The MDD directive applies to some medical devices marketed in all EU member States and some non-EU countries. Partial medical device means any instrument, device, appliance or other thing intended for use in the human body, whether alone or in combination, including the software required for its normal use:
(1) Diagnosis, prevention, surveillance, treatment or mitigation of diseases;
(2) diagnosis, monitoring, treatment, mitigation or repair of injury or disability;
(3) exploration, replacement or alteration of anatomical and physiological processes;
(4) Control of pregnancy. But not all medical devices are subject to MDD directives.