The classification of medical devices is based on a number of considerations, including active, passive, atraumatic, non-invasive, implantable, etc. There is no evidence to suggest that active medical devices are necessarily Class II products. There is no evidence that active medical devices are necessarily Class II.
On the contrary, the majority of active products are class III, depending on the product you can refer to the Medical Device Classification Catalog, which has a detailed description
.