Abstract: A treatment apparatus for a mixing device having a concentric barrel configuration. The treatment apparatus includes a manifold including an input end and an output end. The treatment apparatus also includes a conduit body having a manifold end and a nozzle end. The manifold end is connected to the output end of the manifold, and the conduit body includes at least one nozzle at the nozzle end of the conduit body opposite the manifold. At least one fluid pathway is formed between the input end of the manifold, the conduit body, and the at least one nozzle.

Abstract: The invention encompasses a bone screw for use in the human body including a shaft having a threaded region along at least a portion of its length and a screw head including a locking mechanism to secure the screw, for example to a bone plate. In certain embodiments, the thread has an outer diameter dimensioned to pass through the screw hole in the implant. The screw head is configured to cooperatively engage at least a portion of the screw hole of the implant so as to prevent the screw from coming out of the implant and avoided soft tissue damage and other complications associated with unintended screw removal.

Abstract: An intervertebral implant may include a superior exterior surface, an inferior exterior surface, a first exterior lateral surface, and a second exterior lateral surface. The first and second exterior lateral surfaces may be substantially transverse to the superior and inferior exterior surfaces. The implant may further include a first curved end wall at a first longitudinal extremity of the body. The first curved end wall may include a bore configured to receive a first shaft of a tool. Additionally, the implant may include a second curved end wall at a second longitudinal extremity of the body and an elongated slot extending from a portion of the first curved end wall to a portion of the first exterior lateral surface.

Abstract: A bone fixation system includes a bone fastener and a tower including a frangible or detachably linked distal section with a thread formed on an inner surface thereof, the tower having at least one flexible section and at least one rigid section to accommodate and/or mitigate tower interference and/or collision during surgical procedures. The distal section can desirably be separated and/or detached from the tower to function as a head locking unit of the bone fixation assembly, with the detached distal section capable of accommodating set screws, fixation rods and/or other spinal hardware.

Abstract: An intervertebral implant may include a superior exterior surface, an inferior exterior surface, a first exterior lateral surface, and a second exterior lateral surface. The first and second exterior lateral surfaces may be substantially transverse to the superior and inferior exterior surfaces. The implant may further include a first curved end wall at a first longitudinal extremity of the body. The first curved end wall may include a bore configured to receive a first shaft of a tool. Additionally, the implant may include a second curved end wall at a second longitudinal extremity of the body and an elongated slot extending from a portion of the first curved end wall to a portion of the first exterior lateral surface.

Abstract: Disclosed are settable bone cements incorporating silicon nitride in various forms as a component, including powders, granules, particulates, portions, layers and/or coatings of solids and/or particulates of silicon nitride and/or components thereof, that may be useful in joint and/or bone replacement implants used in spinal surgeries, dental surgeries and/or other orthopedic and/or general surgical procedures.

Abstract: A SI joint fusion system including a wedging cage. The SI joint fusion system may further comprise a fixation screw and/or an axial screw. The wedging cage is adapted to be positioned between the sacrum and the lilac bone (e.g., the sacroiliac joint), and the wedging cage is effective to receive one or more fixation or axial screws to fasten the wedging cage and secure the wedging cage to the adjacent pelvic bones to provide a combination effect of fusion and/or fixation.

Abstract: An orthopedic assembly is described that comprises an orthopedic device, an anchor, and a locking mechanism. The orthopedic device can be a plate member having an aperture that is configured to receive the anchor. The anchor can include a head, neck and shank portion. The head portion can include a plurality of arms separated by grooves that are capable of splaying. The assembly is configured such that when the locking mechanism is inserted into the head portion, this causes expansion of the arms of the head. This expansion locks and secures the anchor to the orthopedic device. Various instruments are provided that can deliver the locking mechanism to the anchor, and can provide impact to lock functionality.

Abstract: Disclosed are devices for the fixation and support of vertebrae, particularly spinal implant devices having adjustability in size, shape and/or configuration.

Abstract: A distractor device is disclosed that distracts and holds open an intralaminar space. The distractor device has a housing that includes a kickstand, an actuating bar that includes a foot, and an actuator that engages and drives the actuating bar, wherein the kickstand is configured to engage a first portion of a lamina on one side of the intralaminar space and the foot is configured to engage a second portion of the lamina on another side of the intralaminar space.

Abstract: Disclosed are devices, systems and/or methods for use in the surgical treatment of vertebrae and/or other bones, particularly implants and/or related devices comprising silicon nitride in some of all of the implant or device body, including portions, layers and/or surface coatings thereof, for use in spinal surgeries and/or other orthopedic procedures.

Abstract: A cervical spine spacer includes a spacer body configured to be disposed between adjacent cervical vertebrae in the cervical spine and to maintain a desired spacing between the adjacent cervical vertebrae. The cervical spine spacer also includes a channel passing completely through the spacer body from a first surface of the spacer body to a second surface of the spacer body and a fastener configured to pass through the channel. At least one of the first surface and the second surface is configured to contact one of the adjacent cervical vertebrae and the channel is sized to accommodate the fastener passing through the channel at a plurality of angles.

Abstract: Disclosed are devices and methods for use in the surgical treatment of vertebrae and/or other bones, particularly tools for cutting and/or removing soft and/or hard tissues.

Abstract: Disclosed are intervertebral devices for insertion between and/or adjacent to vertebrae of a patient, incorporating apertures for fastening devices which include fastener locking and/or retaining elements.

Abstract: Disclosed are devices for the fixation and support of vertebrae, particularly spinal implant devices supporting and/or securing removed vertebral bodies of the spine.

Abstract: Disclosed are improved orthopedic tools and methods for use during orthopedic surgical procedures, including joint arthroplasty and joint replacement procedures. More specifically, disclosed herein are improved apparatus for preparing bone and/or soft tissue of the spine and/or other regions for implantation of intervertebral implants.

Abstract: Disclosed are laminoplasty devices and systems, kits that include such laminoplasty devices or systems or components thereof; and methods of assembling and using such laminoplasty devices and systems. In particular, articulating laminoplasty devices are provided that allow lamina plates to be adjusted angularly and transitionally with respect to a cage connecting the lamina plates. Also provided are laminoplasty plates that are configured so as to be assembled with a bone graft housing, and which provide an opening configured to facilitate bone graft insertion into the housing. Further provided are expandable laminoplasty fixation systems that include a lateral mass plate, a lamina plate and a set screw that when screwed and unscrewed, allows one to contract and expand the plates with respect to one another.

Abstract: Disclosed are devices for the fixation and support of vertebrae, particularly adjustable spinal implant devices.

Abstract: A cervical spine spacer includes a spacer body configured to be disposed between adjacent cervical vertebrae in the cervical spine and to maintain a desired spacing between the adjacent cervical vertebrae. The cervical spine spacer also includes a channel passing completely through the spacer body from a first surface of the spacer body to a second surface of the spacer body and a fastener configured to pass through the channel. At least one of the first surface and the second surface is configured to contact one of the adjacent cervical vertebrae and the channel is sized to accommodate the fastener passing through the channel at a plurality of angles.

Abstract: An orthopedic assembly is described that comprises an orthopedic device, an anchor, and a locking mechanism. The orthopedic device can be a plate member having an aperture that is configured to receive the anchor. The anchor can include a head, neck and shank portion. The head portion can include a plurality of arms separated by grooves that are capable of splaying. The assembly is configured such that when the locking mechanism is inserted into the head portion, this causes expansion of the arms of the head. This expansion locks and secures the anchor to the orthopedic device. Various instruments are provided that can deliver the locking mechanism to the anchor, and can provide impact to lock functionality.