Use of polyetheretherketone (PEEK) as a material for medical implants continues to grow. In an important announcement from the five-year-old Solviva biomaterials business at Solvay Specialty Polymers, Eisertech LLC (San Diego, CA) received 510(k) clearance from the U.S. Food & Drug Administration (FDA) for a new cervical cage and lumbar cage implants made of Zeniva PEEK rods.
The material has a modulus very close to that of bone in addition to excellent toughness and fatigue resistance. The cage systems, made from various sizes of PEEK rods, are hollow. That allows bone to grow through the device, fusing the adjacent bony surfaces of the vertebrae.