Human Factors and Usability Engineering in Medical Devices

Explore the FDA human factor process for medical devices, covering ten chapters and four appendices on risk management, user analysis, testing, and submission documentation.

Define intended users, use environments, and the device user interface to ensure safe, usable medical devices across hospital, home, and emergency settings.

Develop use scenarios for medical devices by detailing users, settings, steps, and factors to identify critical tasks and risks, aligned with ISO 62366 and FDA guidance.

Break down medical device use through task analysis to identify user interface components, potential user errors, and harm, mapping scenarios from hospital diagnosis to remote monitoring for traceable risk analysis.

Identify use-related risks in medical devices through a risk management process, assessing severity of harm, critical tasks, and implementing design controls and usability interventions.

Design medical device user interfaces with human factors engineering and user centered design, guided by FDA guidelines and 21 CFR part 820, and conduct usability testing to reduce cognitive load.

Conduct formative usability testing to identify and resolve usability issues early, using scenarios, representative participants, think-aloud and observation, and document design changes for iterative improvement.

Conduct summative usability testing of critical tasks to ensure safety and FDA readiness, with real-world scenarios, 15–50 participants per user group, and a comprehensive evaluation plan and report.

Document human factor activities for FDA submission using a risk-based category framework (category one to three) and include task analyses, hazard analyses, and formative and summative evaluations.