Pantheon Surgical


The Trident Anchored Cervical Interbody Fusion Device (ACI) is a cervical implant with an integrated anchor. The device is to be used with supplemental fixation, i.e. an anterior cervical plate. The implant is titanium with a PEEK radiolucent spacer and has an anchor component.

An ACI Inserter is used to insert the implant and advance the separate anchor component into the adjacent vertebral bodies. During advancement, the titanium anchor moves toward the posterior of the implant deflecting under the constraint of the ramp. Upon continued deformation, the anchor members curve out of the profile of the implant and can then pierce adjacent vertebral bodies. The anchor blades are plastically deformed in this manner and therefore retain their curvature post-deployment. The implant includes four locking lugs that interface with the anchor, once deformed. The anchor deploys under these lugs, thereby fixing the anchor to the implant. The locking lugs serve as a backstop that prevents separation of the anchor from the implant unless the anchor is physically retracted with the retraction tools. The retraction tools provide the needed mechanical advantage to overcome the curved shape of the anchor and pull it back under the locking tabs.


  • Single step implantation
  • Anchor is retractable for easy implant removal
  • Zero profile construct
  • PEEK spacer provides modulus of elasticity similar to bone
  • Provides adequate space for autogenous bone graft


  • Implant made of Titanium with a PEEK radiolucent spacer
  • Tantalum radiopaque markers per ASTM F560
  • Anchor is made of Titanium
  • Implant is offered in 5, 6, 7, 8, 9 and 10mm heights
  • Implant is offered in a 5° lordotic profile


  • 12mm depth x 14mm width
  • 14mm depth x 16mm width
  • Implant and Anchor are sterile packaged separately


  • The ACI Instrument System includes the following:
  • Trial Sizers
  • ACI Implant Inserter, 22-93002
  • ACI Retraction Tools
  • The ACI Inserter enable the surgeon to place the device and deploy the anchor members in one controlled step. The inserter has been designed to disassemble for thorough cleaning. Please refer for the Instructions for Use for disassembly and assembly instructions.