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US 2026/0256596 A1Published application
Patient-specific cervical implants and methods of making the same
AssigneeCarlsmed, Inc.
InventorsPedro Resendiz CHAVEZ, Niall Patrick CASEY
Life of this patent
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Abstract
The present technology includes patient-specific spinal fusion devices, including interbody implants that are designed to be positioned within a disc space between two vertebral bodies. The interbody implants can include a superior-facing endplate and an inferior-facing endplate each having a patient-specific topography. The superior-facing endplate and the inferior-facing endplate can also have different sizes or footprints based on a size and desired implant coverage of the corresponding vertebral body endplate each implant endplate is designed to contact when implanted. Methods for designing and manufacturing patient-specific spinal fusion devices are also described herein.
Claims97
A patient-specific interbody implant for a patient, the implant comprising:
- a body;
- a first endplate configured to contact an inferior surface of a first vertebral body when the implant is implanted in the patient, wherein—
- the first endplate includes a patient-specific topography designed to fit a corresponding topography of the inferior surface of the first vertebral body, and
- the first endplate has a first size designed to cover at least 75% of a first surface area of the inferior surface of the first vertebral body;
- and
- a second endplate configured to contact a superior surface of a second vertebral body when the implant is implanted in the patient, wherein—
- the second endplate includes a patient-specific topography designed to fit a corresponding topography of the inferior surface of the second vertebral body, and
- the second endplate has a second size designed to cover at least 75% of a second surface area the superior surface of the second vertebral body,
- wherein the first size and the second size are different.
6 more elements
A computer-implemented method of designing a patient-specific interbody implant for a patient, the method comprising:
- receiving image date of at least a portion of the patient's spine;
- generating a digital representation of the patient's spine based at least in part on the image data;
- adjusting the digital representation of the patient's spine to provide one or more corrections to the patient's spine, and
- designing a patient-specific interbody implant to provide the one or more corrections to the patient's spine, wherein the patient-specific interbody implant includes —
- a first endplate configured to contact an inferior surface of a first vertebral body when the implant is implanted in the patient, wherein the first endplate has a first size designed to cover at least 75% of a first surface area of the inferior surface of the first vertebral body, and
- a second endplate configured to contact a superior surface of a second vertebral body when the implant is implanted in the patient, wherein the second endplate has a second size designed to cover at least 75% of a second surface area the superior surface of the second vertebral body,
- wherein the first size and the second size are different.
4 more elements
A system for designing a patient-specific interbody implant for a patient, the system comprising:
- one or more processors;
- and
- one or more memories storing instructions that, when executed by the one or more processors, cause the system to perform a process for designing a patient-specific interbody implant for the patient, the process comprising:
- receiving image date of at least a portion of the patient's spine;
- generating a digital representation of the patient's spine based at least in part on the image data;
- adjusting the digital representation of the patient's spine to provide one or more corrections to the patient's spine, and
- designing a patient-specific interbody implant to provide the one or more corrections to the patient's spine, wherein the patient-specific interbody implant includes—
- a first endplate configured to contact an inferior surface of a first vertebral body when the implant is implanted in the patient, wherein the first endplate has a first size designed to cover at least 75% of a first surface area of the inferior surface of the first vertebral body, and
- a second endplate configured to contact a superior surface of a second vertebral body when the implant is implanted in the patient, wherein the second endplate has a second size designed to cover at least 75% of a second surface area the superior surface of the second vertebral body,
- wherein the first size and the second size are different.
7 more elements
A patient-specific interbody implant for a patient, the implant comprising:
- a body;
- a first endplate configured to contact an inferior surface of a first vertebral body when the implant is implanted in the patient, wherein—
- the first endplate includes a patient-specific topography designed to fit a corresponding topography of the inferior surface of the first vertebral body, and
- the first endplate has a first size and a first shape designed to at least partially cover a surface area of the inferior surface of the first vertebral body;
- and
- a second endplate configured to contact a superior surface of a second vertebral body when the implant is implanted in the patient, wherein—
- the second endplate includes a patient-specific topography designed to fit a corresponding topography of the inferior surface of the second vertebral body, and
- the second endplate has a second size and a second shape designed to at least partially cover a surface area the superior surface of the second vertebral body,
- wherein the first size and the second size are different and the first shape and the second shape are different.
6 more elements
A computer-implemented method of designing a patient-specific interbody implant for a patient, the method comprising:
- receiving image date of the patient's spine;
- generating a digital representation of at least a portion of the patient's spine based at least in part on the image data, wherein the portion of the patient's spine includes—
- a first vertebral body with a first central region and a first cortical rim surrounding the first central region, and
- a second vertebral body with a second central region and a second cortical rim surrounding the second central region;
- and
- designing a patient-specific interbody implant based on the digital representation, wherein the patient-specific interbody implant includes—
- a first endplate configured to contact a first threshold load-bearing amount of the first central region and to be surrounded by the first cortical rim when implanted, and
- a second endplate configured to contact a second threshold load-bearing amount of the second central region and to be surrounded by the second cortical rim when implanted,
- wherein the first endplate has a first size and the second endplate has a second size different than the first size.
