Interbody fusion implant
AssigneeDePuy Synthes Products, Inc.
InventorKaustubh Mantri
Life of this patent
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Abstract
An intervertebral implant can include a core and a flexible end plate. The core can have a core body that is elongate along a first direction and defines first and second outer surfaces. The flexible end plate can define an inner surface and an opposed bone facing surface that is configured to abut a vertebral body. The flexible end plate can be coupled to the core such that at least a portion of the inner surface faces the first outer surface and is spaced from the first outer surface. The flexible end plate is configured to resiliently flex toward a compressed configuration such that as the flexible end plate flexes toward the compressed configuration, a first end moves relative to the core along the first direction and the portion of the inner surface moves toward the first outer surface.
Claims14
An intervertebral implant comprising:
- a core defining a rear end and a front end that is spaced from the rear end along an insertion direction;
- an end plate that defines a bone facing surface and an inner surface that is opposite the bone facing surface, the end plate further defining a first attachment member and a second attachment member that is spaced from the first attachment member, the first and second attachment members being movably coupled to the core such that at least a portion of the inner surface faces the core and is spaced from the core a first distance along a first direction that is substantially perpendicular to the insertion direction,
- wherein the end plate is configured to resiliently move toward the core along the first direction such that 1) the portion of the inner surface is spaced from the core a second distance along the first direction that is less than the first distance, and 2) at least one of the first and second attachment members moves along the core.
An intervertebral implant comprising:
- a first end plate including a first body that defines a first bone facing surface and a first internal ceiling surface that is opposite the first bone facing surface along a first direction, the first end plate further including at least one wall that extends from the first body substantially along the first direction, wherein the first end plate includes a cavity that is at least partially defined by the wall and the internal ceiling surface;
- a second end plate including a second body that defines a second bone facing surface, the second body further defining a core having a second inner surface that is spaced from the second bone facing surface along the first direction, the core configured to be received in the cavity such that the second inner surface faces the internal ceiling surface;
- and
- a biasing member coupled between the first and second endplates along the first direction;
- wherein the first end plate is configured to move relative to the second end plate along the first direction between a first configuration and a second configuration whereby when in the first configuration the internal ceiling surface is spaced from the second inner surface along the first direction by a first distance, and when in the second configuration the internal ceiling surface is spaced from the second inner surface by a second distance that is less than the first distance, and movement of the first end plate from the first configuration to the second configuration causes the biasing member to compress so as to bias the first end plate along a direction from the second configuration toward the first configuration.
Dependencies are inferred from the claim text.