The SIGNUS TETRIS™ ST and SIGNUS TETRIS™ R ST system is an intervertebral fusion device to treat degenerative disc disease. The implants are additively manufactured from titanium alloy (Ti-6Al-4V). Each device is available in a single footprint, with multiple heights and angulations. The SIGNUS TETRIS™ ST/ TETRIS™ R ST device is placed by a PLIF (Posterior Lumbar Interbody Fusion) approach in the L2 – S1 spinal region and should be inserted in pairs. The device is comprised of structural titanium in an open-pore grid structure. The large fenestration in the implant permits the cage to be packed with autogenous bone graft and/or allograft comprised of cancellous and/or corticocancellous bone graft to facilitate fusion.
A device intended to be implanted into the space of an intervertebral disc that has been partially or totally removed during surgery in order to allow bone fusion between two contiguous vertebral bodies, typically in the treatment of degenerative disc disease (DDD). It is in the form of a hollow, porous, threaded and/or fenestrated cylindrical or geometrical device made of metal [e.g., titanium (Ti)] that provides mechanical stability and sufficient space for therapeutic spinal bone fusion to occur; bone graft is typically used to help with osseointegration. Fixation screws and devices associated with implantation may be included with the device.
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