Iec 62304

Overview

IEC 62304 medical device software lifecycle framework. Software safety classification (Class A/B/C), design control, verification, validation, and regulatory documentation for FDA and EU MDR submissions.

Software Safety Classification

• Class A -- No injury or damage to health (e.g., log viewer)
• Class B -- Non-serious injury (e.g., infusion pump alarm)
• Class C -- Death or serious injury (e.g., radiation therapy planning)

Key Processes

• Design Control -- Requirements -> Design -> Implementation -> Verification -> Validation
• Risk Management (ISO 14971) -- Hazard identification, risk estimation, risk control
• Software Change Management -- Change classification (bug fix, enhancement, new feature)
• Problem Resolution -- CAPA for software defects
• Cybersecurity -- Threat modeling, vulnerability management

Documentation Checklist

- Software Development Plan
- Software Requirements Specification
- Software Architecture Document
- Software Detailed Design
- Software Unit Verification
- Software Integration Testing
- Software System Testing
- Software Release Notes
- Software Maintenance Plan
- Software Risk Management File