Medical devices Class I
Class I: Those supplies that are known in medical practice and that their safety and efficacy are proven and, generally, are not introduced to the body.
Medical devices Class II
Those supplies that are known in medical practice and that may have variations in the material with which they are made or in their concentration and, generally, are introduced to the organism staying less than thirty days.
Medical devices Class III
Those supplies recently accepted in medical practice or that are introduced to the body and remain there for more than thirty days.