CN112863629B - Block chain-based medical electronic medical record distributed management system and preparation method thereof - Google Patents
Block chain-based medical electronic medical record distributed management system and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a medical electronic medical record distributed management system based on a blockchain, which comprises a storage and access management module, wherein the storage and access management module comprises an IPFS cloud storage system, an access front end communicated with the IPFS cloud storage system, a local encryption storage system used for mutually encrypting and backing up the IPFS cloud storage system and the access front end, a blockchain network used for recording interaction processes of the access front end and the IPFS cloud storage system and used for managing key node information of the IPFS cloud storage system. The block chain-based medical electronic medical record distributed management system and the preparation method thereof can realize local encryption backup of medical records, the encryption backup is respectively encrypted by a medical institution and an IPFS management gateway, a private key patient himself stores the encrypted backup, and tamper-proof local data backup is realized; the whole process record of the medical record access is adopted, and when the medical record access is carried out, the access permission is set based on the attribute level relation, so that the whole on-chain data structure is simple.
Description
Technical Field
The invention relates to a medical electronic medical record management system, in particular to a block chain-based medical electronic medical record distributed management system and a preparation method thereof, and belongs to the technical field of medical electronic medical record management.
Background
The electronic medical record is the most important medical record of the patient in the medical treatment process of the hospital, and comprises records of the illness state, treatment, medication, medical technology, expense and the like of the patient; the ownership of the electronic medical record should belong to the patient, but is now stored in the hospital; there are the following problems: the electronic medical record belongs to personal privacy data, is exclusively used by medical institutions at present, and has no knowledge about patients in terms of data utilization, and even has the problem of privacy disclosure; the problem of data sharing is that how to safely and legally share the data of patients among different medical institutions is a current problem; how to implement the use questions by other departments authorized by the patient; the medical record data is tamper-proof; data security problems, namely data and hidden dangers of attack; a data storage problem; the blockchain adopts a decentralized distributed account book technology, has the advantages of distributed fault tolerance, non-falsification and privacy protection, is a technology for solving the use problem of the current electronic medical record, and is used in medical institutions, such as a phrOS system of a medical university hospital in Taibei, a medical lchain system of a Mayo clinic in England, a MedRec system in the U.S. and the like; and the Chinese patent application number: 201810910157.6A distributed management system for medical electronic medical records based on blockchain and a construction method thereof are disclosed, which not only can avoid data loss caused by single-point faults and reduce system maintenance cost, but also can prevent illegal tampering of patient diagnosis records when medical disputes occur, but can not realize authority classification for medical record requesters, have huge data on the chain and can not realize secondary supervision of local medical records.
Disclosure of Invention
In order to solve the problems, the invention provides a block chain-based medical electronic medical record distributed management system and a preparation method thereof, which can realize local encryption backup of medical records, whole record of medical record access and access authority setting based on attribute level relation, and the whole chain has a simple data structure.
The invention discloses a block chain-based medical electronic medical record distributed management system, which comprises a storage and access management module, wherein the storage and access management module comprises an IPFS cloud storage system, an access front end communicated with the IPFS cloud storage system, a local encryption storage system used for mutually encrypting and backing up the IPFS cloud storage system and the access front end, a block chain network used for recording interaction processes of the access front end and the IPFS cloud storage system and used for managing key node information of the IPFS cloud storage system.
Further, the storage and access management module is specifically as follows: the system comprises a distributed cloud storage server and a management gateway for managing the distributed cloud storage server; an access front end in communication with the management gateway; the access front end comprises an identity registration login module, a medical record reading module, a medical record generating module and a secret key generating module which are arranged under the identity registration login module, and an identity authentication module and a secret key decrypting module which are arranged under the medical record reading module;
the access front end stores the duration of the illness, firstly completes registration and registration of the patient through the identity registration and login module, generates a public key A and a private key A of the patient through the key generation module, diagnoses the patient in the doctor and generates a medical record, encrypts the medical record through the public key A and then uploads the medical record to the IPFS management gateway; making an intelligent medical record access contract based on attributes when uploading an encrypted medical record, and after the encrypted medical record is read by an IPFS management gateway, performing secondary encryption on the encrypted medical record through a public key B and returning the secondary encrypted medical record to a local server where an access front end is located; local backup data as under-chain anti-private tampering; simultaneously, the private key B is fed back to the patient side; the IPFS management gateway simultaneously blocks and hashes the encrypted medical records as different files and stores the encrypted medical records into a distributed cloud storage server; simultaneously, the patient ID, the medical record abstract the medical record access intelligent contract is hashed and then stored in a blockchain super account book; the block comprises a number, a block size, a previous block hash value, a current block hash value, a timestamp and a Merkle root or node key value of a medical record.
