Medical Devices

Design Controls

Systematic practices applied during product design and development to ensure devices meet user needs and intended uses.

Usage Examples

Design controls were implemented from concept to market.
The DHF contains all design control documentation.
Design validation used clinical simulation testing.

What is Design Controls?

Design controls are requirements in 21 CFR 820.30 for medical device manufacturers to apply practices during design and development. They ensure devices meet user needs, intended uses, and specified requirements through systematic verification and validation.

Design controls include: design planning, design input, design output, design review, design verification, design validation, design transfer, design changes, and design history file (DHF).

The design waterfall model links inputs to outputs through verification, while design validation confirms the device meets user needs in actual or simulated use environments.

Regulatory Context

This term appears most often in medical devices workflows where submission quality, regulatory evidence, and audit readiness depend on consistent language. It is commonly referenced alongside 21 CFR 820 30, ISO 13485.

FDA CDRHEMAHealth Canada

When This Matters

Design controls were implemented from concept to market.
The DHF contains all design control documentation.
Design validation used clinical simulation testing.

Common Mistakes

Using drug-only submission assumptions for device regulatory pathways.
Ignoring post-market obligations in pre-market planning.
Weak predicate and classification rationale in dossier narratives.

Related Regulations

21 CFR 820 30ISO 13485

Frequently Asked Questions

Design controls are required for Class II devices (with limited exemptions) and all Class III devices. Most Class I devices are exempt from design controls.

Verification confirms design output meets design input (Did we build it right?). Validation confirms the device meets user needs and intended use (Did we build the right thing?).