51
Joseph P Errico, Thomas J Errico, James D Ralph, Stephen Tatar: Polyaxial pedicle screw having a through bar clamp locking mechanism. Third Millennium Engineering, Joseph P Errico Esq, July 28, 1998: US05785711 (95 worldwide citation)

A polyaxial orthopedic device for use with rod implant apparatus includes a screw having a curvate head, a cross bar mounting element having a socket into which the head of the screw is initially polyaxially nested. The cross bar mounting element further includes a vertical split which permits the s ...


52
Rafail Zubok, Michael W Dudasik, Joseph P Errico: Artificial intervertebral disc having an articulating joint. SpineCore, Lerner David Littenberg Krumholz & Mentlik, May 8, 2007: US07214244 (94 worldwide citation)

An intervertebral device includes a first plate having an outer face and an inner face, and a second plate juxtaposed with the first plate, the second plate having an outer face, an inner face that opposes the first plate and a concavity that opposes the first plate. The device includes an elongated ...


53
James D Ralph, Stephen Tatar, Joseph P Errico: Artificial intervertebral disc having a wave washer force restoring element. Spine Core, Joseph P Errico Esq, Timothy J Brotree Esq, April 20, 2004: US06723127 (94 worldwide citation)

An artificial disc having a pair of opposing plates for seating against opposing vertebral bone surfaces, separated by a wave washer having a circumferential extent surrounding a central bore. Various wave washer embodiments disclosed include circumferential extents that are ring-shaped, spiral-shap ...


54
Joseph P Errico: Sliding shaft variable length cross-link device for use with dual rod apparatus. Fastenetix L L C, Joseph P Errico, May 19, 1998: US05752955 (93 worldwide citation)

A compression locking variable length cross-link device having a pair of rod hooking elements, each having rod securing and coupling ends. The coupling ends are slidably engaging by the insertion of one into the receiving socket of the other and for selective locking to one another independent of th ...


55
James D Ralph, Stephen Tatar, Joseph P Errico: Intervertebral spacer device having arch shaped spring element. SpineCore, Lerner David Littenberg Krumholz & Mentlik, August 28, 2007: US07261739 (87 worldwide citation)

An intervertebral spacer device having a pair of opposing plates for seating against opposing vertebral bone surfaces, separated by at least one spring mechanism. The preferred spring mechanism is an arched strip spring. In a first embodiment there are multiple springs positioned independently about ...


56
Joseph P Errico, Thomas J Errico, Julius R Falcon, James D Ralph, Stephen Tatar: Spinal hook implant having a low blade and S swivel hook. Fastenetix, Joseph P Errico Esq, September 22, 1998: US05810818 (83 worldwide citation)

A hook device for use with support rod implantation apparatus is disclosed which is positionable along the central axis of the posterior surface of the spine and has independently rotationally positionable blade and head portions. The head portion is engageable with a deflecting top cylindrical port ...


57
Joseph P Errico, Thomas J Errico, James D Ralph: Advanced compression locking variable length cross-link device. Fastenetix, Joseph P Errico Esq, January 20, 1998: US05709684 (80 worldwide citation)

A variable length cross-link device for use with orthopaedic dual rod apparatuses includes a pair of elongate elements, each having a first end which mates with a rod or pedicle screw. The first element has a second end which is narrow and extending. The second element has a second end which is wide ...


58
James D Ralph, Stephen Tatar, Joseph P Errico: Intervertebral spacer device having a wave washer force restoring element. SpineCore, Joseph P Errico Esq, Timothy J Bortree Esq, July 6, 2004: US06758861 (78 worldwide citation)

An intervertebral spacer device having a pair of opposing plates for seating against opposing vertebral bone surfaces, separated by at least one force restoring element. The preferred force restoring mechanism is a wave washer. In a first embodiment the wave washer is ring-shaped. In a second embodi ...


59
Joseph P Errico, Michael W Dudasik, Rafail Zubok, James D Ralph, Stephen Tatar: Artificial intervertebral disc. SpineCore, Lerner David Littenberg Krumholz & Mentlik, January 24, 2006: US06989032 (66 worldwide citation)

An artificial disc having a pair of opposing baseplates, for seating against opposing vertebral bone surfaces, separated by a ball and socket joint that includes a ball compression locked to a post extending from one of the baseplates. The ball is captured within a curvate socket formed in a peak of ...


60
Rafail Zubok, Antonio Valdevit, Michael W Dudasik, Joseph P Errico: Cervical disc replacement method. SpineCore, Lerner David Littenberg Krumholz & Mentlik, February 7, 2006: US06994728 (60 worldwide citation)

A method for replacing at least a portion of an intervertebral disc in a spinal column includes removing the portion of the intervertebral disc from the spinal column and inserting an apparatus for replacing the portion of the intervertebral disc. The apparatus is operable to permit respective verte ...