INTERVERTEBRAL IMPLANT AND METHODS OF IMPLANTATION AND MANUFACTURE
First Claim
1. An intervertebral prosthetic device for implantation within a disc space between adjacent first and second vertebral endplates, comprising:
- a body including a main body with an outer surface bearing portion configured to interface with at least one of and articulate relative to at least one of the first and second vertebral endplates, and including an orientation protrusion shaped in a manner to at least partially inhibit rotation of the body in the disc space;
the body being sized in at least one direction to fit inside a boundary defined by a travel path of the first vertebra relative to the second vertebra, the travel path forming an arc about a center of rotation of the first vertebra, the travel path being spaced from the center of rotation a distance substantially equivalent to the distance from the center of rotation to the second vertebral endplate or vice versa.
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Abstract
In one aspect, an intervertebral prosthetic device for implantation within a disc space between adjacent first and second vertebral endplates includes a body including a main body with an outer surface bearing portion configured to interface with and articulate relative to one of the first and second vertebral endplates. It also comprises an orientation protrusion shaped in a manner to at least partially inhibit rotation of the body in the disc space. The body is sized in at least one direction to fit inside a boundary defined by a travel path of the first vertebra relative to the second vertebra, the travel path forming an arc about a center of rotation of the first vertebra, the travel path being spaced from the center of rotation a distance substantially equivalent to the distance from the center of rotation to the second vertebral endplate.
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Citations
20 Claims
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1. An intervertebral prosthetic device for implantation within a disc space between adjacent first and second vertebral endplates, comprising:
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a body including a main body with an outer surface bearing portion configured to interface with at least one of and articulate relative to at least one of the first and second vertebral endplates, and including an orientation protrusion shaped in a manner to at least partially inhibit rotation of the body in the disc space; the body being sized in at least one direction to fit inside a boundary defined by a travel path of the first vertebra relative to the second vertebra, the travel path forming an arc about a center of rotation of the first vertebra, the travel path being spaced from the center of rotation a distance substantially equivalent to the distance from the center of rotation to the second vertebral endplate or vice versa. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An intervertebral prosthesis implantable within a disc space, disposed between upper and lower vertebral endplates, comprising:
a main body formed of medical-grade polymeric material, the main body having an outer surface comprising an upper bearing portion and a lower bearing portion, at least one of the upper and lower bearing portions being configured to articulate relative to one of the upper and lower vertebral endplates, the at least one of the upper and lower bearing portions including fluid-receiving pores and having a hardness that permits deformation of the main body to expel the fluid from the pores under a load applied by the respective upper or lower vertebral endplate. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
Specification