CN109243548A - A kind of medical data platform based on block chain technology - Google Patents

A kind of medical data platform based on block chain technology Download PDF

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CN109243548A
CN109243548A CN201810963102.1A CN201810963102A CN109243548A CN 109243548 A CN109243548 A CN 109243548A CN 201810963102 A CN201810963102 A CN 201810963102A CN 109243548 A CN109243548 A CN 109243548A
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medical
block chain
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patient
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陈涛
童怀
邓远钊
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Guangdong University of Technology
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    • GPHYSICS
    • G16INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
    • G16HHEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING OR PROCESSING OF MEDICAL OR HEALTHCARE DATA
    • G16H10/00ICT specially adapted for the handling or processing of patient-related medical or healthcare data
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/01Protocols
    • H04L67/10Protocols in which an application is distributed across nodes in the network
    • H04L67/1097Protocols in which an application is distributed across nodes in the network for distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/01Protocols
    • H04L67/12Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/30Public key, i.e. encryption algorithm being computationally infeasible to invert or user's encryption keys not requiring secrecy
    • H04L9/3066Public key, i.e. encryption algorithm being computationally infeasible to invert or user's encryption keys not requiring secrecy involving algebraic varieties, e.g. elliptic or hyper-elliptic curves

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Abstract

The invention discloses a kind of medical data platforms based on block chain technology, comprising: terminal, server module, data memory module and block chain network;Terminal carries out data interaction by server module and data memory module and block chain network;Server module includes the communication server, intermediate certificate server and root certificate server, for handling the data interaction between modules and distributing certificate to block chain network node;Data memory module includes medical information system and distributed image database, for carrying out data storage;Block chain network includes several mechanism accounting nodes and several common recognition nodes, and it is synchronous that accounting nodes mutually carry out data.The advantage of the invention is that; the storage of existing medical information is shared in account book to block chain; allow each medical institutions that can share the relevant medical information of its patient; and the privacy protection function of medical data is realized using Encryption Algorithm, promote the safety that sensitive information is protected while medical data is shared.

Description

A kind of medical data platform based on block chain technology
Technical field
The present invention relates to block chain application fields, flat more particularly, to a kind of medical data based on block chain technology Platform.
Background technique
Currently, now, with the fast development of information technology, domestic more and more hospitals just accelerate to implement based on information Change the construction of platform, HIS system, to improve the service level and core competitiveness of hospital.Although most domestic hospital is real Now medical data informationization is shared in this hospital, but transfers from one hospital to another or when other institute's further consultation when patient faces, or using original Papery case history and CT, nuclear magnetic resonance image film etc.;On the one hand because of the limitation of papery case, prevent doctor is from institute Some medical informations (such as clinical information) are at large recorded in papery case, so that diagnosis efficiency is lower, (doctor is letter Breath is recorded in papery case inefficiency);On the other hand, since medical image film is medical thermo-chromatic, if there is folding, Gravity squeezes, the improper processing behavior such as friction easily causes artificial artifact and electrostatic between film, so that patient's history image Data damage, results in the need for re-starting coherence check, occupies unnecessary doctor while increasing the medical treatment cost of patient Treat resource;The shared of the medical information between more hospitals is seriously constrained, so that the available data that doctor diagnoses patient subtracts It is few, it further may cause doctor and misestimate patient medical history, increase the probability of mistaken diagnosis.Simultaneously because the centralization of hospital medical information Management increases a possibility that medical information is revealed, Er Qiezhong so that medical data is easy internal leakage and by hacker attack Heart management reduces the redundancy ability of medical data.
A kind of Medically Oriented Data System is disclosed in patent " Medically Oriented Data System ".The system includes area medical data Multiple medical servers that center is connect with the regional medical data center.Multiple medical institution servers correspond respectively to region Multiple medical institutions of interior medical data center administration.Medical institution server takes for storing patient in the medical institutions The medical data being engaged in the corresponding medical institutions of device.Medical data therein is corresponding with the Identity Code of patient.Region doctor Treating data center includes information storage module, for storing the address information of multiple medical institution servers, the identity mark of patient Know code and medical data corresponding with the medical information in multiple medical institution servers index.And the identity mark of patient Knowing code is unique in regional medical data center administrative area.Information storage module, for multiple medical treatment in storage region In the address information of authority server, region effectively in patient identity identification code and region in multiple medical institution servers Medical data corresponding medical data index.The invention is so that the inter-agency medical number that can share patient of different medical According to effectively overcoming between medical institutions the technological deficiency of " information island ".But the privacy not certain due to the system Preservation tactics may suffer from attacking, calibration-based hearing loss evaluation caused to be revealed, and there are the risks that patient information is abused.
