Medical Devices

Medical device companies are increasingly adopting STAMP-based approaches for connected medical systems.

What Is STPA?

System-Theoretic Process Analysis (STPA) is a hazard analysis method developed at MIT that provides a more efficient way to think about safety in complex, software-intensive, and interconnected systems. STPA is based on systems theory, not reliability theory. It views safety as a control problem and goes beyond failures to consider unsafe interactions and design flaws.

Accidents often arise from unsafe interactions among components, which is possible with or without individual failures. These interactions might involve human operators, software, hardware, or even environmental factors. STPA is a step-by-step process to uncover the interactions that matter most—like situations where feedback, decisions, or control actions can inadvertently lead to hazards. The process results in a set of loss scenarios that reveal the system’s weaknesses, along with a collection of requirements and solutions designed to prevent or address these situations.

STPA can identify hazards caused by:

Why It Matters for Medical Devices

Examples of Areas Targeted by STPA

Human Factors

Identifies potential for user errors, specific device behaviors that can cause or prevent user errors, solutions to prevent harm despite user errors, and ways to design interfaces or workflows that minimize confusion and improve safety.

Software & Control Logic

Reveals unsafe control actions in embedded or closed-loop control systems where timing, environmental factors, available feedback, and the way decisions are made matter.

Connected & Interoperable Devices

Identifies risks arising from inadequate coordination and misinterpretations among networked devices or hospital systems.

Operational & Postmarket Contexts

Extends beyond design to evaluate how the user context, clinical environment, maintenance, configuration changes, and updates can introduce new risks.

Why Adoption Is Growing

Regulators and manufacturers are recognizing that system-level safety requires more than failure analysis. The U.S. FDA, medical device companies, hospital systems, and other industry leaders are increasingly applying STPA to:

STPA’s uptake in the medical sector reflects a broader shift in engineering: safety now requires attention to system-level dynamics, such as user confusion, coordination between devices, and operational contexts. It’s more efficient and more effective than a brute-force enumeration of individual equipment malfunctions or failures.

The Bottom Line

STPA provides a structured, engineering-driven way to uncover hazards early, define explicit safety constraints, and design more resilient medical devices that take into account the full operational context.

By moving beyond failure-based thinking, STPA equips teams to address the real challenges of modern healthcare technology—safely, systematically, and with a deeper understanding of how their devices fit into the larger clinical ecosystem.

Trusted By

Partnering with Medical Device leaders to set the gold standard for system safety and device reliability. Some of our recent collaborations include:

Siemens

Medtronic

Medtronic

Publications / Presentations

The SSE Group & UC San Diego - Innovation and Lessons Learned from Applying STPA for Medical Device - Next Generation Automated External Defibrillator

Link

Codethink and Linux Foundation - An STPA on OpenAPS - a Linux Medical Device

Link

U.S. Food and Drug Administration - Extending STPA to Improve the Analysis of User Interface Software in Medical Devices

Link

U.S. Food and Drug Administration/Kansas State University/Underwriters Laboratories - Using STPA to Support Risk Management for Interoperable Medical Systems

Link

The SSE Group - System-Theoretic Process Analysis (STPA) in Medical Systems Risk Management

Link

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