Amendia, Inc.

Spinal Elements, Inc.

Other

Spiral Elements, Inc.

Joshua David Gunn

David Brett Cain

Jeffrey Scott Radcliffe

Geoffrey Toon

Hansen A Yuan

Mark Wilson Jacob

David Cain

Mark W Jacob

Jeffrey S Radcliffe

A clip-on reducer tool assembly for seating a spinal fixation rod in a rod receiving implant, the tool assembly has an outer sleeve. The outer sleeve has a proximal end with a cylindrical portion having a threaded opening, a first leg extension extending therefrom to a distal end, and a second leg extension joined to the first leg extension at an intermediate location between the distal end and proximal end. The second leg extension extends from the distal end toward the proximal end to a lever end spaced from the cylindrical portion. The leg extensions at the distal end have grasping members to engage an outer surface of a rod receiving implant and a fulcrum proximally located near the intermediate location configured to enlarge the space between the leg extension at the distal end as the lever end is depressed inwardly relative to a longitudinal axis of the outer sleeve.

Clip-on reducer

A modular tulip assembly has a rod receiving tulip and a saddle. The saddle is interlockingly held inside a distal portion of the tulip. The saddle has an external locking groove or recess. The tulip has a locking projection. The locking projection is positioned into the external locking groove or recess and holds the saddle in a pre-loaded unlocked state ready to be pushed onto a head of an implanted bone screw. Upon receiving the head of the bone screw, the saddle can be moved distally relative to the tulip to a locked state by moving the locking groove or recess distally past the locking projection to where the proximal end of the saddle is past abutting the locking projection.

Modular tulip assembly

A modular tulip assembly has a rod receiving tulip and a saddle. The saddle is interlockingly held inside a distal portion of the tulip. The saddle has a locking projection. The tulip has a pair of grooves or recesses. The locking projection is positioned into the proximal tulip groove or recess and holds the saddle in a pre-loaded unlocked state ready to be pushed onto a head of an implanted bone screw. Upon receiving the head of the bone screw, the saddle can be moved distally relative to the tulip to a locked state by moving the locking projection distally into the distal tulip locking groove or recess.

A screw extension assembly for use in minimally invasive spinal surgery, the assembly has an inner slotted shaft and an outer shaft, a rod reducer and a removable nut. The combination when assembled is configured to move a spinal fixation rod into a slotted rod receiving spinal implant where it is seated and affixed thereto. The screw extension assembly further has a locking knob rotationally coupled to a proximal end of the outer shaft, wherein the inner shaft has one or more cam grooves and the locking knob has a pin extending into and guided by said cam groove causing the outer shaft to translate longitudinally upon rotation of the locking knob relative to the inner shaft toward an engaged position locking the deflectable legs in the coupled position to the slotted rod receiving implant.

Minimally invasive screw extension assembly

An expandable implant device () for insertion between two vertebrae () is disclosed. The device () has a center body () one or more lift bodies () and an external retaining band (). The external retaining band () holds the sides () of the one or more lift bodies (). The center body () has ramp surfaces () having a plurality or sets of ramps () sloped for allowing upward movement of the one or more lift bodies (). The sides () have complimentary ramp surfaces that fit onto the ramps () of the center body (). The height of the device () is increased by upward movement or downward movement or both of the one or more lift bodies () driven by the lengthwise movement of the center body ().

Expandable spinal implant

A tulip bone screw assembly has a bone screw, a tulip and a saddle. The bone screw has a threaded shank and a polyaxial head. The tulip has a slotted opening for receiving a rod and an open distal end for passing the shank of the bone screw and holding the head and a locking ring positioned between the slotted opening and the distal end. The saddle has an axis defined by a center opening, a proximal concave end for engaging and holding the rod and a distal end with a plurality of friction fingers bent inwardly toward an axis of the saddle for applying a friction force to the head of the bone screw.

Tulip bone screw assembly

A transverse crosslink device is presented. The transverse crosslink device has a connecting member, a first rod gripping assembly, and a second rod gripping assembly. The rod gripping assemblies can be pivotly connected to an end of the connecting member, such that the rod gripping assembly can selectively pivot in a direction substantially transverse to the longitudinal axis of the connecting member. The rod gripping assemblies can also be configured to selectively grip a portion of a stabilizer rod.

Transverse crosslink device

A bone screw system is presented. The bone screw system has a fixation element, a receiving element, coupling element, and a compression element. In one aspect, the fixation element is adapted to engage a bone and has a head portion and a threaded shank portion.

Growing community of inventors

Woodstock, GA, United States of America

Joshua David Gunn