Assisting in medical treatment means that a physician or dentist(a) patientThe following are auxiliary acts performed by nurses and assistant nurses when examining or treating a patient.painThis includes palliation, predicting symptom emergence, and responding to changes in condition.
Assistance in medical treatment is,medical careThe work of nurses and assistant nurses is stipulated in the Public Health Nurses, Midwives, and Nurses Act (Articles 5 and 6), and is the exclusive work of nursing professionals (Articles 31 and 32 of the same Act).
Nursing assistants perform a wide range of medical procedures,(a) patientThis includes the performance of medical procedures on behalf of a patient that may endanger the life or health of the patient. However, not every medical act can be performed by a nurse if a physician orders it. In response to an order, the nurse is required to determine whether the physician should perform the act or whether it is an act that would not cause a problem if performed by the nurse herself. Contents of the instruction,(a) patientThe state of the patient, the competence of the nursing professional, the degree of invasiveness of the action, the type of drug, and other factors are also taken into consideration, as well as the fact that the action is(a) patientProfessional judgment is required to determine the degree of potential danger to the Legal liability for assisting in medical treatment arises for both physicians and nursing professionals.

References
1) Japan Nursing Association: Explanation of major terms related to nursing: Conceptual definitions, historical transition, and social context,.
http://www.nurse.or.jp/home/publication/pdf/2007/yougokaisetu.pdf
(2) Kiyonari Inoue: "Basic Knowledge of Legal Terms," Nippon Igaku Shinpo, p. 84, 2010.
(3) Mitsuko Matsuki (ed.): Introduction to Nursing: What is Nursing and What is Nursing Science, 4th edition, Nouvelle Hirokawa, 2007.