Abstract: The form and function of hospital clinical engineering has been limited to the scope of asset operation for a long time, lacking in basic theory and technical resources, which makes it difficult to form a discipline system. In this paper, the geometric balance principle was used to deduce the model and trend of after-sales service of medical equipment at different stages, as well as the corresponding positioning of clinical engineering; the dynamic balance principle was used to construct the organizational behavior model of clinical engineering to obtain the maximum energy, as well as the corresponding positioning of the maximum effect of clinical engineering, and to analyze the environment, state, and dynamic effect of hospital clinical engineering in the multiple maintenance relationship.The present paper provided a theoretical basis for the establishment of discipline of hospital clinical engineering from a variety of perspectives, and theoretically proved that professional learning ability and practical acquisition ability are the basic elements to improve the existing level, which can be used as the practical way and specification of hospital clinical engineering design technical line.

Key words: Clinical engineering, Medical equipment, Maintenance relationship, After-sales service