Blockchain Health Record Access Control via Smart Contracts
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Solution Overview
Problem
Current healthcare record systems face challenges in providing secure, accessible, and interoperable electronic access to protected health information (PHI), with patients having limited control over their records and systems being burdened by compliance and liability issues, leading to restricted access and inefficient data management.
Innovation Solution
The implementation of a healthcare blockchain system that uses smart contracts and certified self-sovereign identities (CSI) to enable granular control over access permissions, allowing patients to designate authorized users and conditions for access to their electronic health records (EHRs), with a standardized API for secure and standardized access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If healthcare systems implement centralized control mechanisms for EHR management to ensure compliance with PHI regulations, then regulatory compliance and security are improved, but patient control and accessibility to their own health information deteriorate
Solution Approach 1:
The patent introduces a blockchain-based intermediary system that mediates between centralized compliance requirements and decentralized patient control needs. The blockchain ledger acts as a neutral intermediary that records and verifies access permissions and transactions, allowing patients to control their own EHR access while maintaining audit trails for regulatory compliance. This resolves the contradiction by enabling both patient autonomy and regulatory oversight through the intermediary blockchain infrastructure.
Solution Approach 2:
The patent segments the EHR management system into multiple independent components: patient-controlled access permissions, provider access requests, blockchain verification layers, and compliance audit trails. This segmentation allows different stakeholders to control specific aspects of their data while maintaining overall system compliance. Patients can grant selective access to specific providers for specific time periods without relinquishing overall control, while the system maintains comprehensive audit capability for regulatory purposes.
2Reliability
If healthcare systems restrict access to EHR data to minimize liability and maintain security, then security and liability protection are improved, but data interoperability and accessibility deteriorate
Solution Approach 1:
The patent implements dynamic access control where permissions are not fixed but can be adjusted in real-time based on patient preferences, provider credentials, and specific care needs. Access permissions can be granted temporarily, revoked, or modified without compromising overall system security. This dynamic approach enables flexible interoperability while maintaining security boundaries, allowing data to flow to authorized providers when needed while preventing unauthorized access.
Solution Approach 2:
The system changes the parameters of data access by implementing granular control over what specific data elements can be accessed, by whom, and under what conditions. Instead of binary access control (access or no access), the system allows multiple parameter variations including time-based access, provider-type-based access, and data-element-based access. This enables broad interoperability across different healthcare providers while maintaining security through parameterized access rules.
3Reliability
If healthcare providers manage and disburse their own EHR data to maintain control and compliance, then control and compliance are improved, but operational burden and distraction from core competencies worsen
Solution Approach 1:
The patent enables self-service capabilities where patients can independently manage their own EHR access permissions, view their data, and control who accesses their information without requiring provider intervention. The automated blockchain verification system also performs compliance checks automatically, eliminating the need for manual compliance management by providers. This shifts the operational burden from providers to an automated system, allowing providers to focus on patient care while the system handles compliance and data management tasks.
4Reliability
If legacy EHR systems use proprietary mechanisms for controlling health information resources, then system security and data integrity are improved, but accessibility to new applications and interoperability deteriorate
Solution Approach 1:
The patent implements a universal blockchain-based access control layer that works across multiple EHR systems, applications, and providers. The standardized permissioning and verification mechanisms can be accessed by any application that implements the blockchain interface, eliminating proprietary lock-in. This universal layer maintains data integrity through cryptographic verification while enabling broad application accessibility and interoperability across different healthcare systems and platforms.
Data Source
AI summary
Technologies are disclosed herein to secure flexible access to the healthcare information resources (HIR) contained within electronic health records (EHR) systems. By managing access permissions with certified self-sovereign identities and distributed ledger techniques, HIR may be secured. Patients and other users may be registered to access a distributed ledger, such as a healthcare blockchain, employed to set, host and adjudicate permissions to access HIR. Authorized owners and/or patients with rights to their own HIR may be able to grant fine-grained and conditional access permissions to third-parties. Information transfers and transactions occurring according to these permissions may be logged within smart contracts incorporated in the healthcare blockchain.