RETRACTION TUBE FOR USE WITH CAPLESS PEDICLE SCREW

摘要

A retractor system and method for locating and placing a polyaxial screw while substantially simultaneously retracting tissue is shown and described. The retractor has a channel that facilitates introducing a rod into the polyaxial screw. Various embodiments are shown, including one which utilized a reducer for moving the rod in the retractor.

主权项

1. A retractor/reducer assembly for use in combination with a reducer comprising:
a retractor comprising an elongated member for detachably mounting onto a polyaxial screw receiver having a rod-locking channel for receiving and locking onto a rod; said elongated member comprising a rod-receiving channel for receiving said rod and for guiding said rod into said rod-locking channel; said elongated member having a first end for receiving and detachably mounting onto said polyaxial screw receiver; and a reducer for rotatably mounting on said elongated member, at least a portion of said reducer extending over and at least partially surrounding said polyaxial screw receiver and having a generally helical channel for receiving said rod and for urging said rod to move in said rod-receiving channel of said retractor and into said rod-locking channel in response to rotation of said reducer while said screw is stationary.