1
Andrew H Cragg, Robert L Assell, Eugene A Dickhudt: Method and apparatus for spinal distraction and fusion. TranS1, Knobbe Martens Olson & Bear, July 26, 2005: US06921403 (246 worldwide citation)

The invention provides an implantable spinal distraction/fusion rod with varied thread pitch and diameters along different portions of its length that it is capable of distracting two or more vertebral bodies relative to each other and/or facilitating the procedure of fusing the vertebral bodies tog ...


2
Andrew H Cragg, Jonathan Kagan: Methods and apparatus for forming curved axial bores through spinal vertebrae. TranS1, Knobbe Martens Olson & Bear, September 14, 2004: US06790210 (240 worldwide citation)

One or more curved axial bore is formed commencing from an anterior or posterior sacral target point and cephalad through vertebral bodies in general alignment with a visualized, trans-sacral axial instrumentation/fusion (TASIF) line in a minimally invasive, low trauma, manner. An anterior axial ins ...


3
Andrew H Cragg: Method and apparatus for spinal augmentation. TranS1, Knobbe Martens Olson & Bear, May 31, 2005: US06899716 (236 worldwide citation)

Disclosed are methods and devices for accessing and treating the spine, while minimizing trauma to surrounding tissue. A device is introduced through tissue, to an access point on the spine. The device is thereafter advanced axially within the spine, from the access point across a treatment zone. Sp ...


4
Andrew H Cragg, Jonathan Kagan: Methods and apparatus for forming shaped axial bores through spinal vertebrae. TranS1, Knobbe Martens Olson & Bear, May 25, 2004: US06740090 (213 worldwide citation)

One or more shaped axial bore extending from an accessed posterior or anterior target point are formed in the cephalad direction through vertebral bodies and intervening discs, if present, in general alignment with a visualized, trans-sacral axial instrumentation/fusion (TASIF) line in a minimally i ...


5
Andrew H Cragg: Axial spinal implant and method and apparatus for implanting an axial spinal implant within the vertebrae of the spine. TranS1, Knobbe Martens Olson & Bear, May 6, 2003: US06558386 (207 worldwide citation)

Axial spinal implants for fusing and/or stabilizing spinal vertebrae and methods and apparatus for implanting on or more such spinal implants axially within one or more axial bore within vertebral bodies in alignment with a visualized, trans-sacral axial instrumentation/fusion (TASIF) line in a mini ...


6
Andrew H Cragg: Method and apparatus for providing posterior or anterior trans-sacral access to spinal vertebrae. TranS1, Knobbe Martens Olson & Bear, August 8, 2006: US07087058 (159 worldwide citation)

Methods and apparatus for providing percutaneous access to vertebrae in alignment with a visualized, trans-sacral axial instrumentation/fusion (TASIF) line in a minimally invasive, low trauma, manner are disclosed. A number of related TASIF methods and surgical tool sets are provided by the present ...


7
Andrew H Cragg: Methods of performing procedures in the spine. TranS1, Knobbe Martens Olson & Bear, March 21, 2006: US07014633 (153 worldwide citation)

Disclosed are methods of accessing and treating the spine, while minimizing trauma to surrounding tissue. A device is introduced through tissue, to an access point on the spine. The device is thereafter advanced axially within the spine, from the access point across a treatment zone. In one applicat ...


8
Andrew H Cragg: Methods and apparatus for performing therapeutic procedures in the spine. TranS1, Knobbe Martens Olson & Bear, December 18, 2007: US07309338 (93 worldwide citation)

Methods and apparatus for forming one or more trans-sacral axial instrumentation/fusion (TASIF) axial bore through vertebral bodies in general alignment with a visualized, anterior or posterior axial instrumentation/fusion line (AAIFL or PAIFL) in a minimally invasive, low trauma, manner and providi ...


9
Andrew H Cragg, Robert L Assell, Steven D Ainsworth, Eugene A Dickhudt, Bradley J Wessman: Dual anchor prosthetic nucleus apparatus. Trans1, Kevin W Cyr, Cyr & Associates P A, February 17, 2009: US07491236 (79 worldwide citation)

A spinal mobility preservation apparatus and methods are disclosed. The spinal mobility preservation apparatus may include a proximal body, an intermediate body, a distal body, and an expandable membrane. The proximal body and the distal body secure the mobility preservation apparatus to adjacent ve ...


10
Robert L Assell, Steven D Ainsworth, Andrew L Cragg, Eugene A Dickhudt: Method and apparatus for manipulating material in the spine. TranS1, Knobbe Martens Olson & Bear, March 10, 2009: US07500977 (74 worldwide citation)

Disclosed are surgical tools, tool sets and methods for percutaneously accessing and preparing treatment sites within the spine for subsequent treatment procedures. The treatment site may be an inter-vertebral motion segments in the lumbar and sacral regions of the spine. The tool set may comprise i ...