For purposes of informed consent, physical restraint means any physical or mechanical device or material, attached or adjacent to a patient's body, that the patient cannot remove easily, which has the effect of restricting the patient's freedom of movement. Physical restraint does not include the use of the least restrictive immobilization reasonably necessary to administer necessary treatment of a therapeutic, non-continuous nature, such as a single injection of antibiotics, and where the immobilization is removed upon the administration of such treatment. This exception shall not include immobilizations for continuously administered treatments such as intravenous therapy.