Abstract: An expandable implant includes a lower support; an upper support pivotally coupled to the lower support and including a control channel; and a control assembly. The control assembly includes a control shaft coupled to the lower support and a control member coupled to the control shaft and configured to move along the control shaft. The control member includes a base member and a pivot member pivotally coupled to the base member, the pivot member configured to move within the control channel. Movement of the control member along the control shaft causes the pivot member to pivot relative to the base member, and the upper support to pivot relative to the lower support.

Abstract: A kit for installing a spine implant includes an installation tool and a spine implant. The spine implant includes a body having a cavity extending through the body, a channel extending a first length along the first lateral side, a bore in communication with the cavity, a superior blade guide, and an inferior blade guide. The body also includes a first blade situated on the superior blade guide and movable along the superior blade guide after implantation of the, and a second blade situated on the inferior blade movable along the inferior blade guide after implantation of the body. The installation tool includes a handle, a hollow shaft connected to the handle, a pusher rod configured to extend through the hollow shaft and extend the first and second blades, and a graft rod configured to extend through the hollow shaft and introduce graft material into the spine implant.

Abstract: A spine implant for receipt between and fastened to a lower vertebra and an adjacent upper vertebra is characterized by an expandable cage and an expandable plate attached to the expandable cage. When the expandable cage is expanded, both the expandable cage and the expandable plate expand together at a uniform rate of movement. Engagement features of the expandable cage cooperate with engagement features of the expandable plate such that expansion of the expandable cage carries the expandable plate along during its expansion. The engagement features of the expandable cage may be configured as notches, cavities, or recessed pockets, while the engagement features of the expandable plate may be configured as tangs, flanges, or protuberances styled to be received by the configured notches of the expandable cage. Cam locks on the expandable plate help bone fastener backout.

Abstract: A spine implant for use in spinal facet joint fixation or to connect distracted portions of a vertebral lamina in a laminoplasty through use or non-use of a spacer. One or two bone screw plates are angularly adjustable relative to a base plate for attachment by bone screws to vertebral bone. One form of the spine implant has a base plate, a first plate pivotally connected to the base plate for angular adjustment relative to the base plate and configured to hold one or two bone screws for attaching the first plate to first vertebral bone, and a second plate configured to hold two bone screws for attaching the second plate to second vertebral bone. The second plate may be pivotally connected to the body for angular adjustment of the second plate relative to the base plate or fixed to the base plate at a predetermined angle.

Abstract: An expandable implant includes a base member, an adjustable member adjustably coupled to the base member and movable between a first, collapsed position, and a second, expanded position, a control assembly including a control shaft, wherein manipulation of the control shaft causes relative movement of the adjustable member relative to the base member, wherein the base member and the adjustable member are coupled together at least in part via the control assembly such that the control shaft is rotationally fixed relative to the base member and the adjustable member, and the adjustable member is resiliently compressible relative to the base member.

Abstract: A modular polyaxial bone screw includes a poly-axial bone screw, a polyaxial tulip head, and a collet disposed within the tulip head, the collet interacting with the bone screw and tulip head providing an interference fit with the bone screw head to lock orientation of the tulip head on and relative to the bone screw. Inner configurations of the tulip head interact with outer configurations of the collet to lock axial and/or rotational position of the collet within and relative to the tulip head, and thus about the bone screw head. The collet also has a resilient, tapered base with a plurality of slots in and about its end that allow the end to splay outwardly over and upon the head of the bone screw to create a snap or frictional interference fit between the splayed collet and the bone screw head when a spine rod is fixed in the tulip head.

Abstract: A steerable expandable implant including a base member, an adjustable member coupled to the base member, the adjustable member movable between a collapsed position and an expanded position, a pivot member rotatably received by the base member and configured to receive a tool such that the tool and the pivot member are rotatable relative to the base member between a first position and a second position, wherein the pivot member is translationally fixed relative to the base member, and a first control member received by the base member, wherein manipulation of the first control member causes the adjustable member to move between the collapsed position and the expanded position.

Abstract: An expandable implant includes a top support assembly defining an upper surface configured to engage a first portion of bone, a first central aperture extending from the upper surface to an interior of the implant, and a first grid structure surrounding the first central aperture; a bottom support assembly defining a lower surface configured to engage a second portion of bone, a second central aperture extending from the lower surface to the interior, and a second grid structure surrounding the second central aperture; and a control assembly coupled to the top support assembly and the bottom support assembly and configured to control relative movement between the top support assembly and the bottom support assembly between a collapsed position and an expanded position.

Abstract: A spinal interbody device includes a base link comprising a first end and a second end, the base link including a cutout extending through the base link between the first end and the second end; a linkage including a first link having a first end coupled to the first end of the base link and a second end, the first link including a first aperture extending through the first link and defining a first longitudinal axis; and a second link having a first end coupled to the second end of the first link and a second end coupled to the second end of the base link, the second link including a second aperture extending through the second link and defining a second longitudinal axis. The base link and the first and second links define top and bottom surfaces configured to engage adjacent portions of bone, and first and second sides extending between the top and bottom surfaces.

Abstract: A spine fixation assembly has a polyaxial spine screw rod holder for a first spine rod and a second rod holder for a second spine rod, the second rod holder is linked to the polyaxial spine screw rod holder via a connector, the connector extending radially outward from the polyaxial spine screw rod holder such that the second rod holder is spatially separated from and offset relative to the polyaxial spine screw rod holder. The polyaxial spine screw rod holder defines a first rod seat that holds the first spine rod. The first spine rod has a first longitudinal axis. The second rod holder defines a second rod seat that holds a second spine rod. The second rod has a second longitudinal axis. The second rod holder is oriented relative to the polyaxial spine screw rod holder by the connector at an offset (angle).

