Search Results

The 4CIS® Chiron spinal fixation system is intended to provide immobilization and stabilization of spinal segments in skeletally mature patients as an adjunct to fusion in the treatment of the following acute and chronic instabilities or deformities of the thoracic, lumbar and sacral spine:

1. Degenerative disc disease (defined as discogenic back pain with degeneration of the disc confirmed by history and radiographic studies):
2. Spondylolisthesis;
3. Trauma (i.e., fracture or dislocation);
4. Deformities or curvatures (i.e., scoliosis, kyphosis, and/or lordosis);
5. Tumor;
6. Stenosis:
7. Failed previous fusion (pseudoarthrosis).

The Spinal Fixation System is a top-loading posterior spinal fixation system which consists of pedicle screws, rods, nuts, transverse (cross) link and associated instruments. Rigid fixation is provided by pedicle screws inserted into the vertebral body through pedicle of the lumbar spine via posterior approach. This system will allow surgeons to build a spinal implant construct to stabilize and promote spinal fusion through open surgery or minimally invasive surgery. Implant components can be rigidly locked into a variety of different configurations to suit the individual pathology and anatomical conditions of the mature patient. The implant components are supplied non-sterile single use and are fabricated from titanium alloy (Ti-6A1-4V ELI) that conforms to ASTM F136 and Cobalt Alloy (Co-28Cr-6Mo) per ASTM F1537. Also, Specialized instruments are available for the application and removal of the Spinal Fixation System.

The provided document is a 510(k) Premarket Notification for a spinal fixation system (4CIS® Chiron Spinal Fixation System). It focuses on demonstrating substantial equivalence to previously marketed devices through mechanical testing and comparison of design features and indications for use.

Crucially, this document does NOT contain information about an AI/ML-driven medical device or any study involving human readers, ground truth establishment by experts, or performance metrics like sensitivity, specificity, or AUC.

Therefore, I cannot provide the requested information regarding acceptance criteria and a study that proves a device meets them for an AI/ML product based on this document. The document describes a traditional medical device (implantable hardware) and its clearance pathway, which relies on engineering and mechanical testing, not software performance studies.

Ask a specific question about this device