Summary of the invention
The present invention is so that the inter-agency medical data that can share patient of different medical, overcomes between above-mentioned medical institutions The technological deficiency of " information island " provides a kind of medical data platform based on block chain technology.
In order to solve the above technical problems, technical scheme is as follows:
A kind of medical data platform based on block chain technology, comprising: terminal, server module, data memory module and Block chain network;
The terminal carries out data interaction by server module and data memory module and block chain network;
The server module includes the communication server, intermediate certificate server and root certificate server, the communication server For handling the data interaction between modules, root certificate server is used for Store Credentials information, and intermediate certificate server is used Certificate is distributed in processing block chain network nodal information, and to block chain network node;
The data memory module includes medical information system and distributed image database, and medical information system is for depositing Medical data is stored up, distributed image database stores image data into block chain network node;
The block chain network include several mechanism accounting nodes and several common recognition nodes, accounting nodes constitute described in Block chain network, carrying out the accounting nodes in block chain network mutually, data are synchronous, and each accounting nodes are both needed to when updating Common recognition verification operation is carried out by node of knowing together, its by the content synchronization of update into block chain network again after being verified Remaining accounting nodes.
Further, the block chain network building process specifically includes the following steps:
S21. several medical institutions in region respectively represent each node in block chain network, pass through the node Configuration file, the organizational information for the block chain network that change needs to create, multiple therapeutic machines including participating in the network in region The information of structure, the selection information for sort algorithm of knowing together and the application related information that block chain is operated;
S22. the executable program for passing through Hyperledger Fabric block chain technological frame, starts block chain network;
There are corresponding block chain node in each medical institutions in region, are operated using the block chain in each medical institutions Client is connected to the medical information system in medical institutions by communication service module, the corresponding medical data of patient JSON serializes character string as VALUE value and patient basis as KEY value, is corresponded to by channel in block chain network Chain code relevant to submission, be submitted in the current block of medical data block chain network.
Further, medical institutions' information system is used to store the doctor of the clinical treatment of each department in medical institutions Data are treated, specifically includes the following steps:
S31. IHE XDS technological frame is used, to the medical information system of several medical institutions in block chain network, Work out the clinical electronic health record Integrated Solution of medical institutions;
S32. the existing medical information system API for passing through medical institutions, facing patient basis and during going to a doctor Bed electronic health record export;
S33. the medical image information of patient is stored into distributed image database;
S34. the clinic of the unique index the corresponding image information of patient in distributed image database and the patient Electronic health record information and patient basis are integrated into the JSON file of structuring, and are stored in medical information system;
S35. the JSON file of the step S5 is serialized, generates the word of the VALUE value as database purchase Symbol string, while using patient basis's character string as KEY value, generate the KEY-VALUE of patient information and patient medical data To and be stored in medical information system.
Further, the specific storing process of the step S33 and S34 is as follows:
Using the existing medical information system of medical institutions, by the API of Medical Imaging System, corresponding patient medical number According to medical image file export, be stored in the distributed data base that each medical institutions member is had in block chain network In;
Wherein, the distributed data base passes through SequoiaDB database realizing, the medical image point of each medical institutions Cloth database data consistency is realized by the Raft distributed algorithm that SequoiaDB distributed data base system embeds;
When storing the medical image file of patient, using SHA256 hash algorithm, 256 cryptographic Hash are generated;? The cryptographic Hash and distributed data base store together to patient information corresponding structuring JSON file the index of this document In.
Further, the medical data is protected by following encrypting and decrypting process;
In block chain network, before block chain is written in patient medical data, by elliptic curve encryption algorithm to storing The character string of patient information is encrypted, and is written in the block of medical data block chain network using chain code, by encipherer Store decruption key;When decryption, data deciphering reduction is carried out by the decryption code key.
