Design And Implementation Of The Pharmaceutical Supply Chain Supervision System Under The Two-invoice System

On January 11,2017,the State Food and Drug Administration issued the "Implementation Opinions on the Implementation of the" Two-Invoice System "in the Procurement of Drugs in Public Medical Institutions",which marked the official entry of the "two-invoice system" in the purchase and sale of drugs.The "two-invoice system" refers to the first invoice issued by a pharmaceutical manufacturing enterprise to sell medical consumables,medicines,etc.to a pharmaceutical distribution company,and the pharmaceutical distribution enterprise to sell medical consumables,medicines,etc.to a medical institution to issue a second invoice.The implementation of the "twoinvoice system" in the procurement of medicines in public medical institutions is an important step in deepening the reform of the medical and health system and promoting the healthy development of the pharmaceutical industry.However,in the implementation process,there are problems such as repeated verification of invoices for the entire batch of drugs,difficulty in monitoring the same batch of drugs,and the lack of early warning for drug supervision.In response to these problems,this paper proposes a pharmaceutical supply chain supervision system based on blockchain to improve bill supervision in the process of pharmaceutical circulation.The main work of this article is as follows:(1)Analysis of the demand and function of the drug purchase and sale bill supervision business under the two-invoice system.In view of the problems in the supervision of drug purchase and sale bills under the two-invoice system,including the repeated verification of invoices for the entire batch of drugs,the difficulty of supervision of drugs with the same batch number but different invoice numbers,and the lack of early warning for drug supervision.In this article,the business process of drug purchase and sale invoice supervision under the two-invoice system is analyzed,and the functional requirements of the supervision business are obtained.Combining the characteristics of blockchain technology and the problems in supervision,the functions of the pharmaceutical supply chain supervision system based on blockchain are determined.(2)Architecture and functional design of the pharmaceutical supply chain supervision system based on blockchain.This article divides the pharmaceutical supply chain supervision system based on blockchain into invoice issuance and upload module,invoice verification module,early warning module,invoice query module and user management module according to functions.Through the invoice issuance and upload module,invoice verification module,medical institutions can share their respective drug transaction data,through the use of smart contracts and authority management to limit the scope of invoices,so that it can only be used for medical institutions for invoice inspection.The invoice query module based on the blockchain can trace the complete input and output invoices of drug circulation enterprises,helping drug regulatory agencies to implement supervision of drugs with the same batch number and different invoice number.Based on the smart contract early warning module,it can monitor the results of the medical institution's invoice inspection,and at the same time send the abnormal information to the local drug regulatory authority in real time.The user management module can help users complete account management.(3)Implementation and testing of the pharmaceutical supply chain supervision system based on blockchain.First,This paper implements the main functional modules of the pharmaceutical supply chain supervision system based on blockchain.By building a blockchain network and deploying an experimental environment,a test environment is provided for the subsequent testing of each interface module.Through the functional test of each interface module,it is proved that the proposed blockchain medical supply chain supervision system can achieve its proper function under the two-invoice system.Compared with the existing two invoice supervision system,the pharmaceutical supply chain supervision system based on blockchain proposed in this paper can help the medical structure to solve the problem of repeated verification of invoices for the entire batch of drugs,and it can also help the drug regulatory department to achieve more complete supervision.Finally,the pharmaceutical supply chain supervision prototype system based on blockchain is deployed to complete the display of the system's various functional interfaces.