Medical Device Traceability Management Scheme Based on Blockchain

With the development of the medical service industry, traditional centralized medical device traceability management systems are becoming inadequate for current demands. To address the deficiencies in data integrity, security, and privacy protection within centralized medical device traceability management systems, this paper proposes a medical device traceability management scheme based on the Hyperledger Fabric blockchain platform. First, we design a comprehensive medical device supply chain management process that supports user traceability queries and transaction evidence storage. Second, to securely store consumer privacy transaction data, we develop a privacy data storage and sharing mechanism that integrates Ciphertext-Policy Attribute-Based Encryption (CP-ABE) and SM4 hybrid encryption technology to ensure effective access control. This approach reduces the risks associated with plaintext data transmission while enhancing system security. Additionally, we design smart contracts to automate various functions related to information management, traceability queries, and access control, thereby improving the operational efficiency and flexibility of the system. Finally, experimental results indicate that the proposed scheme can effectively enhance the security of medical device traceability management.