Abstract:
An implant device designed for replacing a vertebral body of the spine. The implant device contains at least one moving member so as to vary the distance between a first and second member. Most preferably this movement is achieved by rotating at least one cam about an axis. The cam or cams are shaped so as to comprise an irregular polygon thus allowing the height of the implant device to be varied at discrete positions. A slidable telescopic engagement device within the implant device affords the added advantage of simple adjustment and maneuverability.
Abstract:
A spinal implant comprising a hollow body having a leading end, a trailing end and a pair of lateral walls extending from the leading end to the trailing end, the lateral walls including concave, non-threaded inner surfaces defining an internal space of the hollow body. The implant includes an anchoring member insertible between the lateral walls and into the internal space of the hollow body, the anchoring member having bone anchoring projections defining an outer diameter of the anchoring member. When the anchoring member is inserted into the internal space of the hollow body, the concave inner surfaces of the lateral walls substantially conform to the outer diameter of the anchoring member.
Abstract:
Bone plating implants, instruments, systems and methods for fracture fixation are provided. The systems includes the instruments and implants comprising a trial component, handle, aiming block, bone plate, tissue spreader, drill guide, K-wire guide, monoaxial screw-locking inserts, polyaxial screw-locking inserts, cable plugs, K-wires, monoaxial screws and polyaxial screws. The methods include the use of the instruments and implants for either open or minimally invasive fracture fixation surgery.
Abstract:
A method of stabilizing bone, such as a spine, includes providing a coupling element having first and second sections that are angled relative to one another, the coupling element having rod receiving openings for securing an elongated member such as an orthopedic rod, and assembling the coupling element with an anchoring element. The method includes securing the anchoring element in bone, moving the coupling element relative to the anchoring element to align the rod receiving openings with the orthopedic rod, securing the orthopedic rod in the rod receiving openings, and after the securing step, locking the coupling element from further movement relative to the anchoring element.
Abstract:
A corpectomy device has an inner member telescopingly disposed in an outer member so that the inner member is movable in an axial direction. The inner and outer members are hollow, defining a chamber, and include apertures in communication with the chamber. A locking clip engages the inner and outer members to fix the position of the inner member with respect to the outer member. The longitudinal dimension of the device is adjustable by distracting the inner member so that the inner member extends from the outer member and moving the locking clip from an unlocked position to a locked position.
Abstract:
A method of stabilizing bone, such as a spine, includes providing a coupling element having first and second sections that are angled relative to one another, the coupling element having rod receiving openings for securing an elongated member such as an orthopedic rod, and assembling the coupling element with an anchoring element. The method includes securing the anchoring element in bone, moving the coupling element relative to the anchoring element to align the rod receiving openings with the orthopedic rod, securing the orthopedic rod in the rod receiving openings, and after the securing step, locking the coupling element from further movement relative to the anchoring element.
Abstract:
A method for stabilizing a spine includes providing a coupling element having upper and lower ends, a rod receiving opening adapted to receive an elongated stabilizing rod, a bore extending through the lower end and a seat surrounding the bore adjacent the lower end; providing a fastener having upper and lower ends, a head having a radial surface, and at least one anchoring element between the lower end of the fastener and the head; assembling the fastener with the coupling element; anchoring the fastener to bone; moving the coupling element relative to the fastener for capturing the elongated stabilizing rod in the rod receiving opening; and urging the captured stabilizing rod toward the head of the fastener so that the rod contacts the head and forces the radial surface of the head against the seat.
Abstract:
A method for stabilizing a spine includes providing a coupling element having upper and lower ends, a rod receiving opening adapted to receive an elongated stabilizing rod, a bore extending through the lower end and a conical-shaped seat surrounding the bore adjacent the lower end; providing a fastener having upper and lower ends, a head having a radial surface, and at least one anchoring element between the lower end of the fastener and the head; assembling the fastener with the coupling element so that the lower end of the fastener passes through the bore of the coupling element and the radial surface of the head engages the conical-shaped seat. The method also includes anchoring the fastener to bone; moving the coupling element relative to the fastener for capturing the elongated stabilizing rod in the rod receiving opening; and urging the captured stabilizing rod toward the head of the fastener so that the rod contacts the head and forces the radial surface of the head against the conical-shaped seat of the coupling element for locking the coupling element from further movement relative to the fastener.
Abstract:
An apparatus for persuading an orthopedic rod into position in an orthopedic device such as an implant or coupling element is disclosed. The apparatus includes a body, a pusher member and a trigger slidingly coupling the pusher member to the body. The pusher member includes a slide and sleeve attached to the slide. The sleeve includes at least one pusher bar. A ratchet controls the translation of the pusher member along the body to urge the rod into position in the orthopedic device. The pusher member and body define a cannula so that a fastener may be inserted once the rod is in position. The apparatus is operable via a single hand. In addition, a method of urging an orthopedic rod into a recess of an orthopedic device using the rod persuader is provided.
Abstract:
A spinal implant including a hollow body having a distal end, a proximal end, and a pair of lateral walls extending from the distal end to the proximal end, the lateral walls having concave, non-threaded interior surfaces for defining an at least partially cylindrical internal space between the lateral walls. The implant includes an anchoring member having bone anchoring projections including a screw thread on an exterior surface thereof, wherein the screw thread of the anchoring member is a self-tapping screw thread having a radial cross-section that transforms from a substantially triangular radial cross-section to a substantially square radial cross-section starting from a distal end of the thread, and wherein at least one of the lateral walls adjacent the proximal end of the hollow body includes a reentrant thread adapted to cooperate with the screw thread of the anchoring member when the anchoring element is rotated for enabling the anchoring member to be screwed into the internal space of the hollow body.