Australia’s Medical Device Classes: From Low to High Risk Explained In Australia, medical devices are classified into four risk-based categories: Class I (low risk), Class IIa, Class IIb, and Class III (high risk). The Therapeutic Goods Administration (TGA) oversees classification and regulatory approval. Higher-risk devices require more stringent evaluation, ensuring safety and efficacy before entering the market. Download the below PDF to get more detailed information about Different Categor...