Medical Grade Silicone Textile Coating
topic
Medical grade silicone coatings (platinum-cured PDMS, purity >99.9%) are applied to implantable woven polyester or PTFE vascular grafts at 50–150 µm thickness, meeting ISO 10993 biocompatibility for cytotoxicity, sensitization, and hemocompatibility. Drug-eluting silicone coatings incorporate active pharmaceutical ingredients (heparin, antibiotics) at 1–5 µg/cm² for controlled release over 7–30 days. Sterilization resistance to gamma radiation (25–50 kGy) and ethylene oxide is required. Silicone-coated meshes for hernia repair maintain burst strength >100 N while reducing inflammatory response by 40–60% versus uncoated alternatives. Regulatory compliance with FDA 21 CFR and EU MDR is mandatory.
Role
Enables biocompatible, long-term implantable textile medical devices including vascular grafts, hernia meshes, and wound dressings by providing a biologically inert, drug-capable interface between synthetic fiber substrate and human tissue.