Further, the access of the medical data and shared procedure are specific as follows:
Chain code in each medical institutions' block chain network in sharing channel writes chain code, utilizes chain code To inquire the shared account book information of Hyperledger Ledger block chain network be added;Block chain participant's angle is in correlation The chain code for being packed into inquiry in the client of medical institutions operator, increasing medical information has when patient goes to a doctor again The operator of permission inquires with the client or increases patient's related medical number in the shared account book of block chain network According to;
The shared account book of block chain network is the ordered record of each healthcare structure patient assessment information in block chain network That is the addition of calibration-based hearing loss evaluation, and patient per is medical can all generate the secondary diagnosis information and the key assignments of patient basis It is right, it is saved in block chain for submitting to account book;
Block chain network uses LevelDB as key value database, is inquired using key inquiry, query composition and range of key values Method inquires patient information in Hyperledger Fabric block chain account book.
Further, the user management of the medical data platform is specially the Identity Management of medical data operator;
Wherein, standard is encapsulated by X.509 digital certificate, operator in medical institutions is affiliated in block chain network Medical institutions' information, the department name in medical institutions, role's title and the self-identity information of the operator carry out Encapsulation generates the unique digital certificate based on X.509 format;
The region chain network is the block chain network based on Hyperledger Fabric frame, in Hyperledger The MSP component carried in Fabric frame using frame uses operator's certificate in each medical institutions as authoritative institution Configuration information carry out rule and permission formulate, for verify participation block chain network operator identity information.
Compared with prior art, the beneficial effect of technical solution of the present invention is:
The Hyperledger Fabric block chain technological frame that the present invention uses, belongs to alliance's chain, is a license Network, all participants be all it is known, have the certain transparency and safety.If there is new medical institutions or group When the person of being made into needs to be added in the network, most of member could complete after agreeing to and permitting in only former block chain network, Completely cut off the addition of malice member and the destruction to the block chain network, reduces the risk of patient information leakage.
The present invention utilizes Hyperledger Fabric block chain technological frame, and it is original to integrate multiple medical institutions in region Medical information system so that the storage of original medical information allows each into the shared account book of block chain in multiple medical institutions Medical institutions can share the relevant medical information of its patient, and the secret protection of medical data is realized using Encryption Algorithm etc. Function promotes the safety that patient's sensitive information is protected while medical data is shared.Due in block chain network account book every A medical institutions are all disaster tolerances that is shared, therefore improving medical data to a certain extent, so that patient medical data has Higher safety.
The very important medical image data for diagnosis nondestructively stores into region each medical institutions Distributed image database in, while the index storage the cryptographic Hash of image file and in distributed data base is to area In block chain, while the long-term preservation of the medical image data of guarantee and region Nei Duo medical institutions share, with the peace of block chain Omnicharacteristic protects the medical personal secrets of patient.
Because Hyperledger Fabric block chain network uses LevelDB as key value database in the present invention, can To use the querying methods abundant such as key inquiry, query composition and range of key values inquiry to Hyperledger Fabric block chain Patient information is inquired in account book.Further improve the efficiency that patient medical data shares.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with It obtains other drawings based on these drawings.
Fig. 1 is the medical data platform structure schematic diagram based on block chain technology.
Fig. 2 is the data sharing flow diagram of the medical data platform based on block chain technology.
Specific embodiment
The attached figures are only used for illustrative purposes and cannot be understood as limitating the patent;
To those skilled in the art, it is to be understood that certain known features and its explanation, which may be omitted, in attached drawing 's.
The following further describes the technical solution of the present invention with reference to the accompanying drawings and examples.
