Inter-vertebral disc motion devices and methods of use
OwnerM. S. Abdouinventor
Life of this patent
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Abstract
A mobile device is adapted to at least partially replace the motion characteristics of a natural inter-vertebral disc positioned in a disc space. In an embodiment, a receptacle is coupled to the bearing surface. The receptacle is adapted to accept an implantable material without the removal of the bearing surface, wherein the implantable material contacts the abutment surface of each of the vertebral bodies adjacent to the disc space and leads to fusion and immobilization of two vertebral bodies adjacent the disc space.
Claims51
A method for the correction of vertebral scoliosis without bone fusion using a minimally invasive surgical technique, comprising:
- laterally approaching a side of a convexity of a deformity in the spine, wherein the side of the convexity is a side of the vertebral midline in which the vertical distance between the pedicle portion of each vertebral body of the spine is greatest;
- and
- placing a mobile orthopedic prosthesis into a disc space via the lateral approach, wherein the orthopedic prosthesis contains at least one bearing surface that is adapted to at least partially replace a natural inter-vertebral disc, wherein the length of the prosthesis in the coronal plane is less than that of the inter-vertebral disc.
A method of repairing and augmenting a fractured vertebral body that abuts an implanted mobile disc prosthesis without fusion to another vertebral body, comprising:
- placing a rigid orthopedic brace across a fracture site via a convex side of a spine deformity and anchoring the brace to bone using bone fasteners on either side of the fracture site, wherein the brace contains at least one rigid member wherein the brace is positioned in the disc space so as to resist aberrant settlement of an upper vertebral bone relative to a lower vertebral bone and re-formation of the abnormal alignment in the coronal plane;
- and
- preserving the mobility of a natural disc or mobile disc prosthesis that abuts the fractured vertebra.
An orthopedic implant that is adapted to be positioned within a space between a first bone and an adjacent second bone, comprising:
- a first member having a first abutment surface that is adapted to abut a first surface of the first bone, wherein the first member further contains a second abutment surface that is adapted to form a first articulation with a second member;
- the second member having a first abutment surface that is adapted to abut a first surface of the second bone, wherein the second member further contains a second abutment surface that is adapted to form the first articulation with the second abutment surface of the first member, and wherein the second member is movable relative to the first member across the first articulation;
- a cavity that is at least partially contained within the implant and adapted to accept a bone forming material, wherein the cavity contains a first aperture that opens onto a surface of the first bone and at least a second aperture that opens onto a surface of the second bone, wherein bone forming material, when implanted into the cavity, directly contacts a surface of each of said first and the second bones and produces a bony fusion that abolishes movement between them.
A method for the treatment of cervical spine disease, comprising:
- positioning a first orthopedic implant into at least one unco-vertebral joint at the level of a diseased cervical intervertebral disc, wherein the joint is located between an unicate process of a superior surface of an inferior cervical vertebral bone and an inferior surface of an adjacent superior cervical bone;
- orienting the implant so that an inferior abutment surface of the implant rests atop the uncite process of the superior surface of the interior vertebral bone;
- leaving at least a segment of the diseased cervical intervertebral disc undisturbed.
An orthopedic implant that is adapted to be positioned within an intervertebral disc space that is between a first vertebral bone and an adjacent second vertebral bone, comprising:
- a first implant member having a bone abutment surface that is adapted to abut a first surface of the first vertebral bone, wherein the first member contains a first bearing surface and a second bearing surface that are rigidly connected to one another by a first interposed segment;
- a second implant member having a bone abutment surface that is adapted to abut a first surface of the second vertebral bone, wherein the second member contains a first bearing surface that is adapted to articulate with the first bearing surface of the first member, wherein the second member contains a second bearing surface that is adapted to articulate with the second bearing surface of the first member;
- wherein motion between the first and the second vertebral bones is maintained by the implant, and wherein the first member articulates with the second member at the first and second bearing surfaces alone.
A mobile orthopedic implant that is adapted to be positioned within an intervertebral disc space between a first vertebral bone and an adjacent second vertebral bone, comprising:
- a first implant member having a bone abutment surface that is adapted to abut a surface of the first vertebral bone and having a first bearing that is adapted to articulate with a bearing surface of a second implant member;
- an elongated member that extends posteriorly along a first longitudinal axis form a aperture of an anterior surface of the first implant member, the elongated member being attached to a proximal aspect of at least one bone fixation member, wherein the fixation member is adapted to rotate in a circular trajectory about the first longitudinal axis, wherein the bone fixation member contains a curved distal tip that is tapered along the direction of rotation of the first circular trajectory, wherein the tapered tip is adapted to forcibly advance and fixate into the adjacent first vertebral bone when the fixation member is rotated in the direction of the taper, and wherein the fixation member is separated from simultaneous anchor into each of the first and the second vertebral bones;
- a second implant member having a bone abutment surface that is adapted to abut a surface of the second vertebral bone and having a first bearing that is adapted to articulate with the first bearing surface of the first implant member, wherein the articulation maintains motion between said first and second vertebral bones.
A orthopedic implant adapted to be positioned within an intervertebral disc space that is between a first vertebral bone and an adjacent second vertebral bone, comprising:
- a first bone abutment surface that is adapted to abut a surface of the first vertebral bone and a second bone abutment surface that is adapted to abut a surface of the second vertebral bone;
- a projection that extends outward along a longitudinal axis from the first bone abutment surface, wherein the projection forms a ridge having a total width, wherein the ridge contains at least one movable segment that is adapted to rotate from a first to a second position relative to a second ridge segment, and wherein the total width of the ridge is greater when the movable segment is in the second position.
An orthopedic implant for placement within an intervertebral disc space that is positioned between a first and a second immediately-adjacent vertebral bones, comprising:
- a body having a first bone abutment surface that can abut the first vertebral bone, a second bone abutment surface that can abut the second vertebral bone and a connecting segment that joins the said abutment surfaces, wherein the body extends from an anterior surface to a posterior end, wherein the anterior surface contains at least one aperture that extends along a first trajectory and onto at least one of said abutment surfaces;
- an anchor that is adapted to be positioned within the aperture of the anterior surface and to extend from a proximal segment to a distal end along a trajectory that is at least partially curvilinear, wherein the anchor has a total length greater than that of the aperture, wherein, when seated in the aperture, at least the distal end of the anchor is positioned within one of the said vertebral bones and separated from threaded engagement with it.
Dependencies are inferred from the claim text.