Standardization of problem lists in the healthcare industry is needed to enable more efficient exchange of information between health providers and especially to patients. Paper-based structures do not work in electronic environments and some forms of problem list preparation, such as auto-population of lists, represent significant compliance and patient safety concerns.
Electronic Health Records (EHRs) are entirely controlled by hospitals instead of patients, which complicates seeking medical advices from different hospitals. Patients face a critical need to focus on the details of their own healthcare and restore management of their own medical data. The rapid development of blockchain technology promotes population healthcare, including medical records as well as patient-related data. This technology provides patients with comprehensive, immutable records, and access to EHRs free from service providers and treatment websites. In this paper, to guarantee the validity of EHRs encapsulated in blockchain, we present an attribute-based signature scheme with multiple authorities, in which a patient endorses a message according to the attribute while disclosing no information other than the evidence that he has attested to it. Furthermore, there are multiple authorities without a trusted single or central one to generate and distribute public/private keys of the patient, which avoids the escrow problem and conforms to the mode of distributed data storage in the blockchain.
Providing accurate, up-to-date, and complete information about patients at the point of care Enabling quick access to patient records for more coordinated, efficient care Securely sharing electronic information with patients and other clinicians Helping providers more effectively diagnose patients, reduce medical errors, and provide safer care Improving patient and provider interaction and communication, as well as health care convenience Enabling safer, more reliable prescribing
The main objective of this system is at preserving patient privacy in a EHRs system on block chain; multiple authorities are introduced into ABS and put forward a MA-ABS scheme, which meets the requirement of the structure of block chain, as well as guaranteeing the anonymity and immutability of the information.
India's Sustainable Development
Blockchain is considered as a new technological revolution that was introduced. It is a peer-to-peer distributed ledger technology to record transactions, agreements, and sales. The benefits of the blockchain technology are decentralized maintenance, data saving in the block-then-chain structure, secure transporting and accessing of data as well as anti-tamper and undeniable data security. Taking advantage of these distinguishing features above in an EHRs system, blockchain enables the management of authentication, condentiality, accountability and data sharing while handing information related to privacy, medical resource saving and facilitating for the patient, and making population healthcare smarter. Assuming that there is an EHRs system in a cloud storage platform, which consists of some departments, such as hospitals, pharmaceutical departments, insurance departments, disease research departments and so on, EHRs systems can be jointly managed. All departments can offer services for patients together and restrict the rights of each department to prevent EHRs abuse. Thus, an EHRs system with a blockchain structure is designed. Suppose that every patient owns one blockchain of healthcare alone. After being treated in a hospital, all the information including EHRs, consumption records, insurance records, etc. is encapsulated in one block. Patient treatments at different times will be generated in different blocks. Then, a series of blocks are generated according to the time sequence and a healthcare blockchain of this patient is constructed. Authorized entity might look over the health records of this patient by means of his blockchain, and has powerless to tamper the data in established block (such as drug allergy and dosage). When the patient goes to be treated in other clinical departments or hospitals next time, the new entity needs to identify this patient and authenticate his available blockchain, which could save the medical resources and avoid the repeated detection.
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