The 4CIS WILL Pedicle Screw System is a minimally invasive spinal fixation device used to stabilize the thoracic and lumbar spine during fusion surgery. It consists of polyaxial, cannulated pedicle screws, rods, and set screws, allowing percutaneous insertion with minimal tissue damage.
A small, threaded, implantable rod with a screw head and drive intended for internal spinal fixation by being screwed into the spine to hold a correction/stabilization device (e.g., rod, plate, tether) to bone; it is made of a material that is not chemically degraded or absorbed via natural body processes (e.g., surgical steel, titanium alloy, carbon fibre). It is available in various types (e.g., pedicle or transfacet, with a slotted, cross, star, or polygonal drive), and is typically used to provide immobilization and stabilization of spinal segments in the treatment of spinal instabilities or deformities. A screw head adaptor intended to stabilize a rod may be included with the screw.