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Summary

Design and development plans establish your systematic approach to transforming user needs into compliant medical devices. These plans define the framework for both software and hardware development, ensuring traceability, risk management, and regulatory compliance throughout your product lifecycle while preventing costly rework and documentation gaps.

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Regulatory Context

Under 21 CFR Part 820.30 (Design Controls), the FDA requires:
  • Documented development planning describing design activities and responsibilities
  • Software lifecycle processes following IEC 62304 consensus standard
  • Hardware development approach with systematic materials selection and verification
  • Risk management integration throughout development phases
  • Design History File (DHF) documentation for all activities
Standards applicable:
  • IEC 62304:2006 - Medical device software lifecycle processes
  • ISO 14971:2019 - Application of risk management to medical devices
  • ISO 13485:2016 - Medical devices quality management systems
  • IEC 60601-1 - Medical electrical equipment safety (if applicable)
Special attention required for:
  • Software safety classification accuracy - misclassification leads to inadequate development rigor
  • SOUP vulnerability management and ongoing monitoring for software components
  • Biocompatibility testing requirements for hardware materials in patient contact
  • Cybersecurity considerations per FDA guidance for connected devices

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Overview

Design and development plans serve as your regulatory roadmap for creating compliant medical devices by establishing structured processes that transform user needs into market-ready products. These plans are essential for demonstrating to regulatory authorities that your development follows recognized standards while ensuring your team has clear guidance throughout the product lifecycle. The Software Development and Maintenance Plan addresses the unique challenges of medical device software development. This plan establishes your approach to software safety classification according to IEC 62304, defines development lifecycle methodology, and implements risk-based development processes. It covers critical areas including configuration management, Software of Unknown Provenance (SOUP) management, verification strategies, and post-market maintenance procedures. The plan ensures your software development generates the documentation needed for regulatory submissions while maintaining traceability from user needs through implementation to verification activities. Your Hardware Design and Development Plan provides the framework for designing physical device components that meet safety, performance, and regulatory requirements. This plan addresses materials selection with biocompatibility considerations, component sourcing and qualification, prototype development strategies, and comprehensive verification testing approaches. It establishes clear development phases from conceptual design through manufacturing transfer, ensuring hardware components meet their intended specifications while maintaining safety throughout the device service life. Both plans integrate risk management activities throughout development, ensuring identified hazards are systematically addressed through design controls and verification activities. They establish clear team responsibilities across functional groups while defining interfaces between software and hardware development activities. The plans also address configuration management and change control processes that maintain design integrity as your device evolves. These development plans work together to create a comprehensive framework that addresses the complexities of modern medical device development. They ensure your development activities generate the evidence needed for regulatory submissions while preventing the common pitfalls of unstructured development that lead to compliance gaps, missed requirements, and costly rework. The plans also establish the foundation for ongoing product maintenance and post-market surveillance activities that ensure continued compliance throughout your device’s market life. The structured approach defined in these plans provides regulatory confidence by demonstrating your development follows established best practices and recognized standards. This systematic methodology helps you manage development complexity while ensuring all regulatory requirements are addressed consistently and thoroughly throughout your product development process.