TW201828242A - Electronic medical record system based on blockchain and method thereof - Google Patents

Abstract

An electronic medical record system based on blockchain and method thereof is disclosed. By achieving an electronic medical record through a smart contract on blockchain so that a patient node in a blockchain network can read all medical record data from the blockchain, and then transmitting the medical record data to a physician node in the blockchain network for displaying, and generating a medical record according to the medical results by the physician node, and transmitting the medical record to the blockchain network by blockchain transactions, and receiving a medical record smart contract address from blockchain transactions to transmit to the patient node for confirming the medical record, and allowing adding the medical record into the medical record data after the patient node to confirm the medical record. The mechanism is help to improve the availability of the electronic medical record.

Description

Blockchain-based electronic medical record system and method thereof

The present invention relates to an electronic medical record system and method thereof, and more particularly to a blockchain-based electronic medical record system and method thereof.

In recent years, with the promotion and vigorous development of electronic medical records, most medical institutions have electronically printed their medical records. However, most of them use their own customized format to electronically record their medical records, resulting in the generation of electronic medical records that cannot be applied to different Medical institution.

In view of this, there is an international standard organization to promote the international standard format. In addition, there are also government agencies to implement a nationally defined standard format to avoid the incompatibility of electronic medical records established by different medical institutions. However, even if all medical institutions use the standard format, the patient's electronic medical records are still scattered in different medical institutions. For example, patients going to the dermatology clinic will produce an electronic medical record in this dermatology department. In the clinic, when the same patient goes to another hospital, another electronic medical record is also stored in the hospital. In other words, when a patient seeks a doctor, the doctor cannot obtain a complete historical medical record of the patient and thus lacks sufficient information to make the best diagnosis. In addition, since patients cannot have their own electronic medical records, they cannot use their own intelligent medical devices or medical aids that require electronic medical records at their homes, so they have a problem of poor usability of electronic medical records.

In summary, it can be seen that the prior art has long been a problem of poor usability of electronic medical records, so it is necessary to propose improved technical means to solve this problem.

The invention discloses a blockchain-based electronic medical record system and a method thereof.

Firstly, the present invention discloses a blockchain-based electronic medical record system, which is applied to a plurality of nodes constituting a blockchain network, each of which has a blockchain and processes the blockchain transaction capability, and the system includes: Suffering node and physician node. The patient node is one of the nodes, and includes: an execution module and a confirmation module. The execution module is configured to execute a medical record smart contract of the blockchain to read the corresponding medical record data according to the medical record information smart contract address stored in the medical record data address array, and decrypt the according to the preset patient private key The medical record data is transmitted for receiving; the confirmation module is configured to receive the medical record smart contract address to confirm the medical record, and after confirming the correctness, store the medical record smart contract address through the blockchain transaction to the medical record data address array as One of the medical record information smart contract addresses.

The physician node is also one of the nodes, and includes: a medical module, an encryption module, and a transaction module. The medical module is configured to receive the decrypted medical record data from the patient node for display, and generate a medical record after the medical treatment; the encryption module is configured to encrypt the medical record according to the preset patient public key to generate an encrypted record. And encrypting the encrypted record according to the preset medical certificate; the transaction module is used to transmit the encrypted record after the signature to the blockchain network by the blockchain transaction, and receive the blockchain network to complete the blockchain The medical record smart contract address generated after the transaction and the medical record smart contract address is transmitted to the patient node.

In addition, the present invention discloses an electronic medical record method based on a blockchain, which is applied to a plurality of nodes constituting a blockchain network, each of which has a blockchain and processes the blockchain transaction capability, and the steps include: providing a patient node and a physician node, wherein the patient node and the physician node are respectively one of the nodes; the patient node performs a medical chain smart contract of the blockchain to select a smart contract address based on the medical record data stored in the medical record data address array Reading the corresponding medical record data, and decrypting the medical record data according to the preset patient private key for transmission to the physician node; the physician node receives the decrypted medical record data from the patient node for display, and generates a medical record after the medical treatment The physician node encrypts the medical record according to the preset patient public key to generate an encrypted record, and signs the encrypted record according to the preset medical certificate; the physician node transmits the encrypted record after the signature to the blockchain transaction to Blockchain network, and the medical record smart contract address generated after receiving the blockchain network to complete the blockchain transaction, and will The medical record smart contract address is transmitted to the patient node; the patient node receives the medical record smart contract address to confirm the medical record, and after confirming the correctness, stores the medical record smart contract address through the blockchain transaction to the medical record data address array, As one of the medical contract information smart contract addresses.

