Class C medical devices are considered moderate-to-high-risk devices. The Saudi Food and Drug Authority (SFDA) categorizes medical devices into four classes (A, B, C, and D) based on the level of risk to patients. Class C devices include items that typically interact with the circulatory system or central nervous system, such as surgical instruments, diagnostic devices, and active implantable devices. Because of the potential risk, these devices are subject to stringent regulatory oversight during the registration process in Saudi Arabia.