surfaces (27, 28), turned towards the recess (24) of the fork (20), one parallel to the other and flat, with a position parallel to the position of the planes to which the parallel opposing sides (25, 26) of the first segment (30) belong. The implantable structure comprises a plurality of devices arranged in series in which the first segment (30) of a device is positioned between the prongs (22, 23) of the fork (20) of the second segment (31) of the adjacent device.
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