A kind of medical data platform based on block chain technology, structure are as shown in Figure 1, comprising: terminal, server mould Block, data memory module and block chain network;
The terminal carries out data interaction by server module and data memory module and block chain network;
The server module includes the communication server, intermediate certificate server and root certificate server, the communication server For handling the data interaction between modules, root certificate server is used for Store Credentials information, and intermediate certificate server is used Certificate is distributed in processing block chain network nodal information, and to block chain network node;
It is client, hospital doctor specifically, establishing a communication server in each medical institutions in block chain network It treats and establishes a bridge between information system, block chain network and certificate server.Realize client to block chain share account book with And the access of hospital medical information system, while certificate management module being cooperated to be that each client distributes corresponding certificate;Simultaneously It is built-in in intermediate certificate server and root certificate server by utilizing Hyperledger Fabric block chain technological frame Fabric CA node is that each node distributes relevant certificate in block chain network;
The data memory module includes medical information system and distributed image database, and medical information system is for depositing Medical data is stored up, distributed image database stores image data into block chain network node;
Specifically, a medicine is established in each medical institutions in region using SequoiaDB distributed data base Image database, patient image's data storage into database, and by communication service module and client image data Cryptographic Hash and index storage into block chain;
The block chain network include several mechanism accounting nodes and several common recognition nodes, accounting nodes constitute described in Block chain network, carrying out the accounting nodes in block chain network mutually, data are synchronous, and each accounting nodes are both needed to when updating Common recognition verification operation is carried out by node of knowing together, its by the content synchronization of update into block chain network again after being verified Remaining accounting nodes;
Specifically, utilizing Hyperledger Fabric block chain technological frame, it is established that the base region of block chain network Block chain underlying services.Corresponding API Calls interface is provided for upper layer application, realizes that multiple medical institutions are collectively formed one in region The shared block chain network of a medical data.The common recognition service of block chain account book is provided simultaneously, guarantees what each medical institutions submitted It is synchronous in the account book of medical information over the entire network, and ensure just to update account book after suitable participant agrees to.Use base In the communication network (gRPC) of P2P, the letter in block chain network between each medical institutions' node is realized by the message of HTTP Breath transmission.
In one embodiment, the block chain network building process specifically includes the following steps:
S21. several medical institutions in region respectively represent each node in block chain network, pass through the node Configuration file, the organizational information for the block chain network that change needs to create, multiple therapeutic machines including participating in the network in region The information of structure, the selection information for sort algorithm of knowing together and the application related information that block chain is operated;
S22. the executable program for passing through Hyperledger Fabric block chain technological frame, starts block chain network;
There are corresponding block chain node in each medical institutions in region, are operated using the block chain in each medical institutions Client is connected to the medical information system in medical institutions by communication service module, the corresponding medical data of patient JSON serializes character string as VALUE value and patient basis as KEY value, is corresponded to by channel in block chain network Chain code relevant to submission, be submitted in the current block of medical data block chain network.
Specifically, firstly, multiple medical institutions respectively represent one in Hyperledger Fabric tissue in region, By modifying the configuration file of the wound generation block of Hyperledger Fabric, the block link network that we need to create can be changed In organizational information, that is, region of network participate in the network multiple medical institutions information, know together sort algorithm selection information, with And to the application related information etc. that block chain is operated.Then pass through Hyperledger Fabric block chain technology frame The related executable program of frame starts our block chain network.There are corresponding block chain link in each medical institutions in region Point operates client using the block chain in some medical institutions, is connected to medical institutions by a communication service module Interior medical information system, the medical information JSON serializing character string of corresponding patient is basic as VALUE value and patient Information is submitted as KEY value by the corresponding chain code relevant to submission in channel in Hyperledger Fabric block chain Into the current block of medical information block chain network.
In one embodiment, medical institutions' information system is used to store the clinic of each department in medical institutions The medical data for the treatment of, specifically includes the following steps:
S31. IHE XDS technological frame is used, to the medical information system of several medical institutions in block chain network, Work out the clinical electronic health record Integrated Solution of medical institutions;
S32. the existing medical information system API for passing through medical institutions, facing patient basis and during going to a doctor Bed electronic health record export;
S33. the medical image information of patient is stored into distributed image database;
S34. the clinic of the unique index the corresponding image information of patient in distributed image database and the patient Electronic health record information and patient basis are integrated into the JSON file of structuring, and are stored in medical information system;
S35. the JSON file of the step S5 is serialized, generates the word of the VALUE value as database purchase Symbol string, while using patient basis's character string as KEY value, generate the KEY-VALUE of patient information and patient medical data To and be stored in medical information system.
