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US 12,383,410 B2Granted
Dynamic inter vertebral spacer implant
AssigneeAdditive Implants, Inc.
InventorsJohn R. Ehteshami, Mahyar Zoghi
Life of this patent
Estimating the term…
Abstract
Intervertebral spacer implants with dynamic load spreading features responsive to external loads and having attachment mechanisms. The dynamic load spreading features having a native state and a loaded state, which complements vertebral end plate geometry and disperses load to the epiphyseal rim.
Claims13
An intervertebral spacer implant comprising:
- a body comprising:
- a first side configured to contact a first vertebra;
- a second side opposite the first side and configured to contact a second vertebra adjacent to the first vertebra;
- a perimeter wall extending around the body between the first and second sides and comprising an aperture;
- and
- a hollow interior enclosed by the perimeter wall between the first and second sides;
- wherein the hollow interior is in communication with the aperture of the perimeter wall but does not extend into the perimeter wall;
- wherein the first side is configured to flex, such that, with the body implanted between the first vertebra and the second vertebra, in response to pressure between the first vertebra and the second vertebra, a central portion of the first side moves, relative to the perimeter wall, into the hollow interior;
- wherein the first side comprises a first cantilevered member comprising:
- a first base adjacent to the perimeter wall;
- and
- a first end region extending away from the first base and the perimeter wall, and into the central portion;
- and
- the first cantilevered member flexes in response to the pressure such that the first end region moves into the hollow interior;
- and
- wherein the first side further comprises a second cantilevered member comprising:
- a second base adjacent to the perimeter wall;
- and
- a second end region extending away from the second base and the perimeter wall, and into the central portion;
- and
- the second cantilevered member flexes, independently of the first cantilevered member, in response to the pressure such that the second end region moves into the hollow interior.
18 more elements
An intervertebral spacer implant comprising:
- a body comprising:
- a first side configured to contact a first vertebra;
- a second side opposite the first side and configured to contact a second vertebra adjacent to the first vertebra;
- a perimeter wall extending around the body between the first and second sides;
- and
- a hollow interior extending through the body between the first and second sides;
- wherein the first side extends to cover at least part of the hollow interior;
- wherein the perimeter wall comprises an aperture configured such that, with the body implanted between the first vertebra and the second vertebra, in response to pressure between the first vertebra and the second vertebra, an edge of the perimeter wall rotates;
- wherein the first side is configured to flex, such that, with the body implanted between the first vertebra and the second vertebra, in response to the pressure, a central portion of the first side moves, relative to the perimeter wall, into the hollow interior;
- wherein the first side comprises a first cantilevered member comprising:
- a first base adjacent to the perimeter wall;
- and
- a first end region extending away from the first base and the perimeter wall, and into the central portion;
- and
- the first cantilevered member flexes in response to the pressure such that the first end region moves into the hollow interior;
- and
- wherein the aperture is positioned adjacent to the first base such that flexure of the perimeter wall facilitates pivotal motion of the first base.
14 more elements
An intervertebral spacer implant comprising:
- a body comprising:
- a first side configured to contact a first vertebra;
- a second side opposite the first side and configured to contact a second vertebra adjacent to the first vertebra;
- a perimeter wall extending around the body between the first and second sides wherein the first side extends superiorly above the perimeter wall;
- and
- a hollow interior circumscribed by the perimeter wall and extending through the body from the first side to the second side;
- wherein the perimeter wall comprises:
- a first lateral side comprising a first aperture;
- a second lateral side comprises a second aperture;
- an anterior side;
- and
- a posterior side;
- wherein the first aperture and the second aperture are configured such that, with the body implanted between the first vertebra and the second vertebra, in response to pressure between the first vertebra and the second vertebra, the first lateral side and the second lateral side flex;
- wherein the anterior side and the posterior side each lack apertures configured to provide flexure of the anterior side and the posterior side in response to the pressure;
- wherein the first side is configured to flex, such that, with the body implanted between the first vertebra and the second vertebra, in response to the pressure, a central portion of the first side moves, relative to the perimeter wall, into the hollow interior;
- and
- wherein the first side comprises a first cantilevered member comprising:
- a first base adjacent to and extending parallel to the first aperture;
- and
- a first end region extending away from the first base and the perimeter wall, and into the central portion;
- the first cantilevered member flexes in response to the pressure such that the first end region moves into the hollow interior;
- the second side comprises a second cantilevered member comprising:
- a second base adjacent to and extending parallel to the second aperture;
- and
- a second end region extending away from the second base and the perimeter wall, and into the central portion;
- and
- the second cantilevered member flexes, independently of the first cantilevered member, in response to the pressure such that the second end region moves into the hollow interior.
24 more elements
Dependencies are inferred from the claim text.