Abstract: An expandable implant includes a lower support; an upper support pivotally coupled to the lower support and including a control channel; and a control assembly. The control assembly includes a control shaft coupled to the lower support and a control member coupled to the control shaft and configured to move along the control shaft. The control member includes a base member and a pivot member pivotally coupled to the base member, the pivot member configured to move within the control channel. Movement of the control member along the control shaft causes the pivot member to pivot relative to the base member, and the upper support to pivot relative to the lower support.

Abstract: An implant and method for spinal facet joint stabilization uses a wedge and plate adapted to accept prongs of a surgical instrument for installing the implant into a posterior spinal facet joint. The wedge has an anterior end with a threaded bore. A notch in each lateral side of the plate aligns with a groove in each lateral side of the wedge. Each notch and groove pair receives a prong of the surgical instrument to hold the wedge and plate during implantation. A superior tube of the surgical instrument supports a superior rod having an end configured for installing a bone screw attaching the plate to the superior vertebra of the spinal facet joint. An inferior tube of the surgical instrument supports an inferior rod having an end configured to attach to the threaded bore of the wedge along with the plate during introduction of the implant into the spinal facet joint, and installing the set screw to attach the plate to the wedge.

Abstract: A spine plate implant utilizes cam lock setscrews to retain bone screws in the plate once implanted. A cam lock setscrew is received in a setscrew pocket adjacent a configured bone screw bore of the plate and is configured to allow a bone screw to be received in the plate when in an unlocked rotational position, and to retain the received bone screw when in a locked rotational position. The bone screw may include a tang that allows engagement with external teeth of the cam lock setscrew when the cam lock setscrew is rotated into the locked position. Once the cam lock setscrew is in the locked position, the bone screw is inhibited from backing out of the bone screw bore. When the cam lock setscrew is in the unlocked position, a flat of the cam lock setscrew is adjacent the bone screw tang so the bone screw may be removed.

Abstract: A spine implant for a TLIF surgical procedure is configured to be guided into place during implantation in conjunction with a complementary insertion instrument. The cage of the implant is constrained to a limited range of rotation about a pivoting post carried by the cage. The insertion instrument is configured to hold the post while controllably rotating the cage relative to the post in order to angularly position the implant during implantation. Range of rotational motion is controlled by the configuration of an opening in and end of the cage and a groove in the pivot post. A retaining pin of the implant extends from the cage into the groove of the post to rotationally connect the cage to the post.

Abstract: An implant includes a first support, a second support rotatably coupled to the first support along a distal end of the implant, and a control assembly configured to move the implant between at least a first, collapsed orientation and a second, expanded orientation, the control assembly includes a control driver coupled to the first support and comprising a head and a shaft, the control driver configured to control relative movement between the first support and the second support, a control member configured to move along the shaft of the control driver, and a first linkage hingedly coupled to the control member and the second support, wherein movement of the control member causes the first support to move relative to the second support.

Abstract: Provided are systems, apparatuses, and methods for performing minimally invasive spinal surgery. For example, provided is a minimally invasive surgical apparatus for securing a pedicle screw or lateral mass screw to a vertebral lateral mass or pedicle. The example apparatus includes an instrument portal, a pedicle screw or lateral mass screw reducer, an anchor pin receiving chamber, an anchor pin, and a handle.

Abstract: An expandable implant includes a top support configured to engage a first portion of vertebral bone, a bottom support configured to engage a second portion of vertebral bone, and a control assembly coupled to the top support and the bottom support and configured to control relative movement between the top support and the bottom support. The control assembly includes a control member including a head and a body portion. The head includes a recess and the body portion includes at least one access port in fluid communication with the recess to enable delivery of fluid to an interior of the implant via the recess and at least one access port.

Abstract: A steerable expandable implant including a base member, an adjustable member coupled to the base member, the adjustable member movable between a collapsed position and an expanded position, a pivot member rotatably received by the base member and configured to receive a tool such that the tool and the pivot member are rotatable relative to the base member between a first position and a second position, wherein the pivot member is translationally fixed relative to the base member, and a first control member received by the base member, wherein manipulation of the first control member causes the adjustable member to move between the collapsed position and the expanded position.

Abstract: A retractor assembly includes a base, a first side assembly, a second side assembly, and a medial arm assembly. The first side assembly is coupled to a first side of the base and translates relative to the base along a first direction. The second side assembly is coupled to a second side of the base and configured to translate relative to the base along the first direction. The medial arm assembly is coupled to the base and can extend in an extension direction and retract in a retraction direction. The extension direction is opposite the retraction direction. The extension direction and the retraction direction are perpendicular to the first direction. The medial arm assembly includes a body, and a blade assembly. The blade assembly includes a receiving portion and a medial blade. The receiving portion and the medial blade are rotatably interfaced via a ball and a socket.

Abstract: An expandable implant is disclosed. The expandable implant includes a base member having a top surface and a bottom surface opposite the top surface, and an adjustable member adjustably coupled to the base member and movable between a first, collapsed position, and a second, expanded position. The adjustable member has a top surface and a bottom surface opposite the top surface. The top surface of the adjustable member and the bottom surface of the base member form a first angle while the adjustable member is in the first, collapsed position, and the top surface of the adjustable member and the bottom surface of the base member form a second angle while the adjustable member is in the second, expanded position. The first angle is different from the second angle.