Specifically, because we need to be used for the medical data storage of medical institutions multiple in the same area into block chain It is shared, and there may be the medical information system of different vendor inside different medical institutions, each system be responsible for storage and Retrieve the clinical medical data of patient's diagnosis and treatment process difference department in medical institutions.Firstly, we are first to multiple in the region The medical information system application IHE XDS technological frame of medical institutions, works out the clinical electronic health record Integrated Solution of medical institutions. The clinical electronic health record of patient basis and medical period are led by medical institutions existing medical information system API Out, one is stored in be conducive in the structuring JSON file that block chain network is packaged.Then, the medical image of patient is believed Breath, it is contemplated that the reliability of the relationship between quality of medical image to medical diagnosis, therefore medical image data cannot use common figure Picture compression algorithm (such as JEPG algorithm) is compressed, and certainly will will result in the medical image information occupied space mistake of patient in this way Greatly;If so big patient information is stored into block chain, the write-in and inquiry velocity of calibration-based hearing loss evaluation are inherently allowed Problem that is slack-off, causing calibration-based hearing loss evaluation not share efficiently;For this problem, our multiple medical institutions in region In each medical institutions establish the node of a distributed data base, the biggish medical image information of data volume is stored in In the distributed data base.The finally unique index the corresponding image information of particular patient in distributed data base and the trouble The clinical electronic health record information of person and patient basis are stored using the JSON format of structuring.Finally to storing The JSON file of calibration-based hearing loss evaluation is serialized, and VALUE value of the character string as database purchase, while handle are generated Patient basis's character string generates KEY-VALUE pairs of patient information and calibration-based hearing loss evaluation as KEY value.Thus just Generated calibration-based hearing loss evaluation data.
In one embodiment, the specific storing process of the step S33 and S34 is as follows:
Using the existing medical information system of medical institutions, by the API of Medical Imaging System, corresponding patient medical number According to medical image file export, be stored in the distributed data base that each medical institutions member is had in block chain network In;
Wherein, the distributed data base passes through SequoiaDB database realizing, the medical image point of each medical institutions Cloth database data consistency is realized by the Raft distributed algorithm that SequoiaDB distributed data base system embeds;
When storing the medical image file of patient, using SHA256 hash algorithm, 256 cryptographic Hash are generated;? The cryptographic Hash and distributed data base store together to patient information corresponding structuring JSON file the index of this document In.
Specifically, using the existing medical information system of medical institutions, by the API of relevant Medical Imaging System, The medical image file export of corresponding patient medical data, is stored in what each medical institutions member in block chain network was had In distributed data base.For distributed data base, SequoiaDB database is can be used to realize in we, each therapeutic machine The medical image distributed data base data consistency of structure is distributed by the Raft that SequoiaDB distributed data base system embeds Algorithm is realized.Then 256 Hash are generated using SHA256 hash algorithm for the medical image file of corresponding patient Value;The cryptographic Hash is arrived the corresponding structuring JSON of patient information to the index storage of this document together with distributed data base In file.Storage cryptographic Hash can ensure that block chain outside distorts any of file after JSON file storage is to block chain It can be detected by related side.
In one embodiment, the medical data is protected by following encrypting and decrypting process;
In block chain network, before block chain is written in patient medical data, by elliptic curve encryption algorithm to storing The character string of patient information is encrypted, and is written in the block of medical data block chain network using chain code, by encipherer Store decruption key;When decryption, data deciphering reduction is carried out by the decryption code key.
Specifically, in Hyperledger Fabric block chain network, patient medical data is write from the point of view of patient's angle It is to store patient by ECC algorithm (Elliptic Curves Cryptography, elliptic curve cryptography) before entering block chain The serializing character string of information is encrypted, and corresponding chain code is then recycled to be written to the area of medical information block chain network In block.Due to the step for be to be completed before patient information is added to medical information data block, so when we are adding After close medical information is added in block chain account book, code key can only be decrypted accordingly by encipherer could ciphertext data.
From the point of view of medical institutions' angle, firstly, Hyperledger Fabric is a kind of block chain technology of alliance's chain That is Hyperledger Fabric network is privately owned, the publicly-owned chain such as bit coin that can be added relative to everybody It says, most medical institutions agree to just be added to the block chain network only in Hyperledger Fabric block chain network In, completely cut off the addition of malice member and the destruction to the block chain network, reduces the risk of patient information leakage.Secondly, Hyperledger Fabric is each to establish member service supplier's component to the client of block chain operator, One medical institutions is to distribute certain operation to the operator that block chain has operational requirements in oneself mechanism using the component Permission.The operator for only possessing specific operation permission just can inquire or add to patient information in block chain, Reduce the chance that can operate patient data, further ensure that the privacy of patient medical data.