The access front end reads the duration of the illness, enters the identity authentication module through the medical record reading module, and sends a request to the IPFS management gateway after passing the authentication of the identity authentication module; the IPFS management gateway stores the access request into the blockchain through a timestamp; then, recovering the access intelligent contract of the read medical record, judging the authority, and inquiring the DHT table to restore the encrypted medical record file by the IPFS management gateway when the read authority is met, otherwise, rejecting the request; storing the authority judgment result into a blockchain through a timestamp; after the encrypted medical record file is returned to the access front end, the encrypted medical record file is decrypted by the private key A import key decryption module, and then the original medical record file is obtained.
Further, the access request and the authority determination result are indexed by a patient ID or a medical record ID, and the time is generated through a time stamp and stored in a blockchain.
Further, the identity authentication module specifically comprises: and carrying out identity authentication by a private key signature and public key signature verification mode.
Further, the medical record generation module comprises a medical institution for diagnosing the patient to be diagnosed and generating medical records, and also comprises a historical medicine purchase record account book generated by the self-input of the patient or the input of a pharmacy; when the access request of the access front end is a pharmacy, the medical record access intelligent contract is judged, and medical record or prescription data with the latest time stamp is returned.
A block chain-based medical electronic medical record distributed management system construction method specifically comprises the following steps:
constructing an interface layer, a business layer and a data layer, wherein the interface layer comprises a web interface and a mobile phone interface which are input and inquired by a patient, a medical institution and a third party institution; the business layer comprises a medical data access management module, an identity authentication module, an IPFS management gateway and a blockchain intelligent contract management module; the data layer is a cloud storage system based on IPFS and each node account of a blockchain interacting with the cloud storage system; the medical data input management module is communicated with the interface layer and is used for collecting data input by the access front end and feeding back the data to the access front end; the input data comprises identity registration data, identity verification data and medical record data; the feedback data comprises a verification result and a query result; the identity authentication module reads the identity authentication data and compares the identity authentication data with the library file, so that whether the identity is a legal request or not is confirmed, and front-end identity authentication is completed; the blockchain intelligent contract management module is used for managing contracts of medical record inquiry grade relations, and acquiring the identity attribute of an inquirer through the identity authentication module so as to trigger the corresponding medical record to access the intelligent contracts; the IPFS management gateway obtains medical record data of the corresponding authority through the cloud storage system; the IPFS management gateway stores the entire access process in the blockchain with a timestamp.
Further, after the business layer receives the identity registration data, an identity identification intelligent contract is established through a blockchain intelligent contract management module to conduct identity information verification or verification through a manual verification platform.
Compared with the prior art, the block chain-based medical electronic medical record distributed management system and the preparation method thereof can realize local encryption backup of medical records, the encryption backup is respectively encrypted by a medical institution and an IPFS management gateway, a private key patient himself stores the encryption backup, and tamper-proof local data backup is realized; the whole process record of the medical record access is adopted, and when the medical record access is carried out, the access permission is set based on the attribute level relation, so that the whole on-chain data structure is simple.
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Fig. 1 is a schematic view of the overall framework of the present invention.
Fig. 2 is a schematic diagram of the overall structure of the present invention.
Fig. 3 is a schematic diagram of the overall construction of the present invention.
Detailed Description
As shown in FIG. 1, the distributed management system for medical electronic medical records based on blockchain comprises a storage and access management module, wherein the storage and access management module comprises an IPFS cloud storage system, an access front end communicated with the IPFS cloud storage system, a local encryption storage system for mutually encrypting and backing up the IPFS cloud storage system and the access front end, a blockchain network for recording interaction processes of the access front end and the IPFS cloud storage system and for managing key node information of the IPFS cloud storage system.
As shown in fig. 2, the storage and access management module is specifically as follows: the system comprises a distributed cloud storage server and a management gateway for managing the distributed cloud storage server; an access front end in communication with the management gateway; the access front end comprises an identity registration login module, a medical record reading module, a medical record generating module and a secret key generating module which are arranged under the identity registration login module, and an identity authentication module and a secret key decrypting module which are arranged under the medical record reading module;
the access front end stores the duration of the illness, firstly completes registration and registration of the patient through the identity registration and login module, generates a public key A and a private key A of the patient through the key generation module, diagnoses the patient in the doctor and generates a medical record, encrypts the medical record through the public key A and then uploads the medical record to the IPFS management gateway; making an intelligent medical record access contract based on attributes when uploading an encrypted medical record, and after the encrypted medical record is read by an IPFS management gateway, performing secondary encryption on the encrypted medical record through a public key B and returning the secondary encrypted medical record to a local server where an access front end is located; local backup data as under-chain anti-private tampering; simultaneously, the private key B is fed back to the patient side; the IPFS management gateway simultaneously blocks and hashes the encrypted medical records as different files and stores the encrypted medical records into a distributed cloud storage server; simultaneously, the patient ID, the medical record abstract the medical record access intelligent contract is hashed and then stored in a blockchain super account book; the block comprises a number, a block size, a previous block hash value, a current block hash value, a timestamp and a Merkle root or node key value of a medical record.
