An intervertebral fusion device is disclosed. The intervertebral fusion device comprises a superior component (40), an inferior component (60) and a core component (10). The superior component (40) has a superior component top side and a superior component bottom side and is configured to be received in an intervertebral space between first and second vertebrae whereby the superior component top side abuts against the first vertebra. The inferior component (60) has an inferior component top side and an inferior component bottom side and is configured to be received in the intervertebral space whereby the inferior component bottom side abuts against the second vertebra. The superior component bottom side and the inferior component top side oppose each other when the superior and inferior components (40, 60) are received in the intervertebral space. The core component (10) is configured for insertion between the superior and inferior components (40, 60) whereby a separation between the superior and inferior components is determined. The core component (10) comprises a retention mechanism which moves between a contracted condition and an expanded condition. The core component (10) is insertable between the superior and inferior components (40, 60) when the retention mechanism is in the contracted condition. The retention mechanism inter-engages with the superior component (40) and the inferior component (60) when in the expanded condition and when the core component (10) is received between the superior and inferior components to thereby present resistance to movement of the core component from between the superior and inferior components.

Intervertebral fusion device comprising a superior component, an inferior component, and a core component. The superior component comprises first and second superior parts which are coupled to each other to allow the first and second superior parts to move apart to thereby increase a perimeter of the superior component top side. The inferior component comprises first and second inferior parts which are coupled to each other to allow the first and second inferior parts to move apart to thereby increase a perimeter of the inferior component bottom side. The core component is configured for insertion between the superior and inferior components whereby separation between the superior and inferior components is determined. The core component interengages with each of the superior and inferior components upon insertion. The superior and inferior components are unattached to each other before the core component is inserted between the superior and inferior components. As the core component is progressively inserted between the superior and inferior components, the core component: bears against the first and second superior parts to push the first and second superior parts progressively apart; and bears against the first and second inferior parts to push the first and second inferior parts progressively apart.

An orthopedic implant system is disclosed comprising a staple and a coupling device configured to position tines on the staple relative to a bone to secure an orthopedic implant device to the bone. The orthopedic implant system may comprise the orthopedic implant device also having a wedge and a plate having an external surface configuration. The coupling device may couple the wedge, the plate and the staple whereby when the orthopedic implant is secured in a vertebral body, the external surface configuration of the plate alters the relative orientation of a superior endplate surface plane and an inferior endplate surface plane of the vertebral body and alters the alignment of the spine. In some embodiments, plate tines and staple tines are configured to engage the vertebral body. In some embodiments, the implant device may be used as an arthrodesis device, an intravertebral device or an intervertebral implant device.

A spinal fixation system includes an expandable disc replacement body and an angle-setting disc replacement holder; The expandable disc replacement body includes a first wall, a second wall, and a hinge connecting the first wall and the second wall. An insertion instrument may be used to implant the expandable disc replacement body into a subject. The disc replacement holder is positioned between the first wall and the second wall, and an angle and/or height between the first wall and the second wall can be varied by adjustment of the disc replacement holder and locked into place using locking mechanisms.

An interbody fusion device having an accordion-like structure, wherein the device in inserted into the disc space in its collapsed configuration and then expanded into its expanded configuration by compressing the accordion-like portion of the device. In some embodiments, a pre-formed tube with an accordion-like structure over a portion of its length is inserted in a relaxed (collapsed) configuration, giving the tube a minimum possible diameter. This tube has a cable running through it that is fixed to a distal end portion of the tube and extends past the proximal end portion of the tube to the outside of the patient. Once the tube is positioned on the rim of the endplate, the proximal end of the cable is pulled, thereby tensioning the cable and causing the accordion portion of the tube to become shorter in length but larger in diameter.

An implant including first and second end plates, each of which defines at least one anterior ramped surface and at least one posterior ramped surface. A posterior actuator is positioned between the first and second end plates and has guiding ramp surfaces which correspond with the posterior ramped surfaces. An anterior actuator is positioned between the first and second end plates and guiding ramp surfaces which correspond with the anterior ramped surfaces. An actuator assembly extends between the posterior actuator and the anterior actuator and is configured to selectively move the posterior actuator and the anterior actuator simultaneously, move posterior actuator independently of the anterior actuator, or move the anterior actuator independently of the posterior actuator.

Intervertebral devices and systems, and methods of their use, are disclosed having configurations suitable for placement between two adjacent vertebrae, replacing the functionality of the disc therebetween. Intervertebral devices and systems contemplated herein are implantable devices intended for replacement of a vertebral disc, which may have deteriorated due to disease for example. The intervertebral devices and systems are configured to allow for ample placement of therapeutic agents therein, including bone growth enhancement material, which may lead to better fusion between adjacent vertebral bones. The intervertebral devices and systems are configured for use in minimally invasive procedures, if desired.

An expandable vertebral body device, system, instrument, and methods of assembly and using the device, system, and instrument are disclosed. The vertebral body device includes a body with a first end and a second end, a first rotating member rotatably coupled to the first end, a second rotating member rotatably coupled to the second end, a first extension member moveably coupled to the first end, and a second extension member moveably coupled to the second end. The expandable cage system comprises a vertebral body device and an insertion instrument. Methods for assembling and using the vertebral body device and instrument are also disclosed.

Expandable fusion devices, systems, and methods thereof. The expandable implant may include first and second lateral legs and link plates pivotably joined between them. The lateral legs may include upper and lower endplates configured to engage adjacent vertebrae, an actuator assembly including a rotatable actuator having a shaft and a rotatable nut, and driving ramps positioned along the shaft of the actuator. The actuator assembly may cause independent movement of one or more of the driving ramps, thereby causing an expansion in height of the upper and lower endplates of the lateral legs and passive expansion of the connected link plates.

An implant for restoring height of a vertebral body. The implant includes upper and lower plates configured to be moved away from one another in the craniocaudal direction. A first support and a second support are arranged to crisscross in a proximal-to-distal direction to facilitate increased expansion of the implant, and a third support and a fourth support may be arranged to crisscross in the proximal-to-distal direction. Certain supports may be laterally spaced from one another to define a void space for receiving a retaining element. An upper support fork may include a first pair of supports arranged in a V-shaped configuration and converge at an apex that is coupled to an underside of the upper plate. A lower support fork may include a second pair of supports arranged in a V-shaped configuration and converge at another apex that is coupled to an upper side of the lower plate.