6 more elements
A system for designing a patient-specific interbody implant for a patient, the system comprising:
- one or more processors;
- and
- one or more memories storing instructions that, when executed by the one or more processors, cause the system to perform a process for designing a patient-specific interbody implant for the patient, the process comprising:
- receiving image date of the patient's spine;
- generating a digital representation of at least a portion of the patient's spine based at least in part on the image data, wherein the portion of the patient's spine includes—
- a first vertebral body with a first central region and a first cortical rim surrounding the first central region, and
- a second vertebral body with a second central region and a second cortical rim surrounding the second central region;
- and
- designing a patient-specific interbody implant based on the digital representation, wherein the patient-specific interbody implant includes —
- a first endplate configured to contact a first threshold load-bearing amount of the first central region and to be surrounded by the first cortical rim when implanted, and
- a second endplate configured to contact a second threshold load-bearing amount of the second central region and to be surrounded by the second cortical rim when implanted,
- wherein the first endplate has a first size and the second endplate has a second size different than the first size.
9 more elements
A surgical kit, comprising:
- a first interbody implant having a first endplate and a second endplate;
- a second interbody implant having a third endplate and a fourth endplate;
- and
- a third interbody implant having a fifth endplate and a sixth endplate,
- wherein each of the first, second, third, fourth, fifth, and sixth endplates have different sizes such that no endplate of any implant in the kit is the same size as any other endplate in the kit.
2 more elements
A patient-specific interbody implant for a patient, the implant comprising:
- a body;
- a first endplate configured to contact an inferior surface of a first vertebral body when the implant is implanted in the patient, wherein the first endplate includes—
- a first patient-specific topography designed to fit a corresponding topography of the inferior surface of the first vertebral body, and
- a first cortical rim receiving portion having a first load-bearing seating portion and a first semi-curved perimeter ridge extending in a superior direction from the first load-bearing seating portion;
- and
- a second endplate configured to contact a superior surface of a second vertebral body when the implant is implanted in the patient, wherein the second endplate includes—
- a second patient-specific topography designed to fit a corresponding topography of the superior surface of the second vertebral body, and
- a second cortical rim receiving portion having a second load-bearing seating portion and a second semi-curved perimeter ridge extending in an inferior direction from the second load-bearing seating portion.
5 more elements
A patient-specific interbody implant for a patient, the implant comprising:
- a first endplate configured to contact an inferior surface of a first vertebral body when the implant is implanted in the patient, wherein the first endplate includes a first patient-specific topography designed to fit a corresponding topography of the inferior surface of the first vertebral body;
- a second endplate configured to contact a superior surface of a second vertebral body when the implant is implanted in the patient, wherein the second endplate includes a second patient-specific topography designed to fit a corresponding topography of the superior surface of the second vertebral body;
- an anterior surface extending between the first endplate and the second endplate;
- a posterior surface extending between the first endplate and the second endplate;
- and
- a wing-like extension at an anterior portion of the implant and extending inferiorly relative to a plane of the second endplate such that a first height of the anterior surface is between about 50% and about 200% greater than a second height of posterior surface.
3 more elements
A patient-specific implant system, the system comprising:
- an interbody implant sized and shaped to be implanted within an intervertebral disc space of a patient, wherein the interbody implant includes—
- a superior surface having a first patient-specific topography,
- an inferior surface having a second patient-specific topography, and
- an anterior surface extending between the superior surface and the inferior surface, wherein the anterior surface includes a cavity, the cavity including an aperture configured to receive an inserter instrument, a first recessed portion extending in a first direction relative to the aperture, and a second recessed portion extending in a second direction relative to the aperture;
- and
- a plate sized and shaped to be implanted at an anterior portion of a vertebral column of the patient, wherein the plate includes—
- an anterior surface,
- a posterior surface,
- one or more openings extending between the anterior surface and the posterior surface and sized and shaped to receive one or more fixation elements for coupling the plate to the vertebral column, and
- a plurality of coupling features extending from the posterior surface of the plate, the plurality of coupling features including a first coupling feature sized and shaped to sit within the first recessed portion of the interbody implant and a second coupling feature sized and shaped to sit within the second recessed portion of the interbody implant,
- wherein the interbody implant and the plate are not fixedly coupled together when the coupling features are inserted into the first and second recessed portions to permit micromovements therebetween.
8 more elements
Dependencies are inferred from the claim text.