In one embodiment, the access of the medical data and shared detailed process be as shown in the shared process of Fig. 2, Specifically includes the following steps:
Chain code in each medical institutions' block chain network in sharing channel writes chain code, utilizes chain code To inquire the shared account book information of Hyperledger Ledger block chain network be added;Block chain participant's angle is in correlation The chain code for being packed into inquiry in the client of medical institutions operator, increasing medical information has when patient goes to a doctor again The operator of permission inquires with the client or increases patient's related medical number in the shared account book of block chain network According to;
The shared account book of block chain network is the ordered record of each healthcare structure patient assessment information in block chain network That is the addition of calibration-based hearing loss evaluation, and patient per is medical can all generate the secondary diagnosis information and the key assignments of patient basis It is right, it is saved in block chain for submitting to account book;
Block chain network uses LevelDB as key value database, is inquired using key inquiry, query composition and range of key values Method inquires patient information in Hyperledger Fabric block chain account book.
Specifically, since there are an account book in each of Hyperledger Fabric block chain network medical institutions Copy, each medical institutions chain code in sharing channel or can write specific chain code, thus each Medical institutions may be by chain code to inquire the shared account book of Hyperledger Ledger block chain network be added letter Breath.Further, it for block chain participant's angle, can be looked into be packed into the client of relevant healthcare institution operator Ask, increase medical information chain code, when patient again go to a doctor when, have corresponding authority operator can with the client come Inquiry or increase Hyperledger Fabric block chain share patient's medical data in account book.Come from technical standpoint It says, the shared account book of Hyperledger Fabric block chain network is each healthcare structure patient assessment letter in block chain network Ordered record, that is, calibration-based hearing loss evaluation addition of breath.And patient per is medical can all generate a pair of secondary diagnosis information and patient The key-value pair of essential information, these information can submit to account book and be saved in block chain.Our Hyperledger Fabric block chain network uses LevelDB as key value database, and key inquiry, query composition and range of key values can be used and look into The querying methods abundant such as inquiry inquire patient information in Hyperledger Fabric block chain account book.Since patient believes Breath is JSON format and sequence turns to character string storage in the database, therefore after we inquire result, it is only necessary to this Data carry out unserializing, and visual calibration-based hearing loss evaluation data can be obtained.For medical image information, it is only necessary to pass through The index of medical image distributed data base obtained in JSON unserializing result, so that it may be quickly obtained corresponding medical image number According to data.So far, the inquiry work to patient data is just completed.
In one embodiment, the user management of the medical data platform is specially the body of medical data operator Part management;
Wherein, standard is encapsulated by X.509 digital certificate, operator in medical institutions is affiliated in block chain network Medical institutions' information, the department name in medical institutions, role's title and the self-identity information of the operator carry out Encapsulation generates the unique digital certificate based on X.509 format;
The region chain network is the block chain network based on Hyperledger Fabric frame, in Hyperledger The MSP component carried in Fabric frame using frame uses operator's certificate in each medical institutions as authoritative institution Configuration information carry out rule and permission formulate, for verify participation block chain network operator identity information.
Specifically, using operator in a medical institutions in block chain network affiliated medical institutions' information, curing Department name, role's title in treatment mechanism pass through X.509 digital certificate and seal plus self-identity information of the operator etc. Dress standard gets up to generate the digital certificate of a unique X.509 format those Information encapsulations.Obviously, only possess card Book is inadequate, because an identity must be (being equivalent to identity card in the real world) that can be verified, this Identity must be from the authoritative institution or system that this block chain network is trusted.It is sharp in Hyperledger Fabric The MSP component for using frame included is as an authoritative institution, with describing the configuration of operator's certificate in each medical institutions Information is come the series of rules (permission for determining each operator) that defines, so that participating in each operation of block chain network The identity of personnel can be verified.It is specifically exactly the certified authority trusted first by system, it is such as well-known in the industry Certification authority Symantec, GeoTrust etc. issue a root certificate for the Hyperledger Fabric network, Root certificate then corresponds to Fabric CA node in Hyperledger Fabric frame.It then is block chain by the root certificate Each medical institutions in network issue an intermediate CA certificate, and intermediate CA certificate can be each needs within the organization The personnel of operation block chain network data issue a CA.Root CA in this way and multistage intermediate CA, can form a trust chain, make The each point that must participate in block chain has the identity that can be verified --- next stage CA can be verified by the CA of upper level. And the certificate that Fabric CA is issued can also be used to sign, so that operator each time carries out block chain with client Data submit can use the participant public key verify.Further ensure the safety of calibration-based hearing loss evaluation.
