Patent application number | Description | Published |
20080262504 | Femoral ring loader - An instrument for inserting an implant between vertebral bodies, including a holder adapted to hold the implant during insertion of the implant between the vertebral bodies, a retractor adapted to retract the holder away from the implant after the insertion, and a guard adapted to prevent the implant from being removed from between the vertebral bodies during the retraction. | 10-23-2008 |
20090112322 | Spacer device and insertion instrument for use in anterior cervical fixation surgery - An intervertebral spacer has curvate upper and lower rough surfaces that stimulate bone growth and is formed from a porous material that facilitates bone growth thereinto. The spacer has a plurality of smooth linear grooves to facilitate insertion of the spacer into an intervertebral space using a spacer insertion tool that has a scissor-style body. Each of the insertion tool's arm's heads has an inner surface having a pair of smoothed linear protrusions that fit within the linear grooves of the spacer when the heads are closed about the spacer. When the spacer is held, spaces are present between the spacer's rough surfaces and the heads' inner surfaces so that when the protrusions are longitudinally slid from the grooves to leave the spacer in the intervertebral spacer, the rough surfaces are not disturbed. | 04-30-2009 |
20090118832 | Artificial intervertebral disc utilizing a ball joint coupling - An artificial intervertebral disc having a pair of opposing plate members for seating against opposing vertebral bone surfaces, separated by a ball joint coupling. One plate member has a centrally located ball-shaped protrusion that is rotatably coupled in a central socket in a cone-shaped protrusion on the other plate member. Thereby, the plate members are angulatable with respect to one another. Further, the disc assembly will not come apart under tension loads applied to the plate members, and the location of the ball joint coupling provides the disc assembly with a stationary centroid of motion that is centrally located between the vertebral bone surfaces, both causing the disc assembly to behave similarly in these respects to a healthy natural intervertebral disc. | 05-07-2009 |
20090177283 | Intervertebral spacer device utilizing a spirally slotted belleville washer and a rotational mounting - An intervertebral spacer having opposing plates seatable against opposing vertebral bones, separated by at least one convex element, preferably a radially slotted convex element having a wide end rigidly fixed to an upper plate and a narrow end rotatably mounted to a lower plate. The lower plate includes a central post extending upwardly from the inner surface of the lower plate, the post including a head that is received in a central opening in the narrow end of the convex element so that the convex element is allowed to rotate with respect to the lower plate so that the plates can rotate relative to one another. | 07-09-2009 |
20100152792 | INSERTION TOOL FOR USE WITH INTERVERTEBRAL SPACERS - An instrument for holding an intervertebral spacer, the instrument comprising a shaft having a proximal end and a distal end, the proximal end forming a handle and the distal end forming a spacer engaging subassembly, the spacer engaging subassembly comprising at least one selectively expanding and contracting enclosure into which at least a portion of the spacer is introduced when the engaging subassembly is expanded and an actuating mechanism, extending from the proximal end to the distal end, by which the spacer member engaging subassembly may be selectively expanded and contracted. | 06-17-2010 |
20100268342 | INTERVERTEBRAL SPACER DEVICE HAVING A SLOTTED PARTIAL CIRCULAR DOMED ARCH STRIP SPRING - An intervertebral spacer device having a pair of opposing plates for seating against opposing vertebral bone surfaces. Each of the opposing plates has an external surface with a deflectable wire mesh thereon, into which the bone can readily grow. | 10-21-2010 |
20100268345 | INTERVERTEBRAL SPACER DEVICE - An intervertebral spacer device may include first and second plates, each having inner and outer surfaces thereof, the plates may be disposed in a spaced apart relationship such that the inner surfaces face toward one another, and the outer surfaces face away from one another, the first plate including a retaining wall extending outwardly from the inner surface of the first plate; and a belleville washer, having narrow and wide ends thereof, may be disposed with said wide end contacting said inner surface of said first plate within said retaining wall, such that a compressive load applied to the outer surfaces of said plates is counteracted by said belleville washer, said belleville washer including a plurality of radially spaced concentric groove; wherein each concentric groove of the plurality of radially spaced concentric grooves in the belleville washer may have a respective length, a respective depth along the respective length, and a respective width along the respective length, at least one of the respective depth and the respective width may be uniform along the respective length; wherein each of the plurality of radially spaced concentric grooves in the belleville washer may be at a respective distance from an outer edge of the belleville washer, wherein the depths may differ with respect to one another depending on the distances, and the widths may differ with respect to one another depending on said distances. | 10-21-2010 |
