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US 12,678,291 B2Granted
3D printed metal corpectomy device with structural and endplate lattice structures
AssigneeWarsaw Orthopedic, Inc.
InventorsKeith E. Miller, Julien J. Prevost
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Abstract
A corpectomy implant device having a solid portion, structural volume and porous end plates configured is disclosed. In some embodiments, the corpectomy device comprises a stochastic lattice structure in the structural volume of the device to reduce stiffness and improve radiolucency. In some embodiments, the porous endplates comprise a lattice configured to provide porosity for bone ingrowth. In some embodiments, endplates are configured to facilitate insertion of the implant between the adjacent vertebrae and to provide anchoring of the corpectomy device to and prevent migration of the device implant in an installed state.
Claims20
A cervical corpectomy implant, comprising:
- a structural volume comprising;
- an anterior volume comprising a first lattice structure,
- a posterior volume comprising a second lattice structure,
- a first side volume comprising a third lattice structure, and
- a second side volume comprising a fourth lattice structure,
- an upper endplate volume comprising a fifth lattice structure;
- and
- a lower endplate volume comprising a sixth lattice structure;
- wherein one or more of the first lattice structure, the second lattice structure, the third lattice structure, the fourth lattice structure, the fifth lattice structure, and the sixth lattice structures are stochastic,
- wherein the upper endplate volume and the lower endplate volume comprise different volume fill % compared to the anterior volume, the posterior volume, the first side volume, and the second side volume,
- wherein the anterior volume, the posterior volume, the first side volume, the second side volume, the upper endplate volume, and the lower endplate volume each have an average lattice pore size of about 100 to about 500 microns,
- wherein the anterior volume, the posterior volume, the first side volume, and the second side volume are arranged to form a hollow cavity extending along an axis between the upper endplate volume and the lower endplate volume,
- wherein the upper endplate volume comprises a first plurality of anti-migration features extending from upper endplate volume surface, and
- wherein the lower endplate volume comprises a second plurality of anti-migration features extending from lower endplate volume surface.
11 more elements
A method for treating a plurality of vertebrae regions in a patient, the method comprising:
- inserting a cervical corpectomy implant between an upper and lower vertebrae, wherein the cervical corpectomy implant comprises:
- a structural volume comprising;
- an anterior volume comprising a first lattice structure,
- a posterior volume comprising a second lattice structure,
- a first side volume comprising a third lattice structure, and
- a second side volume comprising a fourth lattice structure,
- an upper endplate volume comprising a fifth lattice structure;
- and
- a lower endplate volume comprising a sixth lattice structure;
- wherein one or more of the first lattice structure, the second lattice structure, the third lattice structure, the fourth lattice structure, the fifth lattice structure, and the sixth lattice structures are stochastic,
- wherein the upper endplate volume and the lower endplate volume comprise different volume fill % compared to the anterior volume, the posterior volume, the first side volume, and the second side volume,
- wherein the anterior volume, the posterior volume, the first side volume, the second side volume, the upper endplate volume, and the lower endplate volume each have an average lattice pore size of about 100 to about 500 microns,
- wherein the anterior volume, the posterior volume, the first side volume, and the second side volume are arranged to form a hollow cavity extending along an axis between the upper endplate volume and the lower endplate volume,
- wherein the upper endplate volume comprises a first plurality of anti-migration features extending from upper endplate volume surface, and
- wherein the lower endplate volume comprises a second plurality of anti-migration features extending from lower endplate volume surface, and
- attaching the upper endplate volume to the upper vertebrae in a configuration that the first plurality of anti-migration features engages with an inferior surface of the upper vertebrae;
- positioning the cervical corpectomy implant within a gap between the upper and the lower vertebrae;
- attaching the lower endplate volume to the lower vertebrae in a configuration that the second plurality of anti-migration features engages with a superior surface of the lower vertebrae;
- placing a cervical plate adjacent to the anterior volume;
- inserting a first bone screw through the cervical plate into the upper vertebrae and inserting a second bone screw through the cervical plate into the lower vertebrae to stabilize the corpectomy implant between the upper vertebrae and the lower vertebrae.
17 more elements
Dependencies are inferred from the claim text.