Research On Controlling Policy In Medical Supply Chain

With the development of medical logistics, recently a lot of medical enterprises are facing the problems of goods backlogs. However, the surroundings around medical enterprises varies from time to time. Traditional inventory theory cannot interpret most problems in medical inventory control. It is necessary to scrutinize the operation modes of medical inventory by using new theory. This paper, based on the system theory and cybernetics analyzes the medical inventory problem are analyzed by quantitative analysis combined with qualitative analysis in order to form a relatively complete framework of medical inventory theory which gives an efficient decision support for medical inventory. The content of the paper are completed as follows:(1) Description of the concepts andelements of medical supply chain, medical logistics and medical inventory. The current situation of medical industries at home and abroad, the demand of medicine in medical market, and the characteristics of medical circulation market are analyzed. On such basis, the problems in medical inventory are revealed and analyzed: the medicine safety problem, the inventory cost problem, the inventory turnover problem. At last, the related theories at home and aboard are briefly reviewed.(2)Based on traditional inventory replenishment policy, this paper analyzes the main methods of traditional inventory replenishment policy by data analysis of domestic third-class hospitals and large pharmaceutical factories. Moreover, the limitations of those methods are pointed out. At last, the factors for medical inventory model construction are taken into consideration(3) According to the multi-product ordering problems in medical chain supermarkets, the coordination mechanism is led to medical inventory research. Research is mainly on the multi-product ordering problems in medical chain supermarket under deterministic demand. First, the inventory shoppers of medical retailer under different time-varying demands are established and analyzed. Then the models are extended to multi-supplier and multi-retailer with a given lead time. Use computer simulation to get the approximate optimal policy. By the empirical analysis,the theoretical results are obtained:JRP is the optimal policy in multi-product ordering in medical chain supermarket.(4) Research on the medical inventory replenishment policy under different demands,different inventory levels and different surroundings. First three patterns in the inventory models with shortages are considered: starting with shortages and ending without shortages, starting with replenishment and ending with shortages and starting and ending with shortages. Moreover, the corresponding models are established. Then the model with partial-exponential type-backlogging is established on the basis of the former model. At last, the optimal inventory policies for medical inventory replenishment models are obtained.(5)On the basis of dissipative structure of management, the medical inventory control problems are considered completely. The capital flow of medical inventory is analyzed deeply from multi-angle and multi-aspect. The medical inventory models which take into consideration internal and external inflation rate, internal and external purchasing cost, internal and external shortage cost and internal and external holding cost are established. Moreover, the affects of internal and external inflation rate, internal and external purchasing cost to medical inventory replenishment cycle, replenishment numbers and relative costs are analyzed. The results are that:the inventory cost increases with the increase of internal and external inflation rate and internal and external purchasing cost. The optimal numbers decreases with the decrease of internal and external inflation rate and internal and external purchasing cost.At last,the under table dealing in medical circulation is revealed by the theoretical result. And the improvement schemes are provided.(6)The research is extended to stochastical inventory research. According to the raw medicine in hospital pharmacy,the stochastical(Q,r) inventory model with a lead time under the condition of permissible delay in payment is considered.The stocasyical(Q,r)model of the penalty for stock out is also considered.(7)There are some mistakes in cost counting of traditional perishable inventory model.Some researchers often consider the cost due to deterioration repeatedly. The mistakes are verified in this paper.