The system and method disclosed by the present invention are as above, and the difference from the prior art is that the present invention implements an electronic medical record through a smart contract of a blockchain, enabling a patient node in a blockchain network to read medical records from the blockchain. Data, and then transmit the medical record data to the physician node in the blockchain network for display for medical diagnosis, then generate medical records by the physician node after medical treatment, and transmit the medical records through blockchain transactions. The blockchain network and the medical record smart contract address generated after receiving the blockchain transaction are transmitted to the patient node to provide a confirmed medical record. When the patient node confirms, the medical record is allowed to be added to the medical record data.

Through the above technical means, the present invention can achieve the technical effect of improving the usability of the electronic medical record.

The embodiments of the present invention will be described in detail below with reference to the drawings and embodiments, so that the application of the technical means to solve the technical problems and achieve the technical effects can be fully understood and implemented.

Before describing the blockchain-based electronic medical record system and method thereof disclosed in the present invention, the environment to which the present invention is applied will be described. The present invention is applied to a plurality of nodes constituting a blockchain network, each node. Each has a blockchain and is used to process blockchain transactions. In actual implementation, these nodes are computer devices with network connection capabilities and connected by peer-to-peer (Peer to Peer), for example: A server, a host computer, a notebook computer, a tablet computer, etc., for executing computer program instructions, such as the blockchain program "Ethereum". Specifically, the patient node and the physician node of the present invention are each one of the nodes, wherein the patient node is a node at a location of the patient; and the physician node is a node at a location where the physician is located.

In addition, the medical contract information smart contract address and the medical record smart contract address of the present invention are the addresses of the smart contract in the blockchain, and the difference between the two is that the smart contract corresponding to the former (ie, the medical record smart contract) has become Part of the patient's electronic medical record; the latter's smart contract is required to be confirmed by the patient before being allowed to join the patient's electronic medical record. The smart contract refers to a computer program that drives an execution instruction according to a predetermined condition and transmitted information. In actual implementation, the smart contract is through a programming language such as Solidity, Serpent, LLL, EtherScript, Sidechain, etc. Writing, which can include various functions, parameter states, etc., using the blockchain program "Ethereum" as an example, the smart contract is compiled to obtain binary encoding and application Binary Interface (ABI). In order to broadcast the smart contract to the blockchain network, wait for Miner to put the smart contract on the blockchain and get the corresponding address. After that, the corresponding smart contract can be executed according to this address, and the state of the smart contract in the blockchain can be changed by different instructions.

The blockchain-based electronic medical record system and method thereof are further described below with reference to the drawings. Please refer to "FIG. 1" first, and "FIG. 1" is a system block diagram of the blockchain-based electronic medical record system of the present invention. Applying to a plurality of nodes 100 constituting the blockchain network 10, each node 100 has a blockchain and handles blockchain transaction capabilities. The system includes a patient node 110 and a physician node 120. The portion of the patient node 110 includes an execution module 111 and a confirmation module 112. The execution module 111 is configured to execute the medical record intelligent contract of the blockchain to read the corresponding medical record data according to the medical record information (Address) stored in the medical record data address array (Array), and according to the preset The patient private key decrypts the medical record data for transmission. In actual implementation, the patient node 110 has a set of key pairs, namely the patient public key and the patient private key, and transmits the patient public key to the physician node 120 or directly posted on On the blockchain, the physician node 120 encrypts the data to ensure that the encrypted data can only be decrypted by the patient node 110 having the patient's private key. In addition, in actual implementation, the transmitted medical record data may also be signed by the patient private key for the physician node 120 to confirm that the received medical record data is indeed transmitted by the patient node 110.

