Screw tower and rod reduction tool
AssigneeGlobus Medical, Inc.
InventorsMatthew Bechtel, Caelan Allen, Neil R. Crawford, Thomas Calloway, Steven Chang, Norbert Johnson, Jeffrey Forsyth
Life of this patent
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Abstract
A system includes a screw tower, an instrument, and a housing. The instrument includes a driver shaft extendable longitudinally through the screw tower, and a threaded sleeve mounted on a proximal portion of the driver shaft. The housing includes one or more retention members coupleable to the screw tower, and a threaded button threadably coupleable to the threaded sleeve. The threaded sleeve is rotatable about a longitudinal axis to urge the driver shaft longitudinally relative to the screw tower.
Claims17
A rod reduction system for use with a tracking system comprising:
- a screw tower having:
- an outer sleeve having distal ends adapted to mate to an exterior feature of a tulip of a bone screw, the outer sleeve further having extensions extending radially inwardly;
- and
- an inner sleeve configured to be slidably coupled to the outer sleeve and configured to secure the bone screw to the outer sleeve, the inner sleeve having longitudinal slots for receiving the extensions of the outer sleeve to prevent rotation of the inner sleeve relative to the outer sleeve;
- a driver having a shaft extendable longitudinally through the screw tower, the shaft having a threaded sleeve disposed around a proximal portion of the shaft;
- and
- a housing configured to attach to the screw tower and holding a threaded insert configured to threadably couple to the threaded sleeve of the shaft, wherein the threaded sleeve is rotatable about a longitudinal axis to urge the driver shaft longitudinally relative to the screw tower to reduce a rod disposed in the tulip,
- a tracking system for use with a robot including:
- a computer, a display in communication with the computer;
- a position sensor in communication with the computer;
- one or more tracking markers disposed on the screw tower;
- wherein the position sensor is configured to detect the one or more tracking markers to determine position sensor data of the one or more tracking markers;
- wherein the computer is configured to receive the position sensor data and present the position of the screw tower via the display in relation to an image of an anatomical structure of a patient.
A rod reduction system for use with a tracking system comprising:
- a computer;
- a screw tower configured to be positioned at a first location on a patient during the surgical procedure;
- a position sensor in electronic communication with the computer;
- one or more tracking markers positioned on the screw tower;
- wherein the screw tower includes:
- an outer sleeve having distal ends adapted to mate to an exterior feature of a tulip of a bone screw, the outer sleeve further having extensions extending radially inwardly;
- and
- an inner sleeve configured to be slidably coupled to the outer sleeve and having a pair of mating extensions configured to be positioned inside the tulip to sandwich the tulip between the outer sleeve and the inner sleeve, thereby locking the bone screw to the outer sleeve, the inner sleeve having longitudinal slots for receiving the extensions of the outer sleeve to prevent rotation of the inner sleeve relative to the outer sleeve;
- a driver having a shaft extendable longitudinally through the screw tower, the shaft having a threaded sleeve disposed around a proximal portion of the shaft;
- and
- a housing configured to attach to the screw tower and holding a threaded insert configured to threadably couple to the threaded sleeve of the shaft, wherein the threaded sleeve is rotatable about a longitudinal axis to urge the driver shaft longitudinally relative to the screw tower to reduce a rod disposed in the tulip,
- wherein the position sensor is configured to detect the one or more first tracking markers to determine position sensor data of the one or more first tracking markers and provide the position sensor data to the computer.
Dependencies are inferred from the claim text.