CN112863629A - 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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- G16H10/00—ICT specially adapted for the handling or processing of patient-related medical or healthcare data
- G16H10/60—ICT specially adapted for the handling or processing of patient-related medical or healthcare data for patient-specific data, e.g. for electronic patient records
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- G06F11/14—Error detection or correction of the data by redundancy in operation
- G06F11/1402—Saving, restoring, recovering or retrying
- G06F11/1446—Point-in-time backing up or restoration of persistent data
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- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/60—Protecting data
- G06F21/62—Protecting access to data via a platform, e.g. using keys or access control rules
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Abstract
The invention discloses a distributed management system for medical electronic medical records based on a block chain, which comprises a storage and access management module, wherein the storage and access management module comprises an IPFS (internet protocol file system) based cloud storage system, an access front end communicated with the IPFS cloud storage system, a local encryption storage system used for mutual encryption backup of the IPFS cloud storage system and the access front end, a block chain network used for recording the interaction process 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 medical electronic medical record distributed management system based on the block chain and the preparation method thereof can realize local encrypted backup of medical records, wherein the encrypted backup is respectively subjected to double encryption through a medical institution and an IPFS management gateway, and a private key patient saves the private key, so that the local data backup of tamper resistance is realized; and the medical record is accessed to the whole record, and when the medical record is accessed, the access authority is set based on the attribute level relation, so that the data structure on the whole chain 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 a patient in the hospital diagnosis and treatment process, and comprises records of the patient's condition, treatment, medication, medical skill, expense and the like; the right of the electronic medical record should belong to the patient, but is stored in the hospital; there are the following problems: the electronic medical record belongs to personal privacy data, is monopolized by medical institutions at present, and has no right to know patients in the aspect of data utilization, even has the privacy disclosure problem; the problem of data sharing, namely how to safely and legally share the data of patients among different medical institutions during diagnosis and treatment is the current difficult problem; how to realize the issue of authorizing other departments to use by the patient; the problem of medical record data tamper resistance; data security problems, namely data loss and hidden danger of being attacked; data storage problems; the block chain adopts decentralized distributed book technology, has the advantages of distributed fault tolerance, no tampering 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 Taipei medical hospitals, a Medicalchain system of Mayo clinics in the United kingdom, a MedRec system in the United states and the like; again, as with chinese patent application No.: 201810910157.6, discloses a block chain-based distributed management system for medical electronic medical records and a construction method thereof, which can not only avoid data loss caused by single-point faults and reduce system maintenance cost, but also prevent the medical records of patients from being illegally tampered when medical disputes occur, but can not realize authority classification for medical record requesters, has numerous and miscellaneous 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 distributed management system for medical electronic medical records and a preparation method thereof, which can realize local encrypted backup of medical records, whole-course record of medical record access and access authority setting based on attribute level relation, and the whole chain has a simple data structure.
The distributed management system for the medical electronic medical record based on the block chain comprises a storage and access management module, 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 mutual encryption backup of the IPFS cloud storage system and the access front end, a block chain network used for recording the interaction process 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; and 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 generation module and a secret key generation module which are arranged under the identity registration login module, and an identity authentication module and a secret key decryption module which are arranged under the medical record reading module;
when the access front end stores a disease, the registration and registration of a patient are completed through the identity registration login module, a public key A and a private key A of the patient are generated through the key generation module, a medical institution diagnoses the patient to be treated and generates a medical record, and the access front end encrypts the medical record through the public key A and uploads the medical record to the IPFS management gateway; setting an attribute-based medical record access intelligent contract when uploading the encrypted medical record, and after reading the encrypted medical record, performing secondary encryption on the encrypted medical record through a public key B by the IPFS management gateway and returning the secondary encrypted medical record to a local server where an access front end is located; as local backup data for preventing private tampering under the chain; meanwhile, feeding back the private key B to the patient end; the IPFS management gateway simultaneously uses the encrypted medical records as different files to be subjected to blocking and hashing, and then stores the files into a distributed cloud storage server; meanwhile, the ID of the patient, the ID of the medical record, the abstract of the medical record and the intelligent contract for accessing the medical record are hashed and stored in a block chain super account book; the block includes 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 the medical record.
