Minimally invasive counter-torque wrench system
View Patent ↗A minimally invasive counter-torque system may comprise a bone screw system, a counter-torque wrench, a set screw driver, a counter-torque wrench handle, and a removable set screw driver handle. A body of the counter-torque wrench may be positioned entirely within a space as defined by or between removable arms of a tulip head of the bone screw system, such that only the wings of the counter-torque wrench extend beyond a width of the bone screw system. In operation, the counter-torque wrench handle may be received on a proximal end of the counter-torque wrench and may be used to stabilize and prevent rotation of the counter-torque wrench and the bone screw system. Then, the removable set screw drive handle may be engaged to a proximal end of the set screw driver and may be used to fasten a set screw into the saddle of the bone screw system.
1. A counter-torque wrench system operable for connecting to a bone screw system including a tulip head with at least one removable arm and a saddle, and a mounting rod with a curvature, the counter-torque wrench system comprising:
a counter-torque wrench comprising:
a proximal end;
a distal end;
a body;
at least one wing comprising a curved surface at a distal end of the at least one wing, wherein the at least one wing is disposed at the distal end of the counter-torque wrench, and wherein an outer surface of the at least one wing is substantially within an outer circumference of the saddle; and
a hollow channel extending from the proximal end of the counter-torque wrench to the distal end of the counter-torque wrench; and
a set screw driver comprising:
a proximal end; and
a distal end, wherein the distal end of the set screw driver comprises an engaging member;
wherein the body of the counter-torque wrench is operable to be received within the at least one removable arm of the tulip head of the bone screw system;
wherein the curved surface of each of the at least one wing is operable to contour against the curvature of the mounting rod when the counter-torque wrench reduces the mounting rod into the saddle, and
wherein the set screw driver is operable to be received within the hollow channel of the counter-torque wrench.
2. The counter-torque wrench system according to claim 1 , wherein the proximal end of the counter-torque wrench comprises an annular protrusion; and wherein the annular protrusion comprises at least one slot disposed at a distal end of the annular protrusion; and wherein the at least one slot is operable to receive at least a distal portion of a removable arm of the tulip head.
3. The counter-torque wrench system according to claim 1 , wherein the proximal end of the counter-torque wrench is operable to removably engage with a counter-torque wrench handle.
4. The counter-torque wrench system according to claim 1 , wherein the counter-torque wrench comprises two wings.
5. The counter-torque wrench system according to claim 1 , wherein the at least one wing is disposed outside the tulip head of the bone screw system.
6. The counter-torque wrench system according to claim 1 , wherein the body comprises a plurality of indentations disposed along an axis as defined from the proximal end of the counter-torque wrench to the distal end of the counter-torque wrench.
7. The counter-torque wrench system according to claim 6 , wherein the plurality of indentations are operable to engage with a compression tool.
8. The counter-torque wrench system according to claim 1 , wherein the set screw driver is operable to rotate within the hollow channel of the counter-torque wrench.
9. The counter-torque wrench system according to claim 1 , wherein the engaging member is operable to mate with a set screw and to secure the set screw within the bone screw system.
10. The counter-torque wrench system according to claim 1 , wherein the proximal end of the set screw driver is operable to engage with a T-handle.