The confirmation module 112 is configured to receive the medical record smart contract address from the physician node 120 to confirm the medical record, and after the patient confirms the error, store the medical record smart contract address through the blockchain transaction to the medical record data address array as One of the medical record information smart contract addresses. In actual implementation, if the patient confirms that the medical record is incorrect, the smart contract address of the medical record can be ignored. In other words, it is not allowed to store the medical record smart contract address corresponding to the medical record in the medical record data address array. As a result, the medical record will not become the medical record data in the electronic medical record, because only the medical record data address is stored. The address in the array (ie, the medical record smart contract address), the corresponding data will become the medical record data in the electronic medical record.

The portion of the physician node 120 includes a medical module 121, an encryption module 122, and a transaction module 123. The medical module 121 is configured to receive the decrypted medical record data from the patient node 110 for display, and generate a medical record after the medical treatment. The medical record may include a record after treatment, treatment, or examination. In addition, as mentioned above, the medical record data transmitted by the patient node 110 can also be signed by the patient's private key. Therefore, the physician node 120 can decrypt the patient's public key to confirm that the medical record data received is confirmed. It is transmitted by the patient node 110.

The encryption module 122 is configured to encrypt the medical record according to the preset patient public key to generate an encrypted record, and sign the encrypted record according to the preset medical certificate. In practical implementation, the medical certificate may be issued by a third-party public certificate unit (for example, a Taiwan Network Authentication Center), and a public key inquiry service is provided, so the patient node 110 can verify the signature to ensure that the encrypted record is correspondingly Generated by the physician node 120. In other words, the physician voucher can include the physician voucher private key and the physician voucher public key, the physician node 120 signs the signature according to the physician voucher private key, and provides the physician voucher public key to the patient node 110 to enable the patient node 110 to be based on the physician The voucher public key is used to verify the signature. In actual implementation, the physician voucher public key can also be published on the blockchain to provide the patient node 110 for enquiry.

The transaction module 123 is configured to transmit the encrypted record after the signature to the blockchain network 10 in the blockchain transaction, and receive the medical record smart contract address generated after the blockchain network 10 completes the blockchain transaction, and The medical record smart contract address is transmitted to the patient node 110. In actual implementation, the encrypted record is transmitted to the blockchain network 10 by blockchain transaction. A smart contract (ie, medical record smart contract) is generated on the blockchain, and the corresponding medical record smart contract address is obtained. When the patient node 110 stores the medical record smart contract address in the medical record data address array, the content representing the smart record receiving the medical record becomes part of the medical record data. At this point, the medical record smart contract address becomes the medical record information smart contract address.

Next, please refer to "Fig. 2", "Fig. 2" is a flowchart of a method for the electronic medical record method based on the blockchain of the present invention, applied to a plurality of nodes 100 constituting the blockchain network 10, each node 100 Each has a blockchain and handles the ability of the blockchain to be traded, the steps comprising: providing a patient node 110 and a physician node 120, the patient node 110 and the physician node 120 respectively forming a plurality of blockchain networks 10 One of the nodes 100 (step 210); the patient node 110 executes the medical chain smart contract of the blockchain to read the corresponding medical record data according to the medical record information smart contract address stored in the medical record data address array, and according to the preset disease The private key decrypts the medical record data for transmission to the physician node 120 (step 220); the physician node 120 receives the decrypted medical record data from the patient node 110 for display, and generates a medical record after the medical treatment (step 230) The physician node 120 encrypts the medical record according to the preset patient public key to generate an encrypted record, and signs the encrypted record according to the preset physician certificate (step 240); the physician Point 120 transmits the encrypted record after the signature to the blockchain network in blockchain transaction, and receives the medical record smart contract address generated after the blockchain network completes the blockchain transaction, and sets the medical record smart contract address. Transfer to the patient node 110 (step 250); the patient node 110 receives the medical record smart contract address to confirm the medical record, and after confirming the correctness, stores the medical record smart contract address through the blockchain transaction to the medical record data address array, As one of the smart record addresses of the medical record data (step 260). Through the above steps, the electronic medical record can be realized through the intelligent contract of the blockchain, so that the patient node 110 in the blockchain network 10 can read the medical record data from the blockchain, and then transmit the medical record data to the blockchain. The physician node 120 in the network 10 performs display for medical diagnosis, then generates a medical record by the physician node 120 after medical treatment, and transmits the medical record to the blockchain network 10 via blockchain transactions. And receiving the medical record smart contract address generated after the blockchain transaction is transmitted to the patient node 110 to provide a confirmed medical record, and when the patient node 110 confirms, the medical record is allowed to be added to the medical record data. In this way, patients can maintain their own electronic medical records through the blockchain, and the medical records in the electronic medical records can be applied to medical equipment or medical auxiliary software through the characteristics of blockchain data interconnection.

