1033 results about "Spinal implant" patented technology

Apparatus and a method of inserting spinal implants is disclosed in which an intervertebral space is first distracted, a hollow sleeve having teeth at one end is then driven into the vertebrae adjacent that disc space. A drill is then passed through the hollow sleeve removing disc and bone in preparation for receiving the spinal implant which is then inserted through the sleeve. Apparatus and a method of inserting spinal implants is disclosed in which an intervertebral space is first distracted to restore the normal angular relationship of the vertebrae adjacent to that disc space. An extended outer sleeve having extended portions capable of maintaining the vertebrae distracted in their normal angular relationship is then driven into the vertebrae adjacent that disc space. A drill is then passed through the hollow sleeve removing disc and bone in preparation for receiving the spinal implant which is then inserted through the sleeve.

A spinal implant for intervertebral disc replacement. The implant is formed from two hemicylindrical elements, each engaging one of an adjacent pair of vertebrae. An articulating ball-and-socket joint between the two elements resists compression and lateral movement between the vertebra, but allows pivotal movement, thereby preserving mobility. Fusion chambers are provided for allowing bone ingrowth to fuse the elements to the vertebrae. Biocompatible, bioreabsorbable struts, shims, fillers and/or end caps are provided for temporary stabilization of the first and second hemicylindrical elements. Bone chips removed from the vertebrae during implantation or bone growth stimulators can be inserted into the fusion chamber or otherwise applied to the implant to enhance bone ingrowth.

One or more shaped axial bore extending from an accessed posterior or anterior target point are formed in the cephalad direction through vertebral bodies and intervening discs, if present, in general alignment with a visualized, trans-sacral axial instrumentation/fusion (TASIF) line in a minimally invasive, low trauma, manner. An anterior axial instrumentation/fusion line (AAIFL) or a posterior axial instrumentation/fusion line (PAIFL) that extends from the anterior or posterior target point, respectively, in the cephalad direction following the spinal curvature through one or more vertebral body is visualized by radiographic or fluoroscopic equipment. Preferably, curved anterior or posterior TASIF axial bores are formed in axial or parallel or diverging alignment with the visualized AAIFL or PAIFL, respectively, employing bore forming tools that can be manipulated from proximal portions thereof that are located outside the patient's body to adjust the curvature of the anterior or posterior TASIF axial bores as they are formed in the cephalad direction. Further bore enlarging tools are employed to enlarge one or more selected section of the anterior or posterior TASIF axial bore(s), e.g., the cephalad bore end or a disc space, so as to provide a recess therein that can be employed for various purposes, e.g., to provide anchoring surfaces for spinal implants inserted into the anterior or posterior TASIF axial bore(s).

An apparatus, method and system for treating spinal conditions by moving or spatially fixing at least one vertebra relative to another vertebra. The invention includes a link member the ends of which are configured to be secured to adjacent vertebrae and which are offset from a central portion of the link member. The link members can be in the form of a C-shaped or V-shaped rod or plate to form the offset. The offset provides increased bone volume that can be used for grafts or fusion. Attachment structure in the form of bone screws, bolts, or hook members are provided to secure the link members to respective vertebrae or other bones. A plurality of link members can be connected in chain-like fashion to connect multiple points on a plurality of vertebrae or other bones even though those points are nonlinear. In another aspect of the invention, a multi-directional attachment member is provided and may be used with the link members to form a spinal implant or external bone fixation system.

An articulating spinal implant for intervertebral disc replacement. The articulating spinal implant is formed from two elements, each engaging one of an adjacent pair of vertebra. Articulation features between the two elements resist compression and lateral movement between the vertebra, but allow the adjacent vertebra to articulate about an instantaneous axis of rotation.

A spinal implant may be used to stabilize a portion of a spine. The implant may promote bone growth between adjacent vertebrae that fuses the vertebrae together. An implant may include an opening through a height of a body of the implant. The body of the implant may include curved sides. A top and/or a bottom of the implant may include protrusions that contact and/or engage vertebral surfaces to prevent backout of the implant from the disc space. A variety of instruments may be used to prepare a disc space and insert an implant. The instruments may include, but are not limited to, a distractor, a rasp, and one or more guides. The implant and instruments may be supplied in an instrument kit.

An apparatus includes an elongate member having a portion configured to be deformed from a first configuration to a second configuration. In one variation, the apparatus includes an outer body, defining an interior region, and an inner body. A portion of the outer body is configured to be disposed between adjacent spinous processes. The inner body is disposed within the interior region of the outer body. A distal end portion of the inner body is coupled to a distal end portion of the outer body. A proximal end portion of the inner body configured to removably receive a tool to move the outer body between a collapsed configuration and an expanded configuration.

Methods and devices are provided for the explantation of spinal implants. A cutting tool may be extended into the spinal implant. The spinal implant may be cut into pieces and the pieces removed.

