Other

Aflatoon Kamran

Chris Maurer

A threaded rod or pedicle screw for insertion into the pedicle portion of a vertebra and having at its exposed end a second threaded rod rigidly connected in a generally parallel orientation to the longitudinal axis of the pedicle screw. The second rod being offset from the longitudinal axis of the pedicle screw and having a locking pin or arm and retaining nut for affixing a rod to the pedicle screw substantially over and aligned with the longitudinal axis of the pedicle screw.

Bone anchoring member

An interbody fusion cage having a generally symmetric, annular cage body surrounding a central void extending from a lower surface to an upper surface in which to retain graft material in contact with adjacent vertebra. A lateral channel extending into each half from the cage perimeter contains a worm drive screw. One or more longitudinal channels extending from the upper surface to the lower surface intersect each lateral channel and house a pin which is provided with a series of helically cut worm gear teeth on its external surface for engaging the worm drive screw. The pins are simultaneously externally threaded and engaged to the cooperatively threaded internal surface of the longitudinal channel such that rotation of the drive screw by the surgeon after implantation causes the pins to rotate with the longitudinal channel and advance into the adjacent bone.

Open body box form interbody fusion cage

A multi-piece disc replacement implant device for replacing a disc removed by a discectomy including an upper plate member, a lower plate member, and an intermediate resilient member providing movement between the two plate members replicating the natural movement of the spine including flexion/extension, lateral bending, and, in some embodiments, rotation. The plate members are rigid and have orthogonal sidewalls forming an enclosure. The resilient member is an elastic solid or a multi-chamber balloon structure of fluid-filled sacks that collectively define a non-uniform shape such as an oblate spheroid, or a helically coiled string of beads. Such an implant is capable of supporting the compressive and cyclic loads required of a natural disc. The upper and lower plate members are cooperatively formed to selectively limit the allowable range of motion in any given direction. Alternate embodiments of the invention may be employed in conjunction with removal of the nucleus pulposus when removal of the annulus fibrosus (annulotomy) is not required or desirable.

Growing community of inventors

Corona Del Mar, CA, United States of America

Aflatoon Kamran