Medical Record Sharing

For information on various open source initiatives, please refer to "Open Source Products" page.

  • Overview

    Medical record sharing system is a system in which information that was until now spread across various medical institutions, such as hospital medical records and pharmaceutical prescription data, is shared by medical institutions and with authority (viewing and recording) controlled by the patient (user).

    As this system develops into real network service based on the open source that we are now offering, and as medical institutions utilizing this system expand nationwide, we anticipate that network effects will accrue greatly increasing ease of access to information. For example, imagine a hospital where a user is visiting for the first time due to a sudden emergency while traveling. If the user gives access authority, the doctor can securely, accurately and quickly obtain the user's medical history, allergies, prescriptions, etc. through devices located at the hospital. In this way the system will be useful if put into practice.

  • Release

  • Overall structure

    The overall structure is as follows.

    Overall image of Medical Record Sharing

  • Usage Flow

    • Patient (User) - Service Flow

      1. Access start screen through mobile device of the user and automatically generate unique key within this device.
      2. Read QR code at a medical institution that introduced this system, and acquire the medical institution's address.
      3. Grant access authority to the medical institution and record it on the blockchain.

        Medical Institution Medical Record Sharing System Patient Flow

    • Medical Institution – The System’s Implementation Flow

      1. Access start screen through device located at medical institution. (automatically generate medical institution specific master key)
      2. Register Medical Institution Master Key. (recorded on the blockchain)
      3. Generate keys specific to each device used by medical practitioner.
      4. Record devices used by medical practitioner on the blockchain after approval by master key.

        Medical institution chart medical sharing system medical institution flow

  • Advantages of a Blockchain Based Solution

    Properly controlling or permitting access to a secure information traditionally required entrusting rule enforcement and verification to an impartial third-party that guaranteed its authenticity. Rule enforcement and verification by third-party involved labor intensive manual validation based on confidence in an individual and an organization. In general this process not only required human resources but also incurred a monetary cost for constructing and managing the process.

    However, with the blockchain, defining rules in terms of code (smart contracts) will automate processes that are based on the rules, so procedures can be executed automatically without third-party intervention. This mechanism of validation is an intrinsic feature of the blockchain.

    Shifting the roles traditionally assumed by third-party institutions to the blockchain and constructing mechanisms that keep working mechanically and permanently with programs will make it possible to achieve a large reduction in personal and monetary costs.

  • Common Issues with blockchains that this service resolves

    1. Restricted information disclosure (access control)

      In the blockchain, recorded information is open so as to guarantee that no inappropriate falsification of data written therein takes place but this inevitably discloses personal information and confidential information.

      In Z.com Cloud Blockchain, establishing a data store (data storage area) to store confidential information and separating it from the blockchain will enable controlling access to the inside of data store, so information disclosure can be restricted. This enables us to realize an environment where only medical institutions with authority provided by patients (users) and the devices holding keys can view and record confidential information, such as an electronic medical record and patient (user) prescription data.

    2. Bear the patient’s (user’s) costs

      In the blockchain, all historical data of the user’s actions - e.g. Mr. A provided Hospital B with authority, Dr. C created an electronic medical record of Ms. D - are recorded, and at the time of recording these historical data, the user who recorded them (took actions) needs to pay the cost in cryptocurrency. However, it is still uncommon for general patients (users) and medical practitioners to possess cryptocurrency in devices they use, so they may avoid using the above service.

      In Z.com Cloud Blockchain, since service provider bears the cost of recording to the blockchain, patients (users) can take advantage of the system without being required to pay in cryptocurrency every time.

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