65 results about "Corpectomy" patented technology

An intervertebral expandable spacer having a pair of co-axial annuluses locked together by an engagement member having i) a set screw and ii) a pressure plate having an outer face contacting the set screw and an inner face having teeth adapted to mate with the ratchet notches of the second member.

The present disclosure is directed towards a biomechanical implant and anterior, lateral or posterior instrumentation construct. The construct may be of unitary or modular construction, whereby a single molded construction can form the entire assembly, in which case the through holes may be adapted to receive a metallic insert for screw fixation; or alternatively be of a modular construction wherein the anterior / lateral instrumentation and intervertebral spacer are designed for removable locking engagement, one with the other, for insertion by the surgeon as a unitary construct. A unique feature of the construct resides within the instrumentation construction, whereby a single opening formed therein permits two bone screws, or the like fastener device, to be positioned within both the superior and inferior vertebral bodies surrounding the spacer implant, or, for example in the case of a corpectomy or diskectomy with cage insertion, wherein two screws can be fixed within a single vertebral body through a single through hole, and wherein the bone screws are constructed and arranged to cooperate with the retention plate so as to provide locking engagement, one to the other, with the retention plate, upon final fixation thereof. Screw retention elements of alternative shape, based upon the choice of vertical or horizontal orientation, based upon an opened figure eight design, are provided for insertion in a groove formed in the borehole of the instrumentation plate which allows insertion of each fixation element but will prevent a loosened fixation element from falling out of the plate.

An instrument set for an intervertebral expandable spacer having a pair of co-axial annuluses locked together by an engagement member, the set including an inserter / expander having both a rapid expansion mechanism and a fine tuning expansion mechanism.

Composite orthopedic devices that facilitate spine stabilization, such as: bone screws, rods, plates, interbodies, and corpectomy cages are disclosed. They are designed to provide both strength and load carrying capabilities, while increasing bio-integration of the devices with the surrounding bone tissue. They are constructed of composite layers of allograft and / or autograft bone and a structural material, such as titanium alloy or carbon / graphite fiber composite. Cannulations within the device are loaded with a mixture of stem cells, particles of allograft and / or autograft bone, and bone growth factors, such as BMP-2. The cannulations are connected to the surface of the device via multiple fenestrations that provide pathways to supply the bone / stem cell mixture to the surface, allowing living bone tissue to grow and insure bio-integration. The devices can also have radiofrequency (RF) stimulation implantation within the structure of the implanted device, capable of responding to external RF stimulation of enhanced bone growth.

A prosthetic device can be used as a prosthesis following a discectomy or a corpectomy. The prosthetic device includes two endplates with staggered motion limiting members. The device can be configured to allow six degrees of motion when comparing one endplate relative to the other. The endplates can be configured to fix the joint by changing the body held within the device and by adding a locking plate and fasteners. A method teaches how to insert a device to an intervertebral space via an anterior incision.

The invention relates to a device intended to replace or partially replace one or more vertebral bodies or intervertebral discs in the cervical, thoracic or lumbar spine, and includes methods for its use and deployment. The invention may be used to restore biomechanical parameters correlating with improved patient outcomes and also involves a method for a more effective discectomy or corpectomy prior to graft deployment.

An assembly comprising an expandable corpectomy cage and an insertion instrument, wherein the expandable cage comprises an instrument attachment features, including mating holes on the sides of the outer sleeve, and a ball-shaped pocket on the endplate of the inner sleeve, and the insertion instrument features a tuning-fork shaped holder, which attaches to the mating holes on the implant's outer sleeve using small bosses which mate with the holes under the spring tension of the fork, and a lever with a spherical end that mates with the ball-shaped pocket in the inner sleeve endplate.

The instant invention is a longitudinally adjustable corpectomy device which fits within the intervertebral distracted channel. A ratchet mechanism allows for an extendable member to adjust to a longer length to accommodate a distracted channel. The ratchet type mechanism allows the members to move in a unidirectional movement to prevent the two members from contracting once expanded.