When the access front end reads the duration of the disease, the access front end enters the identity authentication module through the medical record reading module, and after the access front end passes the authentication of the identity authentication module, the access front end sends a request to the IPFS management gateway; the IPFS management gateway stores the access request into the block chain through a timestamp; then, the medical record access intelligent contract is recovered to be read, the authority judgment is carried out, when the reading authority is met, the IPFS management gateway restores the encrypted medical record file by inquiring the DHT table, and otherwise, the request is rejected; storing the permission judgment result into a block chain through a timestamp; and after the encrypted medical record file is returned to the access front end, the encrypted medical record file is imported into the key decryption module through the private key A to be decrypted, and then the original medical record file is obtained.
Furthermore, the access request and the authority judgment result are indexed by a patient ID or a medical record ID, and time is generated by a time stamp and is stored in the block chain.
Further, the identity authentication module specifically includes: identity authentication is carried out in a private key signature and public key signature verification mode.
Further, the medical record generation module comprises a medical institution for diagnosing patients and generating medical records, and also comprises a historical medicine purchasing record book which is input by the patients or input by a pharmacy and generated; and when the access request of the access front end is a pharmacy, the medical record access intelligent contract judges and returns the medical record or prescription data with the latest timestamp.
A construction method of a medical electronic medical record distributed management system based on a block chain is disclosed, which comprises the following steps:
establishing an interface layer, a business layer and a data layer, wherein the interface layer comprises a web interface and a mobile phone interface for inputting and inquiring of patients, medical institutions and third-party institutions; the service layer comprises a medical data access management module, an identity authentication module, an IPFS management gateway and a block chain intelligent contract management module; the data layer is a cloud storage system based on IPFS, and a block chain each node account book interacted 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 identity authentication data and compares the identity authentication data with the library file so as to confirm whether the identity is a legal request or not and complete front-end identity authentication; the block chain intelligent contract management module is used for managing contracts of medical record query grade relations, and acquiring identity attributes of inquirers through the identity authentication module, so that corresponding medical record access intelligent contracts are triggered; the IPFS management gateway acquires medical record data of corresponding authority through a cloud storage system; and the IPFS management gateway stores the whole access process into the block chain through a time stamp.
Furthermore, after receiving the identity registration data, the service layer establishes an identity recognition intelligent contract through a block chain intelligent contract management module to perform identity information verification or manual verification platform verification.
Compared with the prior art, the block chain-based distributed management system for the medical electronic medical record and the preparation method thereof can realize local encrypted backup of the medical record, wherein the encrypted backup is respectively subjected to double encryption through a medical institution and an IPFS (Internet protocol file system) management gateway, and a private key patient saves the encrypted backup to realize anti-tampering local data backup; and the medical record is accessed to the whole record, and when the medical record is accessed, the access authority is set based on the attribute level relation, so that the data structure on the whole chain is simple.
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Fig. 1 is a general framework schematic of the present invention.
Fig. 2 is a schematic view of the overall structure of the present invention.
Fig. 3 is a schematic view of the overall construction structure of the present invention.
Detailed Description
As shown in fig. 1, a distributed management system for medical electronic medical records based on a blockchain includes a storage and access management module, where the storage and access management module includes an IPFS-based cloud storage system, an access front end in communication with the IPFS cloud storage system, a local encryption storage system for mutual encryption backup between the IPFS cloud storage system and the access front end, and a blockchain network for recording an interaction process between 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 specifically includes: the system comprises a distributed cloud storage server and a management gateway for managing the distributed cloud storage server; and 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 generation module and a secret key generation module which are arranged under the identity registration login module, and an identity authentication module and a secret key decryption module which are arranged under the medical record reading module;
when the access front end stores a disease, the registration and registration of a patient are completed through the identity registration login module, a public key A and a private key A of the patient are generated through the key generation module, a medical institution diagnoses the patient to be treated and generates a medical record, and the access front end encrypts the medical record through the public key A and uploads the medical record to the IPFS management gateway; setting an attribute-based medical record access intelligent contract when uploading the encrypted medical record, and after reading the encrypted medical record, performing secondary encryption on the encrypted medical record through a public key B by the IPFS management gateway and returning the secondary encrypted medical record to a local server where an access front end is located; as local backup data for preventing private tampering under the chain; meanwhile, feeding back the private key B to the patient end; the IPFS management gateway simultaneously uses the encrypted medical records as different files to be subjected to blocking and hashing, and then stores the files into a distributed cloud storage server; meanwhile, the ID of the patient, the ID of the medical record, the abstract of the medical record and the intelligent contract for accessing the medical record are hashed and stored in a block chain super account book; the block includes 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 the medical record.