The following is a description of the following examples in conjunction with "3" to "5". Please refer to "3" and "3" for the purpose of reading the medical records at the patient node using the present invention. . It is assumed that the patient at the patient node 110 wants to read the medical record data of the blockchain and transmit the read medical record data to the physician node 120, which can enter the disease in the medical record address input box 310 through the patient operation window 300. Suffering from the address of the medical record smart contract that he owns in the blockchain (ie: medical record information smart contract address), for example: "0xcee285f6eb0a3cf918891117272a7bec686cf996", after clicking the load component 311, by inputting the address from the block The medical record data is read in the chain and displayed in the medical record data display block 320. In actual implementation, the medical record data read from the blockchain is encrypted by the patient's public key, and therefore, before being displayed in the medical record data display block 320, the medical record key corresponding to the patient is first displayed. The patient's private key is decrypted to successfully display the decrypted medical record data in the medical record display block 320. In this way, you can ensure that other people can't read medical records only by medical record smart contract address, and they must have the corresponding patient private key to decrypt correctly.

Next, the decrypted medical record data is transmitted to the physician node 120. The patient can input the Uniform Resource Identifier (URI) of the physician node 120 through the physician node address input box 330 as shown in FIG. 3, for example: "enode://82498ed4295f1ce8fd6273f18b201c68c7ae9a76b47d35a7d740d2264d78bd120052fda79ae03a35c17875a55c8e35395146c118fa90b5e25c7bf91d6a5980e4@192.168.1.1:30303 And, the transport element 331 is clicked by cursor or touch to transmit. Among them, "82498ed4295f1ce8fd6273f18b201c68c7ae9a76b47d35a7d740d2264d78bd120052fda79ae03a35c17875a55c8e35395146c118fa90b5e25c7bf91d6a5980e4" is the public key of the physician node 120, "192.168.1.1" is the network address of the physician node 120, and "30303" is the communication nickname.

As shown in "Fig. 4", "Fig. 4" is a schematic diagram of the application of the present invention to the medical record at the physician node. As mentioned above, the decrypted medical record data is transmitted to the physician node 120. In actual implementation, the physician node 120 displays the received medical record data in the medical record display block 410 in the physician operation window 400, and the medical record located at the physician node 120 can be used as a reference for medical diagnosis through the displayed medical record data, and After the medical treatment, the relevant record is entered in the medical record block 420 (i.e., the physician records the document recorded by the medical service) to generate a medical record. If the record is to be re-recorded due to mistakes, the editing component 431 can be clicked for editing. Then, after the medical record is generated, the signature component 432 can be clicked to first encrypt the medical record according to the preset patient public key to generate an encrypted record, and then the encrypted record is signed with the preset physician certificate. For confirmation of this encrypted record is generated by this physician node 120. Finally, the transmission component 433 can be clicked to transmit the signed encrypted record to the blockchain network 10 in a blockchain transaction, and the blockchain network 10 performs blockchain transaction processing and receives the block. The chain network 10 completes the medical record smart contract address generated after the blockchain transaction to transmit the medical record smart contract address to the patient node 110 to provide the patient with the corresponding medical record. In actual implementation, when the physician node 120 receives the medical record smart contract address, a display window 450 as shown in FIG. 4 can be generated to display the medical record smart contract address so that the physician can pass the medical record. The smart contract address queries and confirms the medical records generated by the blockchain.