In order to further illustrate the embodiment that the present invention crosses, in the present invention above-mentioned scheme and attached drawing Fig. 1 and Fig. 2 On the basis of, illustrating for a specific patient assessment is carried out, specific as follows:
One, patient any one family in region establishes goes to a doctor for the first time in the hospital of Medical data sharing block chain network When, first doctor be its typing patient related essential information.Then patient treats, at this time if patient needs to carry out phase It closes and checks;For common medical inspection, relevant information is recorded in patient clinical electronic health record;For medical image class Inspection, medical image operator utilizes specific Medical Imaging System API, the image data of corresponding patient run SHA256 Hash operation generates corresponding cryptographic Hash, then image data is stored the distributed shadow having into each medical institutions In picture database, while the corresponding index in distributed data base of the image data is led to together with the cryptographic Hash of the image data The communication server is crossed to be written in clinical electronic health record.If patient the case where there are hospitalizations, hospital medical information is utilized System is written to the clinical data of patient in its clinical electronic health record.
Two, patient's treatment end, when handling discharge, doctor passes through hospital medical information system first and patient is gone to a doctor for this time All medical informations be integrated into the JSON file of structuring.Then, client is operated the trouble by specific block chain The JSON file that person corresponds to medical information is serialized using relevant serializing function, generates character string.Simultaneously true The patient basis recognized also serializes.The character string pair of patient basis and patient assessment's information are generated at this time.It is logical The submission chain code for crossing Hyperledger Fabric block chain network be added, the secondary diagnosis information storage to block chain In.
Three, patient's further consultation or it joined the hospital admission of the Medical data sharing block chain network to family another in region When, doctor can be right in account book of the patient basis to inquire the block chain network by inputting in block chain operation client The Historical medical's information answered.After inquiring result, client generates visual the result character string unserializing checked out Calibration-based hearing loss evaluation.If checking corresponding image data, it is only necessary to pass through the distribution in medical information obtained above The index of image database, again to distributed image data library inquiry.The image data inquired can be transported simultaneously The corresponding hash function of row, generates cryptographic Hash, compares with the image data cryptographic Hash in the calibration-based hearing loss evaluation that inquires, really Image data is protected to be not tampered with.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this Made any modifications, equivalent replacements, and improvements etc., should be included in the claims in the present invention within the spirit and principle of invention Protection scope within.

Claims (7)

1. a kind of medical data platform based on block chain technology characterized by comprising terminal, server module, data are deposited Store up module and block chain network;
The terminal carries out data interaction by server module and data memory module and block chain network;
The server module includes that the communication server, intermediate certificate server and root certificate server, the communication server are used for The data interaction between modules is handled, root certificate server is used for Store Credentials information, and intermediate certificate server is for locating Block chain network nodal information is managed, and distributes certificate to block chain network node;
The data memory module includes medical information system and distributed image database, and medical information system is for storing doctor Data are treated, distributed image database stores image data into block chain network node;
The block chain network includes several mechanism accounting nodes and several common recognition nodes, and accounting nodes constitute the block Chain network, carrying out the accounting nodes in block chain network mutually, data are synchronous, and each accounting nodes are required to lead to when updating It crosses common recognition node and carries out common recognition verification operation, remaining by the content synchronization of update into block chain network is remembered again after being verified Account node.
