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Dry goods, do you know what is medical blockchain?

Time : 01/07/2021 Author : cxpns6 Click : + -
        In the context of the existing medical system, the medical information of most medical institutions in China is not shared, resulting in the dispersion of personal health records in different medical institutions, which makes it difficult to realize the effective integration of personal health records and hinders the follow-up medical services. This paper proposes a multilayer blockchain network for personal medical record storage and management. It has the characteristics of centralization, tamper proof and multi node maintenance. It manages the relationship between each node, realizes the safe storage of personal health data and solves the scarcity of data through a consensus mechanism different from ordinary blockchain networks. Under the existing distributed and non interactive shared health record management mode, it is difficult to realize the effective integration of personal health records, and it is also difficult to provide reference for the subsequent triage and referral of medical diagnosis.
        First, blockchain is a distributed accounting technology, which organizes and stores data blocks in the form of time series to ensure that the data is not tampered with and forged by cryptography, which plays an important role in doctors' examination of past medical history. Unlike general blockchains, the health records of the medical chain are provided by different organizations, which requires a higher data structure of the blockchain. Secondly, the medical records stored in the medical chain are for individuals. At the same time, personal health records can be selectively shared with some medical institutions, that is, the shared sparse concept mentioned in the article. Finally, health data is private data that needs authorization to be used, which means that the medical chain also has the characteristics of authorization reuse. In the healthcare chain, data storage and sparse sharing can be divided into shared storage within the network and shared storage between networks.
        Shared storage within the network occurs in the edge chain network, and the process is divided into three stages:. First, when a record node generates a new health record, it will initiate a data storage request. At this time, the record node broadcasts the increased block request and the corresponding user ID to all other nodes in the network. Secondly, after receiving the request, the consensus node waits for each node to return the user presence status flag. Finally, the consensus node is marked in the shared relationship table of the comparison according to the user's existence status. If it is consumption, the consumption node packs the data and constructs blocks, and then distributes it to the node corresponding to the user ID in the sharing relationship table in the network, so as to realize storage.
        As a part of the recording node, the edge chain network in the data storage request can synchronously store user data. All recording nodes in the network form an asymmetric storage structure, and each recording node stores and shares the user health records registered in the recording node, so that the medical chain has higher data throughput. Shared storage across networks occurs between index chain networks and multilateral chain networks. Because every time the increased block request is broadcast in the edge chain network, the index node will also receive the request to synchronize the cross network shared storage and the intra network shared storage. After receiving the request, the index node will check its own inter network sharing relationship table. If the corresponding user in the request is also registered on the recording node of other edge chain networks, the user presence status flag will be returned to the consensus node.
        After receiving the data block from the consensus node, the index node forwards it to the other corresponding index node chain network, and unicast the consensus node network through the edge of the index chain network, so as to realize the cross network to share the stored data. If a user registers multiple recording nodes in an edge chain network, data migration within the network will occur because cross network shared storage will also be performed during data storage. The newly registered recording node initiates a request and unicasts to the consensus node. The consensus node sends the user ID and the address of the newly registered record node to any record node in the shared relationship table in the user network. After receiving the address, the recording node sends the corresponding health record to the newly registered recording node according to the user ID.
        If the record node newly registered by the user is the only node registered by the user in the side chain network, and the user has also registered the record node in other side chain networks, cross network data migration is carried out. The user's newly registered record node initiates a request and unicasts it to the consensus node. The consensus node forwards it to the index node, and the index node sends the user ID to any index node in the user sharing relationship table between networks. Ebadollahi of IBM believes that "by supporting patients' informed consent and data exchange through blockchain, the way of providing medical services can be fundamentally changed, so that interested parties can access patients' longitudinal health data at any time, opening the door to new treatment methods.
        ”。 By establishing a health care chain and adding a data storage and sharing mechanism of sparse sharing and authorization reuse to the blockchain technology, this article is well combined with the medical record system, and solves the problem that it is difficult to manage data from different sources and different hospitals under the current medical system in China. It has profound practical significance for individual and social medical systems. It includes 21 tasks in four categories: accelerating the construction of a new pattern of orderly medical treatment and diagnosis, deeply promoting the experience of Sanming medical reform, focusing on strengthening the capacity of public health services, and promoting the high-quality development of medicine and health!. The mission clearly selects 14 large-scale high-level public hospitals in 9 provinces and cities to carry out the pilot of high-quality development of public hospitals, and through the joint construction of the Commission and the province, to create a model of high-quality development of public hospitals and establish a template of modern hospital management system.
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