As shown in "figure 5", "figure 5" is a schematic diagram for confirming medical records at the patient node using the present invention. In the above example, after receiving the medical record smart contract address transmitted by the physician node 120, the patient node 110 may generate a confirmation window 500 as shown in "figure 5" for displaying the medical record smart contract address 510 and displaying The corresponding medical record of the medical record smart contract address 510 is displayed in block 520. Assuming that the patient confirms that the medical record is correct, the confirmation component 531 can be clicked to store the medical record smart contract address 510 in the medical record smart address address array of the medical record smart contract through the blockchain transaction as one of the medical record data stored in the array. Smart contract address. In this way, when the medical record smart contract is executed, the medical record data corresponding to the medical record smart contract address 510 can be read from the medical record data address array. Conversely, if the patient confirms that the medical record is incorrect, click on the objection component 532 to ignore the medical record smart contract address 510. As a result, the medical record smart contract address 510 will not be added to the medical record address array, resulting in The corresponding medical record cannot be written into the patient's electronic medical record. That is to say, the medical record corresponding to the medical record smart contract address 510 is equivalent to a piece of information that no one will read.

In summary, it can be seen that the difference between the present invention and the prior art is that the electronic medical record is realized through the intelligent contract of the blockchain, so that the patient node in the blockchain network can read the medical record data from the blockchain, and then The medical record data is transmitted to the physician node in the blockchain network for display for medical diagnosis, then the medical record is generated by the physician node after the medical treatment, and the medical record is transmitted to the block through the blockchain transaction. The chain network and the medical record smart contract address generated after receiving the blockchain transaction are transmitted to the patient node to provide a confirmed medical record. When the patient node confirms, the medical record is allowed to be added to the medical record data, thereby using a technical means The problem of the prior art can be solved, thereby achieving the technical effect of improving the usability of the electronic medical record.

While the present invention has been described above in the foregoing embodiments, it is not intended to limit the invention, and the invention may be modified and modified without departing from the spirit and scope of the invention. The scope of patent protection shall be subject to the definition of the scope of the patent application attached to this specification.

10‧‧‧ Blockchain network

100‧‧‧ nodes

110‧‧‧patient node

111‧‧‧Execution module

112‧‧‧Confirmation module

120‧‧‧Physician node

121‧‧‧ medical module

122‧‧‧Encryption Module

123‧‧‧Transaction module

300‧‧‧patient operation window

310‧‧‧ medical record address input box

311‧‧‧Loading components

320‧‧‧ medical record data display block

330‧‧‧Physician node address input box

331‧‧‧Transmission components

400‧‧‧Physician operating window

410‧‧‧ medical record data display block

420‧‧ medical record block

431‧‧‧editing components

432‧‧‧Signature components

433‧‧‧Transmission components

450‧‧‧Display window

500‧‧‧Confirmation window

510‧‧ medical record smart contract address

520‧‧‧Display block

531‧‧‧Confirmation component

532‧‧‧Dissident components

Step 210 ‧ ‧ provides a patient node and a physician node, the patient node and the physician node are respectively one of a plurality of nodes constituting a blockchain network

Step 220‧‧ The patient node performs a medical record smart contract of the blockchain to read the corresponding at least one medical record data according to at least one medical record intelligent contract address stored in an array of medical record data addresses, and according to a preset A patient private key decrypts the medical record data for transmission to the physician node

Step 230‧‧ The physician node receives the decrypted medical record data from the patient node for display, and generates a medical record after the medical treatment

Step 240‧‧ The physician node encrypts the medical record according to a preset patient public key to generate an encrypted record, and signs the encrypted record according to a preset medical certificate

Step 250‧‧‧ The physician node transmits the encrypted record after the signature to the blockchain network in a blockchain transaction, and receives a medical record intelligence generated after the blockchain network completes the blockchain transaction Contract address and transfer the medical record smart contract address to the patient node

Step 260‧‧ The patient node receives the medical record smart contract address to confirm the medical record, and after confirming the correctness, stores the medical record smart contract address through the blockchain transaction to the medical record data address array as One of the medical record information smart contract addresses

1 is a block diagram of a system based on a blockchain-based electronic medical record system of the present invention. 2 is a flow chart of a method for an electronic medical record method based on a blockchain according to the present invention. Figure 3 is a schematic diagram of reading medical records at a patient node using the present invention. Figure 4 is a schematic diagram of the application of the present invention to the generation of medical records at a physician node. Figure 5 is a schematic diagram of the application of the present invention to confirm medical records at a patient node.

