Axis Spine Technologies Ltd.

Charles Barfield

Jonathan Arcos

Christopher Reah

Michael C Sherman

Intervertebral fusion device comprising a superior component, an inferior component, and a core component. The superior component comprises first and second superior parts which are coupled to each other to allow the first and second superior parts to move apart to thereby increase a perimeter of the superior component top side. The inferior component comprises first and second inferior parts which are coupled to each other to allow the first and second inferior parts to move apart to thereby increase a perimeter of the inferior component bottom side. The core component is configured for insertion between the superior and inferior components whereby separation between the superior and inferior components is determined. The core component interengages with each of the superior and inferior components upon insertion. The superior and inferior components are unattached to each other before the core component is inserted between the superior and inferior components. As the core component is progressively inserted between the superior and inferior components, the core component: bears against the first and second superior parts to push the first and second superior parts progressively apart; and bears against the first and second inferior parts to push the first and second inferior parts progressively apart.

Intervertebral devices

The insertion instrument () for inserting a modular intervertebral fusion device or components thereof into an inter-vertebral space comprises at least one superior (arm), () mounted on a superior support () such that the at least one superior arm extends from the superior support. The insertion instrument further comprises at least one inferior arm (), () mounted on an inferior support () such that the at least one inferior arm extends from the inferior support. The superior and inferior supports (), () are mechanically coupled to each other whereby: the at least one superior arm (), () and the at least one inferior arm (), () extend in generally a same direction such that, in use, each of the distal ends of the superior and inferior arms engage at a respective location on a modular intervertebral fusion device or component thereof; and the superior and inferior supports (), () rotate relative to each other to provide relative rotation of: the at least one superior arm; and the at least one inferior arm, whereby there is movement together and apart of the at least one superior arm and the at least one inferior arm at their distal ends. One of: the at least one superior arm (), (); and the at least one inferior arm (), () is unarticulated between its distal end and the respective superior or inferior support (), (). The other one of: the at least one superior arm (), (); and the at least one inferior arm (), () comprises a hinge () between its distal end and the respective superior or inferior support. The hinge () rotates the distal end of the other one of the superior arm and the inferior arm towards or away from the one of the superior arm and the inferior arm.

Insertion instruments

An assembly for determining height and angle of an intervertebral device to be implanted in an intervertebral space. The assembly comprises a sizing instrument () comprising a support () attached to first and second arms (), () which extend in generally a same direction from the support. The assembly also comprises superior and inferior endplates (), () of the intervertebral device to be implanted. One of the superior and inferior endplates (), () engages with a distal end of the first arm () and the other of the superior and inferior endplates (), () engages with a distal end of the second arm (), the superior and inferior endplates opposing each other when they are engaged with their respective arms. The distal end of the second arm () performs first and second forms of movement relative to the distal end of the first arm (), the first and second forms of movement being independent of each other, the distal end of the second arm moving along different respective paths in the first and second forms of movement, the first form of movement changing separation between the superior and inferior endplates (), (), and the second form of movement changing an angle between the superior and inferior endplates (), (). The support () comprises a user control which is mechanically coupled to at least the second arm () of the first and second arms to provide upon user operation of the user control each of the first and second forms of movement of the distal end of the second arm.

Growing community of inventors

Hernando, MS, United States of America

Charles Barfield