Intervertebral disc nucleus implants and methods

Details Intervertebral disc nucleus implants and methods Intervertebral disc nucleus implants and methods

Filed on

2011-05-10

Date issued

2011-05-10

Examiner

Stewart, Alvin J. (Department: 3774)

Patent Class

Prosthesis (i.e., artificial body members), parts thereof, or ai

SubClass

Implantable prosthesis

SubSubClass

Bone

Type

Reexamination Certificate

Status

active

Patent number

07938860

Description

ABSTRACT:
Nucleus pulposus implants that are resistant to migration in and/or expulsion from an intervertebral disc space are provided. In one form of the invention, an implant includes a load bearing elastic body surrounded in the disc space by an anchoring, preferably resorbable, outer shell. In certain forms of the invention, the elastic body is surrounded by a supporting member, such as a band or jacket, and the supporting member is surrounded by the outer shell. Kits for forming such implants are also provided. In another form of the invention, an implant is provided that has locking features and optional shape memory characteristics. In yet another aspect of the invention, nucleus pulposus implants are provided that have shape memory characteristics and are configured to allow short-term manual, or other deformation without permanent deformation, cracks, tears, breakage or other damage. Methods of forming and implanting the implants are also described, as are delivery devices and components thereof for delivering the implants.

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