Plasma-Sprayed HA Coatings

DOT applies the plasma sprayed HA coating to the implants in a vacuum chamber using the VPS vacuum technique.

Plasma-Sprayed HA Coatings - PDF: 600 KB

• Joint implants: hip joint, knee joint, ankle joint, shoulder joint, wrist joint, finger implants and spinal implants
  

• Surface enlargement
• High primary stability of the implant due to rough surface
• Long-time stability due to bone ingrowth into the porous HA layer
• Improved fatigue strength of the implants compared with sintering techniques
• Application of VPS technique leads to increased purity and adhesive strength in comparison to other methods (e.g. APS - Atmospheric Plasma Spray)
  

• Coating thickness: 20–200 µm
• Roughness Ra: 5–13 µm
• Porosity: 10–20 %
• Adhesion strength: ≥ 15 MPa
• Ca/P ratio: 1.61–1.76
• Porous, crystalline surface