One Table Holds Design Control Together

Design Inputs, Design Outputs, Design Verification and Design Validation (DV&V), and risk each live in their own document. That is where projects lose the thread.

Design Inputs, Design Outputs, Design Verification and Design Validation (DV&V), and risk each live in their own document.

That is where projects lose the thread.

The Design Input and Output Matrix is the table that ties them together, row by row.

It answers one question in a single scan.

Can you trace each User Need to its Product Requirement, to the Design Output, to the hazard it mitigates, and to the DV&V record that resolves it?

When that answer is one table, a reviewer builds the full picture in a single pass.

The missing control jumps out before anyone points to it.

Spread the same answer across five disconnected documents and that picture never forms.

The trace gets rebuilt by hand every time.

Each row carries an identifier in every cell.

User Requirement ID. Product Requirement ID. Reference. Risk Control ID. DV&V Record. Design Output.

An empty cell is not a formatting issue. It is a gap in the design.

A meaningful N/A or a phase-appropriate TBD is an answer.

A blank is a question nobody answered.

21 CFR 820.10(c) and ISO 13485 Section 7.3.3 ask for design documentation that is complete, unambiguous, and traceable.

The matrix is the artifact that shows it.

The matrix is not paperwork. It is how you find the gaps that make the product safer.

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