20100298940 | INSTRUMENTS FOR REORIENTING VERTEBRAL BONES FOR THE TREATMENT OF SCOLIOSIS - An orthopedic device set, including: a plurality of intervertebral spacer elements, each spacer element having a different axial thickness from each other element, the axial thicknesses being selected to increase by an increment from one element to another; and an instrument for holding ones of the intervertebral spacer elements, the instrument comprising a shaft having a distal end, a selectively grasping subassembly for alternatively rigidly holding each spacer element at the distal end so that the spacer element cannot move relative to the instrument, and releasing the spacer element. | 11-25-2010 |
20110184476 | FEMORAL RING LOADER - An instrument for inserting an implant between vertebral bodies, including a holder adapted to hold the implant during insertion of the implant between the vertebral bodies, a retractor adapted to retract the holder away from the implant after the insertion, and a guard adapted to prevent the implant from being removed from between the vertebral bodies during the retraction. | 07-28-2011 |
20110196500 | SPACER DEVICE AND INSERTION INSTRUMENT FOR USE IN ANTERIOR CERVICAL FIXATION SURGERY - An intervertebral spacer has curvate upper and lower rough surfaces that stimulate bone growth and is formed from a porous material that facilitates bone growth thereinto. The spacer has a plurality of smooth linear grooves to facilitate insertion of the spacer into an intervertebral space using a spacer insertion tool that has a scissor-style body. Each of the insertion tool's arm's heads has an inner surface having a pair of smoothed linear protrusions that fit within the linear grooves of the spacer when the heads are closed about the spacer. When the spacer is held, spaces are present between the spacer's rough surfaces and the heads' inner surfaces so that when the protrusions are longitudinally slid from the grooves to leave the spacer in the intervertebral spacer, the rough surfaces are not disturbed. | 08-11-2011 |
20120158145 | INTERVERTEBRAL IMPLANT HAVING FEATURES FOR CONTROLLING ANGULATION THEREOF - An intervertebral implant includes a first plate having an inner surface, an outer surface, a ball shaped protuberance projecting from the inner surface and an annular groove surrounding the ball shaped protuberance. The implant includes a second plate having an inner surface, an outer surface, a curvate socket formed in the inner surface of the second plate and a raised rim surrounding the curvate socket. The first and second plates are assembled together so that the inner surfaces of the plates oppose one another and the ball shaped protuberance is disposed in the curvate socket and the annular groove aligned with the raised rim. The assembled first and second plates angulate and rotate relative to one another. | 06-21-2012 |
20120310353 | TRIAL INTERVERTEBRAL DISTRACTION SPACERS - An orthopedic spacer device comprising a spacer body having an external surface that includes at least two relative angle designation marks such that a rotational angle of the spacer body relative to a known reference is determinable. | 12-06-2012 |
20140142704 | TRIAL INTERVERTEBRAL DISTRACTION SPACERS - An instrument for holding an intervertebral spacer is provided. The instrument includes a compression assembly and a fixed shaft forming a handle and a compression surface. The compression assembly includes a selectively engageable shaft axially movable relative to a longitudinal axis of the fixed shaft. The engageable shaft forms a hook having a surface complimentary to the compression surface to define an enclosure for engagement with an annular groove of the spacer. The compression assembly includes a compression trigger mechanically connected to the engageable shaft for axially moving the hook from a first position relative to the fixed shaft in which the enclosure engages the spacer such that the spacer is held by the enclosure to a second position relative to the fixed shaft in which the spacer is disengaged from at least one of the hook surface and the compression surface such that the enclosure disengages the spacer. | 05-22-2014 |