Adjustable drill guide
View Patent ↗An intervertebral disc space preparation guide comprises a first member and a second member. The first member includes a first spacer portion adapted for insertion in an intervertebral disc space and a first cutting block portion through which a first bore extends. The second member includes a second spacer portion adapted for insertion in an intervertebral disc space and a second cutting block portion through which a second bore extends. The first member is movably connected to the second member.
1. An intervertebral disc space preparation guide comprising:
a first member including
a body portion having:
a first spacer portion adapted for insertion in an intervertebral disc space, and
a first cutting block portion through which a first bore extends; and
an elongated handle permanently attached to the body portion to facilitate insertion of the body portion into a patient and removal of the body portion from the patient; and
a second member including
a second spacer portion adapted for insertion in an intervertebral disc space and
a second cutting block portion through which a second bore extends,
wherein the first member is movably connected to the second member;
wherein the first spacer portion is pivotally connected to the second spacer portion;
wherein the first spacer portion is pivotally connected to the second spacer portion by a ball and socket type joint;
wherein the ball and socket type joint includes a domed shaped protrusion extending from the first member and a domed shaped recess formed in the second member.
2. The guide of claim 1 further comprising a locking mechanism for preventing the domed shape protrusion from separating from the domed shape recess.
3. The guide of claim 1 wherein the domed shaped protrusion comprises at least one indention and the domed shape recess comprises at least one tab and wherein the at least one tab is insertable through the at least one indention and wherein the dome shaped protrusion is rotatable relative to the domed shape recess after insertion of the at least one tab through the at least one indention to lock the first member to the second member.
4. The guide of claim 1 wherein a third bore extends through the first cutting block portion and a fourth bore extends through the second cutting block portion.
5. The guide of claim 4 wherein the first bore is parallel to the third bore.
6. The guide of claim 1 wherein the first spacer portion comprises a recess extending from the first bore.
7. The guide of claim 1 wherein the intervertebral disc space comprises a lordotic angle between a first vertebral endplate and a second vertebral endplate and wherein the first and second spacer portions are adapted to contact the first and second vertebral endplates, respectively, at the lordotic angle.
8. The guide of claim 7 wherein the lordotic angle ranges between 0 and 10 degrees.
9. The guide of claim 1 wherein the first and second spacer portions have different thicknesses.
10. The guide of claim 1 wherein the first cutting block portion comprises a penetration limiting extension.
11. An intervertebral disc space preparation guide comprising:
a first member including
a body portion having:
a first spacer portion adapted for insertion in an intervertebral disc space, and
a first cutting block portion through which a first bore extends; and
an elongated handle permanently attached to the body portion to facilitate insertion of the body portion into a patient and removal of the body portion from the patient; and
a second member including
a second spacer portion adapted for insertion in an intervertebral disc space and
second cutting block portion through which a second bore extends,
wherein the first member is movably connected to the second member;
wherein a third bore extends through the first cutting block nonparallel to the first bore.
12. The guide of claim 11 wherein the first spacer portion is pivotally connected to the second spacer by a hinge joint.
13. The guide of claim 12 wherein the hinge joint includes a shaft formed on the first spacer portion and a J-shaped latch formed on the second spacer portion.
14. The guide of claim 11 wherein a coil spring extends between the first member and the second member.
15. The assembly of claim 11 wherein first vertebral endplate forms an angle with respect to the second vertebral endplate and wherein the first spacer portion is positionable against the first vertebral endplate and the second spacer portion is positionable against the second vertebral endplate.
16. The assembly of claim 15 wherein the angle is between 0 and 10 degrees.
17. The guide of claim 11 , wherein a fourth bore extends through the second cutting block nonparallel to the second bore.
18. The guide of claim 11 , wherein the second member includes an elongated handle permanently attached to at least a portion of the second cutting block.
19. The assembly of claim 11 , wherein the first spacer portion is pivotally connected to the second spacer portion by a domed shaped protrusion engaged with a domed shaped recess.
20. The assembly of claim 19 further comprising a mechanism for preventing the domed shape protrusion from separating from the domed shape recess.
21. The assembly of claim 20 wherein the domed shaped protrusion comprises at least one indention and the domed shape recess comprises at least one tab and wherein the at least one tab is insertable through the at least one indention and wherein the dome shaped protrusion is rotatable relative to the domed shape recess after insertion of the at least one tab through the at least one indention to prevent the domed shape protrusion from separating from the domed shape recess.
22. A surgical cutting guide, comprising:
a first member including:
a first body portion having:
a first spacer portion sized and shaped for insertion at least partially into an intervertebral disc space between a first vertebra and a second vertebra, and
a first cutting block portion integrally formed with the first spacer portion, the first cutting block portion sized and shaped for positioning outside of the intervertebral disc space and in engagement with an outer surface of the first vertebra when the first spacer portion is positioned at least partially within the intervertebral disc space, the first cutting block having at least one opening extending therethrough; and
a first elongated handle attached to the first body portion to facilitate insertion of the first spacer portion at least partially into the intervertebral disc space and to facilitate removal of the first spacer portion from at least partially within the intervertebral disc space; and
a second member including:
a second body portion having:
a second spacer portion sized and shaped for insertion at least partially into the intervertebral disc space opposite the first spacer portion, and
a second cutting block portion integ rally formed with the second spacer portion, the second cutting block portion sized and shaped for positioning outside of the intervertebral disc space and in engagement with an outer surface of the second vertebra when the second spacer portion is positioned at least partially within the intervertebral disc space; and
a second elongated handle attached to the second body portion to facilitate insertion of the second spacer portion at least partially into the intervertebral disc space and to facilitate removal of the second spacer portion from at least partially within the intervertebral disc space;
wherein the first member is movably connected to the second member;
wherein the first spacer portion is pivotally connected to the second spacer portion;
wherein the first spacer portion is pivotally connected to the second spacer portion by a ball and socket type joint;
wherein the ball and socket type joint includes a domed shaped protrusion extending from the first member and a domed shaped recess formed in the second member.
23. The surgical cutting guide of claim 22 , wherein the second cutting block includes at least one opening extending therethrough.
24. The surgical cutting guide of claim 22 further comprising a mechanism for preventing the domed shape protrusion from separating from the domed shape recess.
25. The surgical cutting guide of claim 24 wherein the domed shaped protrusion comprises at least one indention and the domed shape recess comprises at least one tab and wherein the at least one tab is insertable through the at least one indention and wherein the dome shaped protrusion is rotatable relative to the domed shape recess after insertion of the at least one tab through the at least one indention to prevent the domed shape protrusion from separating from the domed shape recess.
26. The surgical cutting guide of claim 22 wherein the first elongated handle is permanently attached to the first body portion.
27. The surgical cutting guide of claim 26 wherein the second elongated handle is permanently attached to the second body portion.
28. The surgical cutting guide of claim 22 wherein the first elongated handle is removably attached to the first body portion.
29. The surgical cutting guide of claim 28 wherein the second elongated handle is removably attached to the second body portion.