Intervertebral spacer device having an angled perimeter for manipulation using a surgical tool
Instrumentation for implanting an artificial intervertebral disc includes static trials and a dynamic trial for determining the appropriate size of disc to be implanted, static trial holders for manipulating the static trials, inserter/impactors for inserting and removing the static trials and for inserting the artificial intervertebral discs, repositioners/extractors for repositioning and extracting the static trials or the artificial intervertebral discs, and a leveler for setting the proper position of the artificial intervertebral disc. Methods for using the same are also disclosed. Features for artificial intervertebral discs and intervertebral spacer devices useful for manipulation by the instrumentation are also disclosed.
1. A spinal orthopedic device and tool set, comprising:
an intervertebral spacer device having a first baseplate and a second baseplate, the first and second baseplates each including an upper surface, a lower surface, and an angled perimeter, the first and second baseplates mounted to one another such that the first and second baseplates are articulatable relative to one another; and
a manipulation tool having a correspondingly angled distal surface, such that when the correspondingly angled distal surface of the manipulation tool is engaged with the angled perimeter of at least one of the baseplates, rotation of the baseplates relative to the correspondingly angled distal surface of the manipulation tool is prevented by interference between the angled perimeter of at least one of the baseplates and the correspondingly angled distal surface of the manipulation tool, the manipulation tool further including a spacer protruding outwardly from the angled distal surface, the spacer having an upper angled surface and an lower angled surface,
wherein the angled distal surface of the manipulation tool is engageable with the angled perimeter of at least one of the baseplates in a plurality of locations, each of the plurality of locations establishing a respective desired surgical approach angle for manipulating the intervertebral spacer device, and
wherein when the manipulation tool is engaged to the baseplates in any one of the plurality of locations, the first baseplate is lordodically angled with respect to the second baseplate as the lower surface of the first baseplate is held against the upper angled surface of the spacer and the angled perimeter of the second baseplate is parallel with respect to the angled distal surface of the manipulation tool as the angled perimeter of the second baseplate is held against the angled distal surface of the manipulation tool.
2. The spinal orthopedic device and tool set of claim 1 , wherein the angled perimeter of at least one of the baseplates comprises a protruding corner, and wherein the correspondingly angled distal surface of the manipulation tool comprises a recessed corner.
3. The spinal orthopedic device and tool set of claim 2 , wherein the angled perimeter of at least one of the baseplates comprises at least two flat perimeter surfaces converging to form the protruding corner, and wherein the correspondingly angled distal surface of the manipulation tool comprises at least two flat surfaces converging to form the recessed corner.
4. The spinal orthopedic device and tool set of claim 1 , wherein the angled perimeter of at least one of the baseplates comprises three flat perimeter surfaces forming two protruding corners of at least one of the baseplates, a first of the flat perimeter surfaces converging with a second of the flat perimeter surfaces to form a first of the protruding corners, the first of the flat perimeter surfaces also converging with a third of the flat perimeter surfaces to form a second of the protruding corners; and
wherein the correspondingly angled distal surface of the manipulation tool comprises three flat surfaces forming two recessed corners of the correspondingly angled distal surface of the manipulation tool, a first of the flat surfaces converging with a second of the flat surfaces to form a first of the recessed corners, the first of the flat surfaces also converging with a third of the flat surfaces to form a second of the recessed corners.
5. The spinal orthopedic device and tool set of claim 4 , wherein the intervertebral spacer device is engageable for manipulation using the manipulation tool by positioning the first protruding corner in the first recessed corner, and positioning the second protruding corner in the second recessed corner.
6. The spinal orthopedic device and tool set of claim 5 , wherein the intervertebral spacer device is also engageable for manipulation using the manipulation tool by positioning the first protruding corner in the second recessed corner.
7. The spinal orthopedic device and tool set of claim 6 , wherein the intervertebral spacer device is also engageable for manipulation using the manipulation tool by positioning the second protruding corner in the first recessed corner.
8. The spinal orthopedic device and tool set of claim 5 , wherein the intervertebral spacer device is also engageable for manipulation using the manipulation tool by positioning the second protruding corner in the first recessed corner.