2. the medical data platform according to claim 1 based on block chain technology, which is characterized in that the block link network The building process of network specifically includes the following steps:
S21. several medical institutions in region respectively represent each node in block chain network, pass through matching for the node Set file, the organizational information for the block chain network that change needs to create, multiple medical institutions including participating in the network in region Information, the selection information for sort algorithm of knowing together and application related information that block chain is operated;
S22. the executable program for passing through Hyperledger Fabric block chain technological frame, starts block chain network;
There are corresponding block chain node in each medical institutions in region, operate client using the block chain in each medical institutions End, is connected to the medical information system in medical institutions by communication service module, the corresponding medical data JSON sequence of patient Columnization character string as VALUE value and patient basis as KEY value, by channel in block chain network it is corresponding with mention Relevant chain code is handed over, is submitted in the current block of medical data block chain network.
3. the medical data platform according to claim 1 based on block chain technology, which is characterized in that the medical institutions Information system is used to store the medical data of the clinical treatment of each department in medical institutions, specifically includes the following steps:
S31. IHE XDS technological frame is used, to the medical information system of several medical institutions in block chain network, system Order the clinical electronic health record Integrated Solution of medical institutions;
S32. the existing medical information system API for passing through medical institutions, patient basis and the clinic electricity of medical period Sub- case history export;
S33. the medical image information of patient is stored into distributed image database;
S34. the clinical electronics of the unique index the corresponding image information of patient in distributed image database and the patient Medical record information and patient basis are integrated into the JSON file of structuring, and are stored in medical information system;
S35. the JSON file of the step S5 is serialized, generates the character of the VALUE value as database purchase String, while using patient basis's character string as KEY value, generate KEY-VALUE pairs of patient information and patient medical data And it is stored in medical information system.
4. the medical data platform according to claim 3 based on block chain technology, which is characterized in that the step S33 It is as follows with the specific storing process of S34:
Using the existing medical information system of medical institutions, by the API of Medical Imaging System, corresponding patient medical data's The export of medical image file, is stored in the distributed data base that each medical institutions member is had in block chain network;
Wherein, for the distributed data base by SequoiaDB database realizing, the medical image of each medical institutions is distributed Database data consistency is realized by the Raft distributed algorithm that SequoiaDB distributed data base system embeds;
When storing the medical image file of patient, using SHA256 hash algorithm, 256 cryptographic Hash are generated;Described in Cryptographic Hash and distributed data base store in the corresponding structuring JSON file of patient information the index of this document together.
5. the medical data platform based on block chain technology according to any one of claim 2-4, which is characterized in that institute Medical data is stated to be protected by following encrypting and decrypting process;
In block chain network, before block chain is written in patient medical data, by elliptic curve encryption algorithm to storing patient The character string of information is encrypted, and is written to using chain code in the block of medical data block chain network, is stored by encipherer Decruption key;When decryption, data deciphering reduction is carried out by the decryption code key.
6. the medical data platform according to claim 1 based on block chain technology, which is characterized in that the medical data Access and shared procedure it is specific as follows:
Chain code in each medical institutions' block chain network in sharing channel writes chain code, is looked into using chain code Ask the shared account book information of Hyperledger Ledger block chain network be added;Block chain participant's angle is in related medical The chain code for being packed into inquiry in the client of mechanism operator, increasing medical information has permission when patient goes to a doctor again Operator inquired or increased with the client block chain network share account book in patient's medical data;
The shared account book of block chain network is that the ordered record of each healthcare structure patient assessment information in block chain network is suffered from The addition of person's medical information, and patient per is medical can all generate the secondary diagnosis information and the key-value pair of patient basis, uses It is saved in block chain in submitting to account book;
Block chain network uses LevelDB as key value database, uses key inquiry, query composition and range of key values issuer Method inquires patient information in Hyperledger Fabric block chain account book.
7. the medical data platform according to claim 1 based on block chain technology, which is characterized in that the medical data The user management of platform is specially the Identity Management of medical data operator;
Wherein, standard, the affiliated medical treatment in block chain network by operator in medical institutions are encapsulated by X.509 digital certificate Organization information, the department name in medical institutions, role's title and the self-identity information of the operator are packaged, Generate the unique digital certificate based on X.509 format;
The region chain network is the block chain network based on Hyperledger Fabric frame, in Hyperledger The MSP component carried in Fabric frame using frame uses operator's certificate in each medical institutions as authoritative institution Configuration information carry out rule and permission formulate, for verify participation block chain network operator identity information.
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Application publication date: 20190118