Claims (10)

A blockchain-based electronic medical record system is applied to a plurality of nodes forming a blockchain network, each node having a blockchain and processing blockchain transaction capability, the system comprising: a patient node The patient node is one of the nodes, and includes: an execution module, configured to execute a medical record smart contract of the blockchain to be based on at least one medical record intelligent contract stored in an array of medical record data addresses The address reads the corresponding at least one medical record data, and decrypts the medical record data according to a preset patient private key for transmission; and a confirmation module for receiving a medical record smart contract address to confirm a medical record And after confirming the error, storing the medical record smart contract address through the blockchain transaction to the medical record data address array as one of the medical record information smart contract addresses; and a physician node, the physician node is One of the nodes, comprising: a medical module for receiving the decrypted medical record data from the patient node for display, and Generating the medical record after the medical treatment; an encryption module for encrypting the medical record according to a preset patient public key to generate an encrypted record, and signing the encrypted record according to a preset medical certificate And a transaction module for transmitting the encrypted record after the signature to the blockchain network in a blockchain transaction, and receiving the medical record generated after the blockchain network completes the blockchain transaction The smart contract address and the medical record smart contract address is transmitted to the patient node. A blockchain-based electronic medical record system according to claim 1, wherein the patient node has a set of key pairs, the set of key pairs including the patient public key and the patient private key, and The patient public key is transmitted to the physician node in advance. The blockchain-based electronic medical record system according to claim 1, wherein the execution module encrypts the medical record data according to the patient private key before transmitting the medical record data, to complete the The signature of the medical record information. The blockchain-based electronic medical record system according to claim 1, wherein the physician voucher includes a physician voucher private key and a physician voucher public key, and the encryption module performs signature according to the physician voucher private key and provides The physician credentials the public key so that the patient node verifies the signature based on the physician voucher public key. The blockchain-based electronic medical record system according to claim 1, wherein the patient private key, the patient public key, and the physician certificate are generated and issued by a third party public credit certificate unit, and the disease is A physician voucher public key with the public key and the physician voucher is written to the blockchain for inquiry. A blockchain-based electronic medical record method is applied to a plurality of nodes constituting a blockchain network, each node having a blockchain and processing blockchain transaction capability, and the steps thereof include: providing a patient a node and a physician node, wherein the patient node and the physician node are respectively one of the nodes; the patient node executes a medical record smart contract of the blockchain to be stored according to at least one of an array of medical record data addresses The medical record information smart contract address reads the corresponding at least one medical record data, and decrypts the medical record data according to a preset patient private key for transmission to the physician node; the physician node receives the decrypted from the patient node The medical record data is displayed for display, and a medical record is generated after the medical treatment; the medical node encrypts the medical record according to a preset patient public key to generate an encrypted record, and the encrypted record is according to a preset medical certificate Signing the signature; the physician node transmits the encrypted record after the signature to the blockchain network in blockchain transaction, and receives the blockchain network Forming a medical record smart contract address generated after the blockchain transaction, and transmitting the medical record smart contract address to the patient node; and the patient node receives the medical record smart contract address to confirm the medical record, and After the confirmation is correct, the medical record smart contract address is stored into the medical record data address array through the blockchain transaction as one of the medical record information smart contract addresses. A blockchain-based electronic medical record method according to claim 6 wherein the patient node has a set of key pairs, the set of key pairs including the patient public key and the patient private key, and The patient public key is transmitted to the physician node in advance. The blockchain-based electronic medical record method according to claim 6, wherein the patient node encrypts the medical record data according to the patient private key before transmitting the medical record data to complete the The signature of the medical record information. The blockchain-based electronic medical record method according to claim 6, wherein the physician voucher includes a physician voucher private key and a physician voucher public key, the physician node performs signature according to the physician voucher private key, and provides the The physician credentials the public key so that the patient node verifies the signature based on the physician voucher public key. The blockchain-based electronic medical record method according to claim 6 of the patent application scope, wherein the patient private key, the patient public key, and the physician certificate are generated and issued by a third party public credit certificate unit, and the disease is caused A physician voucher public key with the public key and the physician voucher is written to the blockchain for inquiry.