Abstract: A spinal fixation system comprising at least one fastener having a fastener head at a proximal end and at least one body. The body comprises a rod receiving channel for receiving a fixation rod, a pressure cap for engaging the fastener head, and a fastener head receiving chamber for retaining the fastener head within the body. The fastener head receiving chamber allows for multi-axial movement of the body in relation to the fastener when the pressure cap is disengaged from the fastener head. The body is secured in a mono-axial position in relation to the fastener when the pressure cap is biased against the fastener head.

Abstract: A composite interbody device for use with spinal fusion surgery is described herein. The composite interbody device comprises a central body made from a radiolucent biocompatible polymer (e.g., PEEK or UHMWPE) and metallic plates, which are placed at the superior and inferior surfaces of the central body. The metallic plates are comprised of an end plate that is adjacent to a vertebral body and an intermediate plate that is adjacent to the central body. The end plates may have one or more arrays of apertures to facilitate bone growth into the end plates to secure the interbody device within the intervertebral space. The intermediate plates may also have one or more arrays of apertures to allow the central body to bond to the end plates through compression molding, injection molding, and/or heat molding.

Abstract: A pedicle screw with reverse spiral cut that allows for increased loading on a bone and increased osteointegration through automatic and self-managed expansion after the bone screw is inserted into the bone. The bone screw may be a fixation device comprising an elongated body having proximal and distal ends, said elongated body including an outer surface adapted to penetrate and anchor within a bone, and a head affixed to the distal end of the elongated body and adapted to receive a drive component, wherein the outer surface of the elongated body comprises threads extending from the outer surface in a first direction, and further wherein at least a portion of the outer surface of the elongated body comprises a reverse spiral cut into the outer surface in a second direction.

Abstract: A pedicle screw with reverse spiral cut that allows for increased loading on a bone and increased osteointegration through automatic and self-managed expansion after the bone screw is inserted into the bone. The bone screw may be a fixation device comprising an elongated body having proximal and distal ends, said elongated body including an outer surface adapted to penetrate and anchor within a bone, and a head affixed to the distal end of the elongated body and adapted to receive a drive component, wherein the outer surface of the elongated body comprises threads extending from the outer surface in a first direction, and further wherein at least a portion of the outer surface of the elongated body comprises a reverse spiral cut into the outer surface in a second direction.

Abstract: The present disclosure relates, according to some embodiments, to translational pedicle screw systems. A translational pedicle screw system may comprise a bone screw secured within a saddle. Different mechanisms may provide for translational movement of the saddle relative to the bone screw. In some embodiments, a saddle may comprise an elongated distal channel configured to provide a translational motion of a bone screw head disposed therein. In some embodiments, a saddle may comprise a discoidal recess configured to receive a corresponding discoidal section of a bone screw. The discoidal recess and the discoidal section may allow for a rotational offset of the saddle relative to the bone screw. In some embodiments, a proximal portion of a bone screw may comprise an attachment section configured to engage with a removable bone screw head. The removable bone screw head may translate laterally along the attachment section of the bone screw.

Abstract: A pedicle screw with reverse spiral cut that allows for increased loading on a bone and increased osteointegration through automatic and self-managed expansion after the bone screw is inserted into the bone. The bone screw may be a fixation device comprising an elongated body having proximal and distal ends, said elongated body including an outer surface adapted to penetrate and anchor within a bone, and a head affixed to the distal end of the elongated body and adapted to receive a drive component, wherein the outer surface of the elongated body comprises threads extending from the outer surface in a first direction, and further wherein at least a portion of the outer surface of the elongated body comprises a reverse spiral cut into the outer surface in a second direction.

Abstract: The present disclosure relates, according to some embodiments, to translational pedicle screw systems. A translational pedicle screw system may comprise a bone screw secured within a saddle. Different mechanisms may provide for translational movement of the saddle relative to the bone screw. In some embodiments, a saddle may comprise an elongated distal channel configured to provide a translational motion of a bone screw head disposed therein. In some embodiments, a saddle may comprise a discoidal recess configured to receive a corresponding discoidal section of a bone screw. The discoidal recess and the discoidal section may allow for a rotational offset of the saddle relative to the bone screw. In some embodiments, a proximal portion of a bone screw may comprise an attachment section configured to engage with a removable bone screw head. The removable bone screw head may translate laterally along the attachment section of the bone screw.

