An expandable vertebral body implant, and methods of assembly and using the implant. The vertebral body implant includes a body with a first end and a second end, a rotating member rotatably coupled to the first end of the body, wherein an end includes a plurality of first notches inset into the rotating member, an extension member moveably coupled to the rotating member, and a locking member positioned on an interior of the body. Methods for assembling and using the vertebral body implant are also disclosed.

An intervertebral implant inserter, comprising: a) a elongated central body having a distal end, a proximal end, an outer surface, and a longitudinal throughbore therethrough, b) upper and lower blades, each blade having a distal end portion and a base portion, the base portion of each blade pivotally coupled to the elongated central body, c) a shaft having a longitudinal axis, wherein the shaft is advanceable within the throughbore and rotatable about the longitudinal axis, the shaft having a distal end forming a pusher having an acicular transverse cross-section, d) upper and lower endplates respectively detachably connected to the distal end portion of a respective blade.

A spinal implant is provided including an upper surface, a lower surface, a front surface and a back surface, two side surfaces extending between the upper surface and the lower surface, the two side surfaces extending between the front surface and the back surface and an opening positioned closer to the back surface than the front surface. The opening is provided to contain graft material that spans between a cortical rim of the upper vertebral body and the cortical rim of the lower vertebral body. The method includes packing the opening with graft material, wherein the graft, material spans between the decorticated cortical rim of the upper vertebral body and the decorticated cortical rim of the lower vertebral body.

A personalized intervertebral disc replacement for a subject includes a first element adapted to contact a first vertebra in the spine of the subject, a second element adapted to contact a second vertebra adjacent to the first vertebra in the spine of the subject, and a set of links coupling the first and second elements, the links arranged as a passive parallel mechanism, each of the links having a predetermined stiffness and length, and at least some of the links being oriented obliquely to a direction perpendicular to either of the first and second elements.

In an intervertebral implant having at least two upper and two lower contact bodies that have contact surfaces. An actuator has a threaded body which has an extension axis and is provided with opposite-handed threads arranged one behind the other. Wedges sit on the threaded body in an axially moveable manner and can be moved along the threaded body by rotating the same. Ramps of at least one ramp body of a wedge engage at least with counter-surfaces of at least some of the contact bodies and extend toward one another at a finite angle of less than 90°. The wedges are double wedges having two ramp bodies arranged one behind the other, and the ramps of one ramp body are oriented differently to the ramps of the other ramp body. The ramps of the first ramp body engage directly with the contact bodies laterally.

An intervertebral fusion cage is disclosed. An intervertebral fusion cage according to an embodiment of the present invention comprises: a body including a receiving part of which upper and lower portions are open, an upper guide part, and a lower guide part; a moving member disposed in the receiving part; a screw which is screw-coupled to the body and moves forwards or backwards relative to the body integrally with the moving member when rotating; an upper plate which has a guided part guided by the upper guide part and is disposed above the body while being engaged with the moving member; and a lower plate which has a guided part guided by the lower guide part and is disposed under the body while being engaged with the moving member.

An expandable interbody spacer for placement between adjacent vertebrae having two or more upper and lower endplates and lateral expansion wedges configured to couple a drive means to expand both a height and a width of the expandable interbody spacer from a collapsed state to an expanded state.

An expandable, adjustable inter-body fusion device is presented. The inter-body fusion device can have a first plate, a second plate, and an insert positioned substantially therebetween the first plate and the second plate. The first plate, the second plate, and the insert define an interior cavity. Moving the insert longitudinally with respect to the first and second plates increases or decreases the distance of the first plate with respect to the second plate, effectively expanding the inter-body fusion device and increasing the volume of the interior cavity. The angle between the first plate and the second plate is selectively adjustable.

The present disclosure provides for spinal implants configured for lateral insertion techniques deployable between a contracted position and an expanded position. The spinal implant may include a first endplate and a second endplate, each having a plurality of guide walls and inclined ramps. The spinal implant may further include a moving mechanism having first and second trolleys configured to act against the first and second plurality of ramps. The moving mechanism may further include a first set screw and a second set screw opposite the first set screw. The moving mechanism may be configured to operably adjust a spacing between the first and second endplates upon simultaneous rotation of the first and second set screws along a rotation axis, and may also operably adjust an angle of inclination between the first and second endplates upon rotating the first set screw or second set screw along the rotation axis.

An expandable interbody spacer that is delivered in the anterior approach with adjustable height and end plate angulation (lordosis). The expandable interbody spacer is configured to have an initial collapsed state having a first height suitable for being inserted into an intervertebral space defined by a pair of adjacent vertebrae, and an expanded state having a second height that is greater than the first height. The expandable interbody spacer may be expanded from the initial collapsed state to the expanded state in-situ. The expanded state increases the distance between the adjacent vertebrae and provides support to the adjacent vertebrae while bone fusion occurs and also provides rigid support between the adjacent vertebrae that withstands compressive forces. By inserting the expandable interbody spacer into the intervertebral space in the initial collapsed state, it is possible to perform the surgery percutaneously with minimal disruption to tissues surrounding the surgical site and intervening soft tissue structures.