Patient Recruitment Server with Pseudonymization

A central patient recruitment server acts as an intermediary between healthcare institutions and recruitment requests. The server receives recruitment criteria, coordinates searches across multiple institutions' patient data processing units, aggregates results, and manages notification distribution. This intermediary architecture enables efficient multi-institutional recruitment without requiring direct complex connections between all participating institutions, thus improving productivity while managing system complexity.

The system segments patient data processing by maintaining local patient data processing units at each healthcare institution that store and process patient records locally. The central recruitment server does not directly access raw patient data but instead receives processed recruitment results from these distributed units. This segmentation allows accurate patient identification through coordinated searching while minimizing data protection risks by keeping sensitive patient data localized and reducing centralized data exposure.

The system implements automated self-service functionality where the patient recruitment server automatically receives recruitment criteria, executes searches across connected healthcare institutions, aggregates patient matches, and dispatches notifications to identified patients. This automation eliminates the need for manual staff involvement in coordinating recruitment across institutions, significantly reducing recruitment time and staff input while maintaining data protection through automated controlled processes and audit trails.