Abstract: A spinal fixation system comprising at least one fastener having a fastener head at a proximal end and at least one body. The body comprises a rod receiving channel for receiving a fixation rod, a pressure cap for engaging the fastener head, and a fastener head receiving chamber for retaining the fastener head within the body. The fastener head receiving chamber allows for multi-axial movement of the body in relation to the fastener when the pressure cap is disengaged from the fastener head. The body is secured in a mono-axial position in relation to the fastener when the pressure cap is biased against the fastener head.

Abstract: A spinal fixation system comprising at least one fastener having a fastener head at a proximal end and at least one body. The body comprises a rod receiving channel for receiving a fixation rod, a pressure cap for engaging the fastener head, and a fastener head receiving chamber for retaining the fastener head within the body. The fastener head receiving chamber allows for multi-axial movement of the body in relation to the fastener when the pressure cap is disengaged from the fastener head. The body is secured in a mono-axial position in relation to the fastener when the pressure cap is biased against the fastener head.

Abstract: A composite interbody device for use with spinal fusion surgery is described herein. The composite interbody device comprises a central body made from a radiolucent biocompatible polymer (e.g., PEEK or UHMWPE) and metallic plates, which are placed at the superior and inferior surfaces of the central body. The metallic plates are comprised of an end plate that is adjacent to a vertebral body and an intermediate plate that is adjacent to the central body. The end plates may have one or more arrays of apertures to facilitate bone growth into the end plates to secure the interbody device within the intervertebral space. The intermediate plates may also have one or more arrays of apertures to allow the central body to bond to the end plates through compression molding, injection molding, and/or heat molding.

Abstract: A pedicle screw with reverse spiral cut that allows for increased loading on a bone and increased osteointegration through automatic and self-managed expansion after the bone screw is inserted into the bone. The bone screw may be a fixation device comprising an elongated body having proximal and distal ends, said elongated body including an outer surface adapted to penetrate and anchor within a bone, and a head affixed to the distal end of the elongated body and adapted to receive a drive component, wherein the outer surface of the elongated body comprises threads extending from the outer surface in a first direction, and further wherein at least a portion of the outer surface of the elongated body comprises a reverse spiral cut into the outer surface in a second direction.

Abstract: A spinal rod connector apparatus for use with spinal implantation rods and methods of securing implantation rods using a cross-braced bilateral spinal rod connector apparatus. The spinal rod connector apparatus comprises a central member having two or more extension legs. The extension legs can be of varying lengths and disposed at varying angles with respect to the monolithic central member, depending upon physiological sizing requirements. Attached to each extension leg is a connecting member capable of connecting to a bilateral spinal rod construct.

Abstract: A locking device for locking an expandable support device, where the locking device includes a spring device integral with the expandable support device, and the spring device includes an end portion, a first flexible arm, and a second flexible arm. A first aperture of the spring device is adapted to position the fastener associated with the first rotational position and a second aperture of the spring device is adapted to position the fastener associated with the second rotational position. The first flexible arm and second flexible arm are adapted to flex outward and allow passage of the fastener head when an inward pressure is applied to the fastener positioned in the second aperture. The first flexible arm and the second flexible arms are adapted to collapse to their unflexed position after the fastener head has completed passage through the spring device, such that the first flexible arm and the second flexible arm are adapted to cover the fastener head and prevent the fastener from backing out.

Abstract: A locking device for locking an expandable support device, where the locking device includes a spring device integral with the expandable support device, and the spring device includes an end portion, a first flexible arm, and a second flexible arm. A first aperture of the spring device is adapted to position the fastener associated with the first rotational position and a second aperture of the spring device is adapted to position the fastener associated with the second rotational position. The first flexible arm and second flexible arm are adapted to flex outward and allow passage of the fastener head when an inward pressure is applied to the fastener positioned in the second aperture. The first flexible arm and the second flexible arms are adapted to collapse to their unflexed position after the fastener head has completed passage through the spring device, such that the first flexible arm and the second flexible arm are adapted to cover the fastener head and prevent the fastener from backing out.

Abstract: Various embodiments of the present invention relate to an apparatus for vertebral body replacement and methods associated therewith. In one embodiment, a vertebral body replacement apparatus may be used to correct and stabilize the spine (e.g., the thoracolumbar spine (T1-L5)). In another embodiment, a vertebral body (e.g., a diseased and/or damaged vertebral body) that has been resected or excised (e.g., for the treatment of a tumor or trauma) may be replaced (with the height of the resected or excised vertebral body being substantially replaced and restored by the apparatus of the present invention).