System and method for stabilizing pedicle screw of vertebral vertebrae

Abstract

Disclosed herein are embodiments of systems and methods for stabilizing a spinal vertebra through a skin incision. In some embodiments, the system or method may include a first screw having a first screw head, a second screw having a second screw head, a third screw having a third screw head, a first tower having a distal portion, a proximal portion, and a bend between the distal portion and the proximal portion, a second tower having a distal portion and a proximal portion, the second tower configured to be removably coupled to the second screw at a distal end of the second tower, and a third tower having a distal portion, a proximal portion, and a bend between the distal portion and the proximal portion.

Claims

1. A system for stabilizing the vertebrae through a skin incision, wherein the system is A first screw having a first screw head, A second screw having a second screw head, A third screw having a third screw head, A first tower having a distal portion, a proximal portion, and a bent portion between the distal portion and the proximal portion, wherein the first tower is configured to be removably coupled to a first screw at the distal end of the first tower, A second tower having a distal portion and a proximal portion, wherein the second tower is configured to be removably coupled to the second screw at the distal end of the second tower, A third tower having a distal portion, a proximal portion, and a bent portion between the distal portion and the proximal portion, wherein the third tower is configured to be removably coupled to the third screw at the distal end of the third tower, Equipped with, The first tower is configured to be removably connected to the first screw such that, when the first tower is connected to the first screw, the axial centerline of the distal portion of the first tower is substantially coaxial with the axial centerline of the first screw. The second tower is configured to be removably coupled to the second screw such that, when the second tower is coupled to the second screw, the axial centerline of the distal portion of the second tower is substantially coaxial with the axial centerline of the second screw. The third tower is configured to be removably connected to the third screw such that, when the third tower is connected to the third screw, the axial centerline of the distal portion of the third tower is substantially coaxial with the axial centerline of the third screw. The proximal portion of the first tower extends at a non-zero acute angle away from the axial centerline of the distal portion of the first tower. The proximal portion of the third tower extends at a non-zero acute angle away from the axial centerline of the distal portion of the third tower. In the operational state of the system, the first tower, the second tower, and the third tower are configured to intersect each other, and the operational state is such that the first tower is connected to a first screw embedded in a first vertebra, the second tower is connected to a second screw embedded in a second vertebra, and the third tower is connected to a third screw embedded in a third vertebra.

2. The system according to claim 1, wherein in the operational state, the first tower, the second tower, and the third tower are configured to intersect at or adjacent to the patient's skin level.

3. The system according to claim 1, wherein in the operational state, the first tower, the second tower, and the third tower are configured to intersect while embedded at or adjacent to the patient's skin level, the distance from the skin level to the nearest end of the distal portion of the first tower is 10% or less of the length of the distal portion of the first tower, and the distance from the skin level to the nearest end of the distal portion of the third tower is 10% or less of the length of the distal portion of the third tower.

4. The system according to claim 1, wherein the first tower has an opening therein that is completely enclosed, and the opening is sized and configured to receive the second tower and the third tower in such a way that, in the operational state, a portion of the outer wall of the first tower surrounds the outer surfaces of a portion of the second tower and the third tower.

5. The system according to claim 1, wherein the proximal portion of the first tower is configured such that, in the operational state, the proximal portion of the first tower also extends at a non-zero acute angle away from the axial centerline of the proximal portion of the second tower such that the proximal portion of the first tower forms an acute angle with respect to the proximal portion of the second tower, and the proximal portion of the third tower is configured such that, in the operational state, the proximal portion of the third tower also extends at a non-zero acute angle away from the axial centerline of the proximal portion of the second tower such that the proximal portion of the third tower forms an acute angle with respect to the proximal portion of the second tower.

6. The system according to claim 1, wherein the distal portion of the first tower is configured such that, in the operational state, the distal portion of the first tower extends at a non-zero acute angle away from the axial centerline of the distal portion of the second tower such that the distal portion of the first tower forms an acute angle with respect to the distal portion of the second tower, and the distal portion of the third tower is configured such that, in the operational state, the distal portion of the third tower extends at a non-zero acute angle away from the axial centerline of the distal portion of the second tower such that the distal portion of the third tower forms an acute angle with respect to the distal portion of the second tower.