The access front end reads the duration of the illness, enters the identity authentication module through the medical record reading module, and sends a request to the IPFS management gateway after passing the authentication of the identity authentication module; the IPFS management gateway stores the access request into the blockchain through a timestamp; then, recovering the access intelligent contract of the read medical record, judging the authority, and inquiring the DHT table to restore the encrypted medical record file by the IPFS management gateway when the read authority is met, otherwise, rejecting the request; storing the authority judgment result into a blockchain through a timestamp; after the encrypted medical record file is returned to the access front end, the encrypted medical record file is decrypted by the private key A import key decryption module, and then the original medical record file is obtained.
The access request and the authority judging result are indexed by the patient ID or the medical record ID, and the time is generated through the time stamp and stored in the blockchain. The identity authentication module specifically comprises: and carrying out identity authentication by a private key signature and public key signature verification mode. The medical record generation module comprises a medical institution for diagnosing a patient to be diagnosed and generating medical records, and also comprises a historical medicine purchasing record account book generated by the self-input of the patient or the input of a pharmacy; when the access request of the access front end is a pharmacy, the medical record access intelligent contract is judged, and medical record or prescription data with the latest time stamp is returned.
As shown in fig. 3, a block chain-based medical electronic medical record distributed management system construction method specifically comprises the following steps:
constructing an interface layer, a business layer and a data layer, wherein the interface layer comprises a web interface and a mobile phone interface which are input and inquired by a patient, a medical institution and a third party institution; the business layer comprises a medical data access management module, an identity authentication module, an IPFS management gateway and a blockchain intelligent contract management module; the data layer is a cloud storage system based on IPFS and each node account of a blockchain interacting with the cloud storage system; the medical data input management module is communicated with the interface layer and is used for collecting data input by the access front end and feeding back the data to the access front end; the input data comprises identity registration data, identity verification data and medical record data; the feedback data comprises a verification result and a query result; the identity authentication module reads the identity authentication data and compares the identity authentication data with the library file, so that whether the identity is a legal request or not is confirmed, and front-end identity authentication is completed; the blockchain intelligent contract management module is used for managing contracts of medical record inquiry grade relations, and acquiring the identity attribute of an inquirer through the identity authentication module so as to trigger the corresponding medical record to access the intelligent contracts; the IPFS management gateway obtains medical record data of the corresponding authority through the cloud storage system; the IPFS management gateway stores the entire access process in the blockchain with a timestamp.
After the business layer receives the identity registration data, an identity identification intelligent contract is established through a blockchain intelligent contract management module to conduct identity information auditing or auditing through a manual auditing platform.
The above embodiments are merely preferred embodiments of the present invention, and all changes and modifications that come within the meaning and range of equivalency of the structures, features and principles of the invention are therefore intended to be embraced therein.
