Asymmetrically expandable cage
AssigneeIntegrity Implants Inc.
InventorsJohn To, Christopher Walsh
Life of this patent
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Abstract
The present disclosure describes an intervertebral implant having a laterovertically-expanding shell operable for a reversible expansion from a collapsed state into an expanded state, the laterovertically-expanding shell having one or more connectors, and a pair of lateral extension elements that function to laterally expand the footprint of the implant within an intervertebal disc space.
Claims19
A surgical implant configured for placement within an intervertebral space, comprising:
- a laterovertically-expanding shell having a longitudinal axis and configured to create an intervertebral scaffolding system in vivo, the shell having a first body portion configured to engage a first vertebral endplate and a second body portion configured to engage a second vertebral endplate, the shell further including a collapsed state and an expanded state;
- wherein the shell is configured to extend asymmetrically from the longitudinal axis, extending further in a first lateral direction than in a second lateral direction to bias a profile of the implant in the first lateral direction when the shell is in the expanded state;
- and
- wherein the first body portion includes a first elongated support beam extending parallel to the longitudinal axis, a second elongated support beam laterally displaced from the first elongated support beam and extending parallel to the longitudinal axis, and a plurality of connectors extending between the first and second elongated support beams.
A surgical implant configured for placement within an intervertebral space, comprising:
- a laterovertically-expanding shell, the shell having a longitudinal axis and configured to create an intervertebral scaffolding system in vivo, the shell having a first body portion configured to engage a first vertebral endplate and a second body portion configured to engage a second vertebral endplate, the shell further including a collapsed state and an expanded state;
- wherein the shell is configured to extend asymmetrically from the longitudinal axis, extending further in a first lateral direction than in a second lateral direction to bias a profile of the implant in the first lateral direction when the shell is in the expanded state;
- and
- wherein the shell includes a central layer and a plurality of surface layers, the central layer and surface layers comprising different materials.
A surgical implant having a combination of materials combined in layers, comprising:
- a laterovertically-expanding shell having a distal region and configured to create an intervertebral scaffolding system in vivo, the shell having a layered assembly that includes a central layer and a plurality of surface layers;
- wherein
- the central layer has a top face and a bottom face, and is configured to associate with the plurality of surface layers;
- the plurality of surface layers has a top surface layer and a bottom surface layer, the top surface layer configured to associate with the top face of the central layer and form a first body portion configured to engage a first vertebral endplate;
- and the bottom surface layer configured to associate with the bottom face of the central layer and form a second body portion configured to engage a second vertebral endplate;
- and
- the shell has a collapsed state and an expanded state;
- wherein the central layer and the plurality of surface layers comprise different materials.
Dependencies are inferred from the claim text.