A dilation introducer for orthopedic surgery is provided for minimally invasive access for insertion of an intervertebral implant. The dilation introducer may be used to provide an access position through Kambin's triangle from a posterolateral approach. A first dilator tube with a first longitudinal axis is provided. A second dilator tube may be introduced over the first, advanced along a second longitudinal axis parallel to but offset from the first. A third dilator tube may be introduced over the second, advanced along a third longitudinal axis parallel to but offset from both the first and the second. An access cannula may be introduced over the third dilator tube. With the first, second, and third dilator tubes removed, surgical instruments may pass through the access cannula to operate on an intervertebral disc and/or insert an intervertebral implant.

A spinal interbody implant includes a shaft extending along and rotatable about a central axis. The shaft includes a first threaded region. The implant further includes a first link having a first end with first gear teeth. The first end of the first link is fixed at a first point relative to the central axis such that the first gear teeth engage the first threaded region.

The present disclosure relates to an expandable interbody that includes superior and inferior shells enclosing a control mechanism that includes interlocking proximal and distal cages as well as an adjustment screw that longitudinally translates the distal cage relative to the proximal cage and thereby expands interbody by pushing apart the distal ends of the superior and inferior shells.

An adjustable orthopedic implant can include a neck assembly, a stem assembly, and a drive assembly having a first portion coupled to the neck assembly and a second portion coupled to the stem assembly. The drive assembly can include an actuator configured to rotate in response to the actuation signal, and a threaded rod coupled to the actuator and configured to rotate in response to rotation of the actuator. The threaded rod can engage a threaded receptacle of the stem assembly such that rotation of the threaded rod in a first direction urges the neck assembly and the stem assembly closer together, and rotation of the threaded rod in a second, opposite direction urges the neck assembly and the stem assembly further apart.

Proposed is a vertebral cage including a body which is inserted between a vertebra and a neighboring vertebra, and is provided with a space part that can be filled with bone powder; a blade which is rotatably provided on an inner side surface of the body. The cage also includes a locking means which fixes the blade, which has or has not been rotated on the body, on the inner side surface of the body, wherein the locking means comprises fixing protrusions and groove parts which are provided on mutually facing surfaces of the body and the blade, and coupled to each other.

An interbody system including an implant and a tool for inserting and expanding the medical implant and locking the implant in place is disclosed. The medical implant may include an expandable body defined by a superior endplate and an inferior endplate that are hingedly coupled and may be expanded and lordosed. The superior and inferior endplate may include radially disposed and opposed surfaces that mate and/or directly contact each other when a locking screw is threaded through a screw aperture. The implant may include a threaded breakoff screw disposed in the threaded screw aperture and movable between a locked position and an unlocked position, for example. In the locked position, the threaded locking screw may urge the distal engagement surface of the first core into direct contact with the proximal engagement surface of the second core. When broken, the breakoff screw may comprise a recessed fracture surface.

An expandable implant may include an expandable body defined by a superior endplate and an inferior endplate that are hingedly coupled and may be expanded and lordosed by an external surgical tool. The superior endplate may include a first core having a distal engagement surface and the inferior endplate may a second core having a proximal engagement surface and a threaded screw aperture. The implant may include a threaded locking screw disposed in the threaded screw aperture and movable between a locked position and an unlocked position, for example. In the locked position, the threaded locking screw may urge the distal engagement surface of the first core into direct contact with the proximal engagement surface of the second core. The implant may include a pair of mounting tangs that may be sheared off and/or recesses. The locking screw may be a break-off screw.

An expandable implant having superior and inferior endplates disposed on opposite sides of a core is disclosed. The superior endplate may include a first screw engagement surface disposed on a proximal end thereof and the inferior endplate may include a second screw engagement surface disposed on a proximal end thereof. A pin may extend through corresponding pin apertures of the superior endplate, the inferior endplate, and the core. In various embodiments, the superior endplate and inferior endplate are hingedly connected to the core via the pin. The implant may include a locking screw movable between a locked position and an unlocked position. In the locked position, the locking screw may urge an engagement surface of the superior endplate and inferior endplate such that corresponding interior surfaces of the superior and inferior endplates frictionally engage against a corresponding exterior surface of the core.

Interbody fusion devices, interbody fusion device systems, insertion tools, methods for assembling an interbody fusion device, and methods a method for inserting a medical device between two vertebral bodies are disclosed. The interbody fusion device includes a body member with a pivot cylinder, a superior member with a pivot channel that is configured to engage the pivot cylinder, and a movement mechanism for moving the superior member relative to the body member. The interbody fusion device systems may include an interbody fusion device and an insertion tool. Also disclosed is a method of assembling an interbody fusion device. In addition, a method for inserting a medical device between two vertebral bodies in a spine is disclosed.

An implantable orthopedic support device and methods of using the device are disclosed. The device can have rigid structural components that can translate longitudinally with respect to each other, and in so doing can change the vertical height of the device. The structural components can be driven by a drivescrew mechanism to change the vertical height of the device.