Claims (5)
1. A medical electronic medical record distributed management system based on a blockchain is characterized in that: the system comprises a storage and access management module, a storage and access management module and a block chain network, wherein the storage and access management module comprises an IPFS (Internet protocol file system) cloud storage system, an access front end communicated with the IPFS cloud storage system, a local encryption storage system used for mutually encrypting and backing up the IPFS cloud storage system and the access front end, and a block chain network used for recording interaction processes of the access front end and the IPFS cloud storage system and used for managing key node information of the IPFS cloud storage system; the storage and access management module is specifically as follows: the system comprises a distributed cloud storage server and a management gateway for managing the distributed cloud storage server; an access front end in communication with the management gateway; the access front end comprises an identity registration login module, a medical record reading module, a medical record generating module and a secret key generating module which are arranged under the identity registration login module, and an identity authentication module and a secret key decrypting module which are arranged under the medical record reading module;
the access front end stores the duration of the illness, firstly completes registration and registration of the patient through the identity registration and login module, generates a public key A and a private key A of the patient through the key generation module, diagnoses the patient in the doctor and generates a medical record, encrypts the medical record through the public key A and then uploads the medical record to the IPFS management gateway; making an intelligent medical record access contract based on attributes when uploading an encrypted medical record, and after the encrypted medical record is read by an IPFS management gateway, performing secondary encryption on the encrypted medical record through a public key B and returning the secondary encrypted medical record to a local server where an access front end is located; local backup data as under-chain anti-private tampering; simultaneously, the private key B is fed back to the patient side; the IPFS management gateway simultaneously blocks and hashes the encrypted medical records as different files and stores the encrypted medical records into a distributed cloud storage server; simultaneously, the patient ID, the medical record abstract the medical record access intelligent contract is hashed and then stored in a blockchain super account book; the block comprises a number, a block size, a previous block hash value, a current block hash value, a time stamp and a Merkle root or node key value of medical record;
the access front end reads the duration of the illness, enters the identity authentication module through the medical record reading module, and sends a request to the IPFS management gateway after passing the authentication of the identity authentication module; the IPFS management gateway stores the access request into the blockchain through a timestamp; then, recovering the access intelligent contract of the read medical record, judging the authority, and inquiring the DHT table to restore the encrypted medical record file by the IPFS management gateway when the read authority is met, otherwise, rejecting the request; storing the authority judgment result into a blockchain through a timestamp; after the encrypted medical record file is returned to the access front end, the encrypted medical record file is decrypted by the private key A import key decryption module, so that the original medical record file is obtained; the access request and the authority judging result are indexed by patient ID or medical record ID, and the time is generated through a time stamp and stored in the blockchain.
2. The blockchain-based medical electronic medical record distributed management system of claim 1, wherein: the identity authentication module specifically comprises: and carrying out identity authentication by a private key signature and public key signature verification mode.
3. The blockchain-based medical electronic medical record distributed management system of claim 1, wherein: the medical record generation module comprises a medical institution for diagnosing a patient to be diagnosed and generating medical records, and also comprises a historical medicine purchasing record account book generated by the self-input of the patient or the input of a pharmacy; when the access request of the access front end is a pharmacy, the medical record access intelligent contract is judged, and medical record or prescription data with the latest time stamp is returned.
4. A method for constructing a distributed management system for medical electronic medical records based on a blockchain as defined in any one of claims 1-3, which is characterized in that: the method comprises the following steps: constructing an interface layer, a business layer and a data layer, wherein the interface layer comprises a web interface and a mobile phone interface which are input and inquired by a patient, a medical institution and a third party institution; the business layer comprises a medical data access management module, an identity authentication module, an IPFS management gateway and a blockchain intelligent contract management module; the data layer is a cloud storage system based on IPFS and each node account of a blockchain interacting with the cloud storage system; the medical data input management module is communicated with the interface layer and is used for collecting data input by the access front end and feeding back the data to the access front end; the input data comprises identity registration data, identity verification data and medical record data; the feedback data comprises a verification result and a query result; the identity authentication module reads the identity authentication data and compares the identity authentication data with the library file, so that whether the identity is a legal request or not is confirmed, and front-end identity authentication is completed; the blockchain intelligent contract management module is used for managing contracts of medical record inquiry grade relations, and acquiring the identity attribute of an inquirer through the identity authentication module so as to trigger the corresponding medical record to access the intelligent contracts; the IPFS management gateway obtains medical record data of the corresponding authority through the cloud storage system; the IPFS management gateway stores the entire access process in the blockchain with a timestamp.
5. The blockchain-based medical electronic medical record distributed management system construction method of claim 4, wherein: after the business layer receives the identity registration data, an identity identification intelligent contract is established through a blockchain intelligent contract management module to carry out identity information verification or verification through a manual verification platform.
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| CN115021903B (en) * | 2022-05-23 | 2023-12-15 | 湖北工业大学 | Electronic medical record sharing method and system based on blockchain |
| CN115134378A (en) * | 2022-06-24 | 2022-09-30 | 郑州大学第一附属医院 | Block chain intelligent medical system |
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| CN116662291A (en) * | 2023-05-15 | 2023-08-29 | 上海交通大学 | Building material supply chain data management system and method based on block chain and IPFS |
| CN116525051A (en) * | 2023-06-29 | 2023-08-01 | 北京天健源达科技股份有限公司 | Electronic medical record processing method and device |
| CN117094034B (en) * | 2023-10-20 | 2023-12-15 | 金财数科(北京)信息技术有限公司 | Digital asset safe storage and use method |
| CN117675870B (en) * | 2024-01-31 | 2024-04-19 | 中国医学科学院北京协和医院 | Electronic medical record distributed sharing method and device based on blockchain |
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