A resection guide includes a first body portion and a second body portion. The first body portion has a first bone engagement structure and defines a first plurality of holes. The second body portion has a second bone engagement structure and defines a second plurality of holes. The first body portion and the second body portion are operable to separate a first anatomical structure of a patient and a second anatomical structure of the patient. A cutting guide defines at least one guide aperture that is operable for guiding a cutting tool for use in resecting a portion of the second anatomical structure of the patient. The cutting guide is positionable relative to the first body portion.

A driving instrument for adjusting a spinal implant includes an outer shaft having a distal end configured to actuate a proximal adjustment assembly of a spinal implant, and an inner shaft having a distal end configured to actuate a distal adjustment assembly of the spinal implant. The inner shaft is disposed within the outer shaft, with a proximal end of the inner shaft extending proximally from the outer shaft. The proximal end is configured to be rotated such that rotation of the inner shaft results in simultaneous rotation of the inner and outer shafts, with rotation of the outer shaft ceasing at a first value of resistance associated with the proximal adjustment assembly and rotation of the inner shaft ceasing at a second value of resistance associated with the distal adjustment assembly such that cessation of rotation of the inner shaft is independent from cessation of rotation of the outer shaft.

Disclosed are a fusion cage for a spinal surgery and a clamping device thereof. The fusion cage comprises a fusion cage body (1) and a triangular screw plate (2). A limiting groove (12) fit with the clamping device is provided at a rear end surface of the fusion cage body (1), the fusion cage body (1) is hinged with the screw plate (2), and each of three corners of the screw plate (2) is provided with a screw hole (23). The clamping device comprises two clamping rods (4) which are fit with each other, and a front end of each clamping rod (4) is provided with a clamping head (41), wherein each of face-to-face sides of the clamping heads (41) is provided with a limiting protrusion (42), a front end of each clamping head (41) is capable of being inserted into the limiting groove (12) of the fusion cage body (1), and the limiting protrusion (42) is capable of being clamped at a front side surface of the screw plate (2). The fusion cage and the clamping device can easily fit with each other and are convenient to use, so as to enable the surgical operation to be more convenient, accurate and safe.

An insertion instrument for inserting an implant includes an elongated main body having a proximal handle and a distal portion that selectively couples to the implant. A plunger is slidably engaged in a central passage of the elongated main body configured to fix the implant to the elongated main body by selectively filling the central passage within the distal portion. A hex nut driver is concentrically located about the plunger and elongated main body to deploy an actuation plunger of the implant. The proximal handle portion of the main body includes a staggered path therethrough for accepting a tab of the plunger therein. Advancement and retraction of the plunger tab within the staggered path alternates the insertion instrument between an unlocked position configured to mount the implant on the distal portion of the elongated main body, a locked position configured to lock the implant on the distal portion, and a deployed position configured to secure the implant.

Spinal spacing implants, spinal spacer assembly, expander and insertion instruments, kits and methods of assembly and use are disclosed. The spinal implant replacement instrument kit including a distraction instrument, a spacer inserter, and a spinal implant. A distraction instrument includes a first inserter member, a second inserter member, a first arm coupled to the first inserter member, a second arm coupled to the second inserter member, a distraction system coupled to the first arm and second arm, a first handle coupled to the first arm and the distraction system, and a second handle coupled to the second arm and the distraction system. Spinal spacing implants, spinal spacer assemblies, and methods of assembling and using the implants assemblies, and instruments are also disclosed.

An insertion instrument for expandable spinal implants includes an elongate member, a shuttle, and a worm gear. The elongate member includes a handle portion of a proximal end and an end effector on a distal end, wherein the end effector is configured to be releasably engaged to an expandable spinal implant. The shuttle is slidably disposed within a cavity defined within the end effector and includes a wedged shaped distal end configured to engage an expandable spinal implant. The worm gear is rotatably disposed within the cavity defined in the end effector and is in mechanical communication with the shuttle, such that rotation of the worm gear effectuates movement of the shuttle. Distal movement of the shuttle effectuates articulation of an expandable spinal implant. A method of performing surgery is also disclosed.

Embodiments are directed to spinal treatments and, more particularly, to a trial inserter tool compatible with detachable trial heads for use in spinal surgery. In a preferred embodiment, the present invention provides a system for sizing an implant to be used in posterior lumbar interbody fusion surgery. The system may comprise a trial inserter tool, wherein the trial inserter tool comprises: a body, wherein the body is an elongated tubular, wherein the body comprises a first end and a second end; an actuation device, wherein the actuation device is disposed on the body between the first end and the second end; and a hooked support member that extends from the second end of the body; and a trial head disposable on the hooked support member.

A method of inserting and positioning an intervertebral spacer is provided. The spacer includes a longitudinal axis, an on-axis interface coincident with or parallel to the longitudinal axis, and an off-axis interface angled to the longitudinal axis. The spacer's front end may be curved. The method may include inserting the spacer into the disc space utilizing a tool to engage an on-axis interface and then to engage one or more of the off-axis interfaces, which may be used for further modification of the spacer. The tool is moved substantially along a single insertion direction, which may be substantially parallel to a posterior-anterior axis of the disc space. The method may result in the longitudinal axis of the spacer being perpendicular to the insertion direction, or substantially parallel to a medial-lateral axis of the disc space. The spacer may also be positioned in an anterior aspect of the disc space.

Anchoring devices, anchoring systems for intervertebral implants, intervertebral implants, and instruments and methods for implanting implants are disclosed. In preferred configurations, these various objects share the feature of comprising or cooperating with an anchoring device having a body comprising at least one curved plate elongated along a longitudinal axis, designed to be inserted through a passage crossing at least a part of implant, in order to penetrate into at least one vertebral endplate and attach implant onto this vertebral endplate by means of at least one stop retaining the implant, characterized in that the body comprises at least one longitudinal rib on at least a part of at least one of its faces, said rib being designed to cooperate with a groove made in passage of implant. In some preferred configurations, anchoring device comprises withdrawal stops or latches, and/or means for withdrawing the anchor from an inserted position.

An expandable prosthetic implant for engagement between vertebrae includes a first member having a first end, a second end, a plurality of extensions and a hollow interior portion extending from the first end to the second end, wherein the plurality of extensions extend from the first end to the second end. A second member includes a first end, a second end, a hollow interior portion extending from the first end to the second end, and a plurality of extensions extending from the second end to the first end. The plurality extensions of the first member are configured to coaxially interdigitate with the second member, and the plurality of extensions of the second member are configured to coaxially interdigitate with the first member. The first member of the implant is moveable relative to the second member along a longitudinal axis.