3D Printing Medical Implant Pads with High Biocompatibility

Human implants belong to Class III medical appliances, which require high biocompatibility, mechanical properties, non-toxicity and anti-corrosion properties.Implantable artificial bones are mainly used in the treatment of bone tumors, spinal trauma and bone defects.Additive manufacturing orthopaedics has attracted much attention because of its individualized, complex, accurate production and rapid response.Its commonly used materials include metal materials such as titanium-based alloys, cobalt-chromium alloys, stainless steel, tantalum and non-metallic materials such as PEEK materials, hydroxyapatite and so on.Through three-dimensional reconstruction of medical CT data, porous implants with bionic trabecular structures such as joint, spine, craniofacial bone and extremities can be manufactured by using three-dimensional printing techniques like electron beam melting, selective laser melting and selective laser sintering.The factors such as porosity, pore size and pore reinforcement can be adjusted for individuals, which is more conducive to bone growth and is better in clinical effect.