When the access front end reads the duration of the disease, the access front end enters the identity authentication module through the medical record reading module, and after the access front end passes the authentication of the identity authentication module, the access front end sends a request to the IPFS management gateway; the IPFS management gateway stores the access request into the block chain through a timestamp; then, the medical record access intelligent contract is recovered to be read, the authority judgment is carried out, when the reading authority is met, the IPFS management gateway restores the encrypted medical record file by inquiring the DHT table, and otherwise, the request is rejected; storing the permission judgment result into a block chain through a timestamp; and after the encrypted medical record file is returned to the access front end, the encrypted medical record file is imported into the key decryption module through the private key A to be decrypted, and then the original medical record file is obtained.
The access request and the permission judgment result are indexed by a patient ID or a medical record ID, and time is generated by a time stamp and is stored in the block chain. The identity authentication module specifically comprises: identity authentication is carried out in a private key signature and public key signature verification mode. The medical record generation module comprises a medical institution for diagnosing patients and generating medical records, and also comprises a historical medicine purchasing record book generated by patient self input or pharmacy input; and when the access request of the access front end is a pharmacy, the medical record access intelligent contract judges and returns the medical record or prescription data with the latest timestamp.
As shown in fig. 3, a method for constructing a distributed management system for medical electronic medical records based on a blockchain specifically includes the following steps:
establishing an interface layer, a business layer and a data layer, wherein the interface layer comprises a web interface and a mobile phone interface for inputting and inquiring of patients, medical institutions and third-party institutions; the service layer comprises a medical data access management module, an identity authentication module, an IPFS management gateway and a block chain intelligent contract management module; the data layer is a cloud storage system based on IPFS, and a block chain each node account book interacted 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 identity authentication data and compares the identity authentication data with the library file so as to confirm whether the identity is a legal request or not and complete front-end identity authentication; the block chain intelligent contract management module is used for managing contracts of medical record query grade relations, and acquiring identity attributes of inquirers through the identity authentication module, so that corresponding medical record access intelligent contracts are triggered; the IPFS management gateway acquires medical record data of corresponding authority through a cloud storage system; and the IPFS management gateway stores the whole access process into the block chain through a time stamp.
After receiving the identity registration data, the business layer establishes an identity recognition intelligent contract through a block chain intelligent contract management module to carry out identity information verification or manual verification platform verification.
The above-described embodiments are merely preferred embodiments of the present invention, and all equivalent changes or modifications of the structure, features and principles described in the claims of the present invention are included in the scope of the present invention.
Claims (7)
1. A medical electronic medical record distributed management system based on a block chain is characterized in that: the storage and access management module comprises an IPFS (internet protocol file system) based cloud storage system, an access front end communicated with the IPFS cloud storage system, a local encryption storage system used for mutual encryption backup of the IPFS cloud storage system and the access front end, a block chain network used for recording the interaction process of the access front end and the IPFS cloud storage system and used for managing key node information of the IPFS cloud storage system.
