The present invention provides for an improved spinal implant which is useful in bone fixation surgeries. The spinal implant as described herein provides a surgeon with a device that can easily and safely be inserted into the space previously occupied by the spinal disc. The spinal implant contains one or more magnets positioned on or within the device to self-align with one or more additional spinal implants inserted therein for the purpose of preventing misalignment of a plurality of implant devices during surgical procedures and preventing implant expulsion.

Spinal tissue distraction devices that include a member which has a pre-deployed configuration for insertion between tissue layers and a deployed configuration in which the member, by change of configuration, forms a support structure for separating and supporting layers of spinal tissue.

An adjustable spinal fusion intervertebral implant is provided that can comprise upper and lower body portions that can each have proximal and distal wedge surf aces disposed at proximal and distal ends thereof. An actuator shaft disposed intermediate the upper and lower body portions can be actuated to cause proximal and distal protrusions to converge towards each other and contact the respective ones of the proximal and distal wedge surfaces. Such contact can thereby transfer the longitudinal movement of the proximal and distal protrusions against the proximal and distal wedge surfaces to cause the separation of the upper and lower body portions, thereby expanding the intervertebral implant. The upper and lower body portions can have side portions that help facilitate linear translational movement of the upper body portion relative to the lower body portion.

A vertebral body spacer of the present invention is used by being inserted between a vertebral body and a vertebral body (intervertebral space). The vertebral body spacer has a block body constituted of titanium or a titanium alloy as a main component thereof, and provided with a pair of contact surfaces to be made contact with the vertebral body and the vertebral body. The block body includes a frame-shaped dense part and a porous part provided inside the dense part, and a porosity of at least a surface of the porous part is larger than a porosity of the dense part. According to the present invention, it is possible to maintain an appropriate size between the vertebral bodies (intervertebral space).

The present invention relates to a spinal arthrodesis system including at least two types of implants from among the three following types: an intersomatic implant (IS), including at least one passage (40) mating at least one anchoring device (1); an interspinous implant (IE), including at least two wings able to run along a portion of the vertebral spines (EI, ES); a facet implant (IF) including a bone attachment.

A bi-directional fixating transvertebral (BDFT) screw/cage apparatus is provided. The BDFT apparatus includes an intervertebral cage including a plurality of internal angled screw guides, a plurality of screw members, and a cage indentation adjacent to the screw guides that independently or supplemented by other screw locking mechanisms prevents the screw members from pulling out of the internal angled screw guides. The internal angled screw guides orient a first screw member superiorly and a second screw member inferiorly. The intervertebral cage is adapted for posterior lumbar intervertebral placement, anterior lumbar intervertebral placement, anterio-lateral thoracic intervertebral placement, or anterior cervical intervertebral placement.

Spinal implants are described that may be surgically implanted into the spine to replace damaged or diseased discs using a posterior approach. The implants are prosthetic devices that can approach or mimic the physiological motion and reaction of the natural disc. The implants are adapted to be used in minimally invasive surgical procedures.

A facet joint replacement system includes an inferior implant with an inferior articular surface, a superior implant with a superior articular surface and may include a crosslink extending across a vertebral sagittal plane. The inferior implant may comprise an inferior strut, and a polyaxially adjustable, lockable mechanism which may couple the inferior articular surface with a first end of the inferior strut, and couple the inferior articular surface with the crosslink. A second end of the inferior strut may be secured to a polyaxially adjustable, lockable fixation assembly securable in a vertebra. The superior implant may be secured to a polyaxially adjustable lockable fixation assembly securable in a vertebra. The positions of the inferior articular surface and the first end of the inferior strut are independently translatable along a medial-lateral axis of the vertebra prior to lockout by the lockable mechanism. The crosslink may be placed into the lockable mechanism from a posterior approach.

A vertebral fixation plate assembly for securing adjacent vertebral bodies is provided that is configured to distract or extend along its length, as well as provide multiple degrees of freedom between the fixation points and the vertebral fixation plate in order to accommodate different installation locations, as well as different surgical approaches. Methods of using the vertebral fixation plate assembly are also provided.

An intervertebral implant is configured to be implanted in an intervertebral space in a first initial configuration. Subsequently, an actuator is configured to be driven in an actuation direction such that the actuator urges the implant to expand along a first expansion direction. Once the implant has been fully expanded along the first expansion direction, the actuator is configured to be further driven in the actuation direction so as to expand the implant in a second expansion direction that is perpendicular to the first expansion direction.