SIGNUS USA debuts COSY spine system in first U.S. implant

SIGNUS USA announced the first U.S. implantation of its COSY Cervicothoracic-Occipital Rod-Screw Spine Implant System, performed in Massachusetts by neurosurgeon Dr. Sebastian Koga. The milestone marks the American debut of the German-made platform as the company expands its spine technology presence in the U.S.

Why it matters: - The first U.S. implantation gives SIGNUS USA a clinical entry point for its COSY spine platform in the American market. - The debut adds a new option for surgeons treating complex occipito-cervico-thoracic cases that require modular fixation across multiple spinal regions. - The launch also strengthens SIGNUS USA’s push to introduce German spine technology to U.S. surgeons.

What happened: - SIGNUS USA announced the first U.S. implantation of the COSY Cervicothoracic-Occipital Rod-Screw Spine Implant System. - Dr. Sebastian Koga, chief of neurosurgery at Berkshire Health Systems in Massachusetts, performed the procedure. - The case marks the U.S. debut of the COSY system.

The details: - COSY is a modular posterior occipito-cervico-thoracic fixation platform. - The system is designed to support constructs from the occiput to the upper thoracic spine in one platform. - Dedicated transition rods extend support through the cervicothoracic junction. - The system supports multiple anchor options, including polyaxial, cervical pedicle, smooth-shank and angled screws. - Screw diameters range from 3.5 mm to 4.5 mm. - Surgeons can combine lateral mass, pedicle, C2 pars and translaminar trajectories in one construct. - Low-profile, cannulated screw heads allow up to 70 degrees of angulation. - The design supports K-wire-verified trajectory control and navigated, tissue-preserving techniques. - The platform also includes occipital plates and rods, cross and offset connectors, and atlas hook options. - COSY can be combined with DIPLOMAT, SIGNUS’ modular posterior thoracolumbar fixation system, when a construct must extend further caudally. - SIGNUS says DIPLOMAT has been in the U.S. market for more than a decade and has continued to evolve through product enhancements. - More information is available in the company’s announcement.

Between the lines: - The product positioning centers on flexibility for complex anatomy, which matters in cases where surgeons need to adapt fixation strategy during surgery. - Pairing COSY with DIPLOMAT suggests SIGNUS is trying to offer a broader end-to-end construct solution rather than a single-device launch. - Dr. Koga described the system as supporting a streamlined, tissue-preserving approach and said early clinical outcomes from the first case are encouraging.

What's next: - SIGNUS USA is likely to use this first case to support broader U.S. adoption of COSY among spine surgeons. - The company will continue evaluating the system’s clinical performance as more cases are performed. - Dr. Koga said he looks forward to assessing longer-term patient benefit as the technology is integrated into his practice.

The bottom line: - SIGNUS USA has cleared a key milestone in entering the U.S. spine market, with its flagship COSY system now used in a first American procedure.