Pedicle screws with inclined channels to hold support rods

Details Pedicle screws with inclined channels to hold support rods Pedicle screws with inclined channels to hold support rods

2007-12-04

2007-12-04

Ramana, Anuradha (Department: 3733)

Surgery

Instruments

Orthopedic instrumentation

Reexamination Certificate

active

10168135

ABSTRACT:
This invention is a pedicle screw (1), comprising a threaded rod (2) having a longitudinal axis (XX) and a head (4) in which there is a channel (5) adapted to receive a spinal support rod, and a means for blocking the rod; the channel is formed such that its longitudinal axial plane (P) is inclined relative to the longitudinal axis (XX) of the threaded rod. The head (4) of the screw being made up of two flanks (6, 7), a threaded hole (11) is formed in one of them; the inclination of the channel (5) relative to the axis of the treaded rod (2) makes it possible to place a tool for blocking the rod in the channel without this tool coming into contact with the muscle tissues delimiting the incision. Moreover, the threaded seat (11) permits the positioning of instruments without obstructing the channel for passage of the rod.

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