Cell growth surface and Ti coating on PEEK and PEKK

Integration or fixation of medical implants in the bone is an important way to increase the stabilization of the implant and reduce adverse effects for patients. One way to achieve this is to promote cell attachment and/or bone ingrowth using titanium coatings. on CoCrMo, stainless steels or PEEK. For devices made of poly-ether-ether-ketone (PEEK) and poly-ether-ketone-ketone (PEKK), with good cell growth properties, the Medthin™ 65 Ti (metal) coating supports cell attachment.

The Medthin 65 coating has important benefits for cell adhesion applications and PEEK/PEKK applications:

  • Cell attachment
  • Good coating adhesion on PEEK and PEKK
  • Tunable coating roughness
  • Preservation of the PEEK/PEKK structure

Titanium is deposited with generation II or generation III PVD technology, enabling high coating adhesion strength (>20MPa, according to ASTM F1147) and keeping the PEEK/PEKK structure properties intact with its low deposition temperature (<140°C). The effects of the coating process on the PEEK structure has been verified by differential scanning calorimetry (DSC) and Fourier-transform infrared spectroscopy (FTIR).
Medthin 65 Ti-coated PEEK spinal cages are transparent on X-ray, CT and MRI images, allowing surgeons to confirm the implant’s placement, position and integrity over time. This radiolucency makes it easier for doctors to confirm a good outcome and thereby helps prevent serious complications from spinal fusions due to a migrating implant.