Invention Grant
US08668720B2 Disc distraction device 有权
椎间盘牵引装置

Disc distraction device
Abstract:
A disc distraction device comprising a first pedicle screw having a mounting end and a head end, a second pedicle screw having a mounting end and a head end, a rigid interconnection member coupled proximate the head end of both the first and second pedicle screws, and a spring member coupled to the first and second pedicle screws closer to the mounting ends of the pedicle screws than the rigid interconnection member.
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