7. The system according to claim 1, wherein the first tower is sized and configured such that, when embedded, the proximal portion of the first tower extends away from the skin incision in a first direction, and the proximal portion of the third tower also extends away from the skin incision in the first direction.

8. The system according to claim 1, wherein in the operable state, the proximal portion of the third tower is positioned between the proximal portion of the first tower and the proximal portion of the second tower.

9. The system according to claim 1, wherein the proximal portion of the first tower is configured to be gripped by the surgeon so that the surgeon can apply the reverse torque force to the first tower around at least the axial centerline of the distal portion of the first tower, the reverse torque force stabilizes the first screw head.

10. The system according to claim 1, wherein in the operable state, the system is configured such that moving the proximal portion of the first tower toward the proximal portion of the third tower generates a compressive force on at least the first vertebra in which the first screw is embedded relative to the third vertebra in which the third screw is embedded.

11. The system according to claim 1, wherein the system is configured such that the first screw, the second screw, and the third screw are embedded through the same skin incision.

12. The system according to claim 1, wherein the first tower has a pair of hooks configured to receive a pair of wires used during an implantation procedure, the hooks are configured to provide a surface on which the third tower can rotate.

13. The system according to claim 1, wherein the distal portion of the first tower is open along one side of the first tower and is not completely enclosed, and / or the distal portion of the third tower is open along one side of the third tower and is not completely enclosed.

14. The system according to claim 1, wherein at least the distal portion of the first tower and the distal portion of the third tower have an adjustable length.

15. The system according to claim 1, wherein the proximal portion of the first tower and the proximal portion of the third tower have a planar shape configured to be compatible with grippers, coupling mechanisms, and other components of a surgical robot system.

16. The system according to claim 1, further comprising a rigid connecting element, a first receiving element coupled to the first screw head, a second receiving element coupled to the second screw head, and a third receiving element coupled to the third screw head, wherein the first receiving element, the second receiving element, and the third receiving element are configured to operably receive the connecting element, and the connecting element extends between the first receiving element, the second receiving element, and the third receiving element when the first screw, the second screw, and the third screw are embedded in the first vertebra, the second vertebra, and the third vertebra, respectively.

17. A system for stabilizing the vertebrae through a skin incision, wherein the system is A first screw having a first screw head, A second screw having a second screw head, A third screw having a third screw head, A first tower having a distal portion and a proximal portion, wherein the first tower is configured to be removably coupled to a first screw at the distal end of the first tower, A second tower having a distal portion and a proximal portion, wherein the second tower is configured to be removably coupled to the second screw at the distal end of the second tower, A third tower having a distal portion and a proximal portion, wherein the third tower is configured to be removably coupled to a third screw at the distal end of the third tower, Equipped with, The first tower is configured to be removably connected to the first screw such that, when the first tower is connected to the first screw, the axial centerline of the distal portion of the first tower is substantially coaxial with the axial centerline of the first screw. The second tower is configured to be removably coupled to the second screw such that, when the second tower is coupled to the second screw, the axial centerline of the distal portion of the second tower is substantially coaxial with the axial centerline of the second screw. The third tower is configured to be removably connected to the third screw such that, when the third tower is connected to the third screw, the axial centerline of the distal portion of the third tower is substantially coaxial with the axial centerline of the third screw. The proximal portion of the first tower extends at a non-zero acute angle away from the axial centerline of the distal portion of the first tower. The proximal portion of the third tower extends at a non-zero acute angle away from the axial centerline of the distal portion of the third tower. In the operational state of the system, the proximal portion of the first tower extends away from the second tower in a first direction, and the operational state is such that the first tower is connected to a first screw embedded in a first vertebra, the second tower is connected to a second screw embedded in a second vertebra, and the third tower is connected to a third screw embedded in a third vertebra. In the operational state, the proximal portion of the third tower also extends away from the second tower in the first direction, the system.

Images