84 Electromagnetic Fields in Biology and Medicine
7.2.2 EstaBlisH tHE magnEtic fiEld dEliVEry mEcHanism
When specifying the requirements for a medical device, the human interface considerations rank
next in importance to the eld characteristics. Requirements like those listed in the following are
suggested requisites. Depending on the goals for the device, there may be more requirements to be
dened.
Of foremost consideration is the physical condition of the patient. If there are situations in
which it is desirable that the device not be used, these circumstances need to be identied in the
requirements:
Size: The size limits (min and max) for the device, of either the applicator or the controller or
both.
Weight: The weight limits (min and ma ...