COSY – Modular Cervicothoracic Occipital Screw-Rod System
NEW YORK CITY, NY, UNITED STATES, September 15, 2026 /EINPresswire.com/ — SIGNUS USA has announced the completion of its inaugural implantation on American soil of the COSY Cervicothoracic-Occipital Rod-Screw Spine Implant System, performed by Dr. Sebastian Koga, Chief of Neurosurgery at Berkshire Health Systems in Massachusetts. This milestone represents the COSY system’s entry into the U.S. market and strengthens the launch of SIGNUS USA, a newly established domestic entity delivering advanced German spinal technology and precision engineering to American surgeons.
The COSY System serves as a contemporary, modular posterior occipito-cervico-thoracic (OCT) fixation platform, engineered to accommodate constructs extending from the occiput down to the upper thoracic spine within one unified system—including the cervicothoracic junction via dedicated transition rods.
A notable advantage of COSY lies in its versatile anchor options. Polyaxial, cervical pedicle, smooth-shank, and angled screws (Ø 3.5–4.5 mm) enable surgeons to employ lateral mass, pedicle, C2 pars, and translaminar trajectories within one construct, tailoring fixation to each patient’s unique anatomy and procedural needs. Low-profile, cannulated screw heads offering up to 70° of angulation allow for K-wire-verified trajectory guidance and facilitate navigated, soft-tissue-sparing approaches. For challenging anatomies and intraoperative adaptability, the system includes occipital plates and rods, cross and offset connectors, and atlas hook options, delivering a wide spectrum of construct configurations within a single modular framework.
For constructs requiring additional caudal extension, COSY integrates smoothly with DIPLOMAT®, SIGNUS’ modular posterior thoracolumbar fixation system. DIPLOMAT has been a presence in the U.S. for over a decade, having evolved continuously through refinements tailored to specific surgical and market demands.
“We are excited to provide our patients with access to new, evidence-based options,” said Dr. Sebastian Koga, who performed the first U.S. COSY procedure. “The COSY system’s design and instrumentation facilitate a streamlined, minimally invasive approach. Early outcomes from this initial case are promising, and I anticipate assessing long-term patient results as we incorporate this technology into our practice.”
To learn more about SIGNUS USA and its offerings, visit www.signus.com/us.
Erika Strecker
SIGNUS USA
+1 949-395-5608
e.strecker@signus.com