Disclosed herein are spinal implants particularly useful in interbody fusion surgery. One embodiment pertains to a plate configured to establish desired lordosis and/or disc height that may be implanted and secured to a superior and inferior vertebral body. The plate may be interlocked with a spacer component to form a single implant. Also disclosed is an anti-backout mechanism that helps prevent fixators from backing out upon securement of the plate in the spine. Kits comprising different sizes and inclination angles of components are disclosed, which can assist the surgeon in preoperatively assembling an implant to best fit in the surgical site of the patient.

A spinal implant for intervertebral disc replacement. The implant is formed from two hemicylindrical elements, each engaging one of an adjacent pair of vertebrae. An articulating ball-and-socket joint and/or rocker and channel between the two elements resists compression and lateral movement between the vertebra, but allows pivotal movement, thereby preserving mobility. Fusion chambers are provided for allowing bone ingrowth to fuse the elements to the vertebrae. Biocompatible, bioreabsorbable struts, shims, fillers and/or end caps are provided for temporary stabilization of the first and second hemicylindrical elements. Bone chips removed from the vertebrae during implantation or bone growth stimulators can be inserted into the fusion chamber or otherwise applied to the implant to enhance bone ingrowth.

An example device for the fixation and support of bone bodies includes a base member for implantation into a patient at a location between two bone bodies. The base member of the device includes an enclosed chamber for receiving fusion material and apertures for receiving bone fasteners that can be embedded into the adjacent bone bodies. The device further includes protrusions extending from the base member, wherein the protrusions are configured for engagement with one or more bone bodes upon implantation and for progressive penetration into at least one bone body over a period of time subsequent to the implantation.

A spinal implant including first spinal attachment member for attaching to a first spinal portion, second spinal attachment member for attaching to a second spinal portion, and a post-implantation variable dimension device disposed between the first and second spinal attachment members, which is operable after completing surgery in which said spinal implant was installed into a patient, to cause relative movement between the first and second spinal attachment members.

An instrumentation set may include insertion instruments for forming an implant between bone structures. The insertion instruments may include a spreader and a separator. The bone structures may be vertebrae. Implant members may be attached to the spreader and positioned between the bone structures. The separator may be inserted into the spreader to establish a desired separation distance between the implant members. Connectors may be inserted into the implant members to join the implant members together and form the implant. The insertion instruments may be removed. A seater may be used to set the position of the connectors relative to the implant members to inhibit disassembly of the implant.

Disclosed herein are modular spinal implants having components which are interlocked together to form a single implant. Specifically exemplified herein are implants that are sectioned along a longitudinal plane. Implants are disclosed which include channels for inter-fragmentary association with an elongate bone screw and which allow for angular variability of the screw relative to the channel. Also disclosed is an anti-backout mechanism that helps prevent fixators from backing out upon securement of the implant in the spine. Kits comprising different sizes and inclination angles of components are disclosed, which can assist the surgeon in preoperatively assembling an implant to best fit in the surgical site of the patient.

Various spinal implants and methods for stabilizing the spine are provided. In one exemplary embodiment, a spinal implant is provided having an expandable container with an interior volume that is selectively expandable between a compressed condition and an expanded condition. The expandable container is coupled to a superior endplate member having a bone-contacting surface and an engagement surface effective to mate with a superior surface of the expandable container, and an inferior endplate member having a bone-contacting surface and an engagement surface effective to mate with an inferior surface of the expandable container. In addition, at least one inlet port is formed in the expandable container and is effective to communicate a fluid to at least one cavity disposed within the interior volume of the expandable container.

A cylinder-shaped expandable spinal implant is disclosed. The implant is a hollow housing having a cylinder-shaped wall, with a circular sealed distal end, and an opposite proximal circular open end. The open end of the housing has internal threads for securing a cap to it. A removable cap is threaded on the open end of the housing. The housing has two opposite large rectangular openings located longitudinally in the wall of the housing for receiving two arcuate sections. Each arcuate section is positioned in the rectangular opening in the wall of the implant. A locking means for locking the arcuate section in the rectangular opening in the wall is provided. A plurality of small ports are drilled in the wall for allowing bone growth after implantation of said implant in a patient. The arcuate sections have transverse ribs for locking the implant in position are implantation. Openings between the ribs are provided for allowing bone growth.

Methods and apparatus for providing percutaneous access to vertebrae in alignment with a visualized, trans-sacral axial instrumentation/fusion (TASIF) line in a minimally invasive, low trauma, manner are disclosed. A number of related TASIF methods and surgical tool sets are provided by the present invention that are employed to form a percutaneous pathway from an anterior or posterior skin incision to a respective anterior or posterior target point of a sacral surface. The percutaneous pathway is generally axially aligned with an anterior or posterior axial instrumentation/fusion line extending from the respective anterior or posterior target point through at least one sacral vertebral body and one or more lumbar vertebral bodies in the cephalad direction. The provision of the percutaneous pathway described herein allows for the formation of the anterior or posterior TASIF bore(s) and/or the introduction of spinal implants and instruments.

An allograft spinal implant includes a generally planar superior end face, a generally planar inferior end face and a generally cylindrical sidewall. The generally cylindrical sidewall extends between the superior end face and the inferior end face. At least one of the superior end face and the inferior end face includes a plurality of concentric circular ridges.