9. The spinal orthopedic device and tool set of claim 4 , wherein each of the flat perimeter surfaces faces a respective desired surgical approach aspect of at least one of the baseplates.
10. The spinal orthopedic device and tool set of claim 9 , wherein the first flat perimeter surface faces an anterior aspect of at least one of the baseplates.
11. The spinal orthopedic device and tool set of claim 10 , wherein the second flat perimeter surface faces a left antero-lateral aspect of at least one of the baseplates, and the third flat perimeter surface faces a right antero-lateral aspect of at least one of the baseplates.
12. The spinal orthopedic device and tool set of claim 1 , wherein one of the plurality of locations establishes an anterior surgical approach angle.
13. The spinal orthopedic device and tool set of claim 12 , wherein the one of the plurality of locations is a first of the plurality of locations, and wherein a second of the plurality of locations establishes a left antero-lateral surgical approach angle, and wherein a third of the plurality of locations establishes a right antero-lateral surgical approach angle.
14. The spinal orthopedic device and tool set of claim 1 , wherein the angled perimeter of at least one of the baseplates includes a plurality of flat surfaces adjacent one another and the correspondingly angled distal end has a central flat surface flanked by two flat surfaces; and wherein at least one of the baseplates is engageable for manipulation using the manipulation tool by positioning the primary flat surface against any one of the plurality of flat surfaces, such that at least one of the two flanking flat surfaces is against another of the plurality of flat surfaces; and wherein the plurality of flat surfaces includes a flat surface facing an anterior aspect of at least one of the baseplates.
15. The spinal orthopedic device and tool set of claim 14 , wherein the plurality of flat surfaces further includes a flat surface facing a left antero-lateral aspect of at least one of the baseplates, and a flat surface facing a right antero-lateral aspect of at least one of the baseplates.
16. The spinal orthopedic device and tool set of claim 1 , wherein the angled perimeter of at least one of the baseplates includes a plurality of surfaces adjacent one another, at least every other ones of the plurality of surfaces being flat, and the correspondingly angled distal surface has a central surface flanked by two flat surfaces; and wherein at least one of the baseplates is engageable for manipulation using the manipulation tool by positioning the two flanking flat surfaces against any two of the flat surfaces of at least one of the baseplates.
17. The spinal orthopedic device and tool set of claim 16 , wherein a pair of flat surfaces of the plurality of surfaces flank an anterior aspect of at least one of the baseplates.
18. The spinal orthopedic device and tool set of claim 17 , wherein the pair of flat surfaces of the plurality of surfaces is a first pair, and a second pair of flat surfaces of the plurality of surfaces further flank a left antero-lateral aspect of at least one of the baseplates, and a third pair of flat surfaces of the plurality of surfaces flank a right antero-lateral aspect of at least one of the baseplates.
19. A spinal orthopedic device and tool set, comprising:
an intervertebral spacer device having a first baseplate and a second baseplate, the first and second baseplates each including an upper surface, a lower surface, and an angled perimeter, the first and second baseplates mounted to one another such that the first and second baseplates are articulatable relative to one another; and
a manipulation tool having a correspondingly angled distal surface, such that when the correspondingly angled distal surface of the manipulation tool is engaged with the angled perimeter of at least one of the baseplates, rotation of the baseplates relative to the correspondingly angled distal surface of the manipulation tool is prevented along a first rotational axis, the manipulation tool further including a spacer protruding outwardly from the angled distal surface, the spacer having an upper angled surface and an lower angled surface,
wherein the angled distal surface of the manipulation tool is engageable with the angled perimeter of at least one of the baseplates in a plurality of locations, each of the plurality of locations establishing a respective desired surgical approach angle for manipulating the intervertebral spacer device, and
wherein when the manipulation tool is engaged to the baseplates in any one of the plurality of locations, the first baseplate is lordodically angled with respect to the second baseplate along a second rotational axis perpendicular to the first rotational axis as the lower surface of the first baseplate is held against the upper angled surface of the spacer and the angled perimeter of the second baseplate is parallel with respect to the angled distal surface of the manipulation tool as the angled perimeter of the second baseplate is held against the angled distal surface of the manipulation tool.