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US 2013/0158611 A1Published application
Retraction tube for use with capless pedicle screw
AssigneeX-spine Systems, Inc.
InventorDavid Louis Kirschman
Life of this patent
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Abstract
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.
Claims31
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.
2 more elements
A reducer comprising:
- an elongated tubular member having a generally helical reducer channel, said elongated tubular member being adapted and configured to mount onto a polyaxial screw receiver having a rod-locking channel, said generally helical reducer channel receiving a rod and causing said rod to move in said rod-locking channel said polyaxial screw receiver in response to a rotation of said elongated tubular 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 into said rod-locking channel in response to rotation of said reducer.
Dependencies are inferred from the claim text.