09-05-2023 дата публикации
Номер: CN116077159A
Принадлежит:
The invention relates to the field of medical instruments, in particular to a flexible screw-rod system for thoracolumbar segment spinal internal fixation, the flexible screw-rod system comprises a flexible screw, a connector, a rigid rod and a movement retainer, the flexible screw comprises a screw cap, a second locking block, a screw bead, a first locking block, a drill bit, a flexible steel wire and a fixing screw; the multiple nail beads are connected end to end in an embedded mode to form a flexible screw body, evenly-distributed channels are formed in the flexible screw body, the flexible steel wires penetrate through the channels, the tails of the flexible steel wires are fixedly connected with the first locking blocks, the heads of the flexible steel wires are inserted into the nail caps in a sliding mode, the drill bits are fixed to the right ends of the first locking blocks, and the second locking blocks are fixed to the right ends of the nail caps. The fixing screw is in threaded ...
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