2. The distributed management system for medical electronic medical record based on block chain as claimed in claim 1, wherein: 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; and 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 generation module and a secret key generation module which are arranged under the identity registration login module, and an identity authentication module and a secret key decryption module which are arranged under the medical record reading module;
when the access front end stores a disease, the registration and registration of a patient are completed through the identity registration login module, a public key A and a private key A of the patient are generated through the key generation module, a medical institution diagnoses the patient to be treated and generates a medical record, and the access front end encrypts the medical record through the public key A and uploads the medical record to the IPFS management gateway; setting an attribute-based medical record access intelligent contract when uploading the encrypted medical record, and after reading the encrypted medical record, performing secondary encryption on the encrypted medical record through a public key B by the IPFS management gateway and returning the secondary encrypted medical record to a local server where an access front end is located; as local backup data for preventing private tampering under the chain; meanwhile, feeding back the private key B to the patient end; the IPFS management gateway simultaneously uses the encrypted medical records as different files to be subjected to blocking and hashing, and then stores the files into a distributed cloud storage server; meanwhile, the ID of the patient, the ID of the medical record, the abstract of the medical record and the intelligent contract for accessing the medical record are hashed and stored in a block chain super account book; the block comprises a number, a block size, a hash value of a previous block, a hash value of a current block, a timestamp and a Merkle root or node key value of a medical record;
when the access front end reads the duration of the disease, the access front end enters the identity authentication module through the medical record reading module, and after the access front end passes the authentication of the identity authentication module, the access front end sends a request to the IPFS management gateway; the IPFS management gateway stores the access request into the block chain through a timestamp; then, the medical record access intelligent contract is recovered to be read, the authority judgment is carried out, when the reading authority is met, the IPFS management gateway restores the encrypted medical record file by inquiring the DHT table, and otherwise, the request is rejected; storing the permission judgment result into a block chain through a timestamp; and after the encrypted medical record file is returned to the access front end, the encrypted medical record file is imported into the key decryption module through the private key A to be decrypted, and then the original medical record file is obtained.
3. The distributed management system for medical electronic medical record based on block chain as claimed in claim 1, wherein: and the access request and the authority judgment result are indexed by a patient ID or a medical record ID, and time is generated by a timestamp and is stored in the block chain.
4. The distributed management system for medical electronic medical record based on block chain as claimed in claim 1, wherein: the identity authentication module specifically comprises: identity authentication is carried out in a private key signature and public key signature verification mode.
5. The distributed management system for medical electronic medical record based on block chain as claimed in claim 1, wherein: the medical record generation module comprises a medical institution for diagnosing patients and generating medical records, and also comprises a historical medicine purchasing record book generated by patient self input or pharmacy input; and when the access request of the access front end is a pharmacy, the medical record access intelligent contract judges and returns the medical record or prescription data with the latest timestamp.
6. A construction method of a medical electronic medical record distributed management system based on a block chain is characterized by comprising the following steps: the method specifically comprises the following steps:
establishing an interface layer, a business layer and a data layer, wherein the interface layer comprises a web interface and a mobile phone interface for inputting and inquiring of patients, medical institutions and third-party institutions; the service layer comprises a medical data access management module, an identity authentication module, an IPFS management gateway and a block chain intelligent contract management module; the data layer is a cloud storage system based on IPFS, and a block chain each node account book interacted 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 identity authentication data and compares the identity authentication data with the library file so as to confirm whether the identity is a legal request or not and complete front-end identity authentication; the block chain intelligent contract management module is used for managing contracts of medical record query grade relations, and acquiring identity attributes of inquirers through the identity authentication module, so that corresponding medical record access intelligent contracts are triggered; the IPFS management gateway acquires medical record data of corresponding authority through a cloud storage system; and the IPFS management gateway stores the whole access process into the block chain through a time stamp.
7. The method for constructing the distributed management system of the medical electronic medical record based on the block chain as claimed in claim 6, wherein: and after receiving the identity registration data, the business layer establishes an identity recognition intelligent contract through the block chain intelligent contract management module to carry out identity information verification or verification through a manual verification platform.
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| CN115021903A (en) * | 2022-05-23 | 2022-09-06 | 湖北工业大学 | Electronic medical record sharing method and system based on block chain |
| WO2023246400A1 (en) * | 2022-06-24 | 2023-12-28 | 郑州大学第一附属医院 | Blockchain-based intelligent medical system |
| CN115499193B (en) * | 2022-09-14 | 2024-02-13 | 西南石油大学 | Country travel passenger privacy protection system and method based on blockchain |
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| CN116052832A (en) * | 2023-04-03 | 2023-05-02 | 青岛市妇女儿童医院（青岛市妇幼保健院、青岛市残疾儿童医疗康复中心、青岛市新生儿疾病筛查中心） | Tamper-proof transmission method based on medical information |
| 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 |
| CN117094034A (en) * | 2023-10-20 | 2023-11-21 | 金财数科(北京)信息技术有限公司 | Digital asset safe storage and use method |
| 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 |
| CN117675870A (en) * | 2024-01-31 | 2024-03-08 | 中国医学科学院北京协和医院 | Electronic medical record distributed sharing method and device based on blockchain |
| 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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