What is the Design History File, and does Blue Dog create it?

The Design History File (DHF) is the formal record of the design control process: design inputs, outputs, reviews, verification, validation, and design changes. It is required by FDA 21 CFR 820 and ISO 13485. Blue Dog provides the infrastructure to build one: complete version history with commits, approvals, and audit trails. You create the DHF using these tools. Because every engineering change is versioned, the DHF is constructed during development, capturing changes as they happen. The team is responsible for defining design control procedures and ensuring the DHF structure meets regulatory expectations.

Does Blue Dog help with FDA 510(k) submissions?

Blue Dog supports the traceability and design documentation that 510(k) submissions require. The 510(k) process demands a predicate device comparison, substantial equivalence evidence, and a complete design history. Blue Dog makes it easier to assemble that design history because your version control already contains the changes, approvals, and rationale. You still own writing the submission narrative, running the clinical/biocompatibility testing, and compiling the final package.

Is OpenVault validated for regulated use?

OpenVault is open source software (MIT licensed). The FDA does not validate software. You validate the tools you use in your quality system. Teams using OpenVault in regulated environments perform their own validation: qualification testing, documentation of system requirements, user access controls, backup and disaster recovery procedures. This is standard practice for any software in a medical device quality system. OpenVault's openness is actually an advantage here because you can inspect the code, validate the security model, and integrate it into your change control and configuration management.

How does version control support design change control?

FDA and ISO standards require that design changes be documented, reviewed, and approved before implementation. Blue Dog's branching workflow aligns with this requirement. A design change is made on a branch, reviewed by stakeholders (with 3D diffs for clarity), approved, and then merged. The approval is recorded in the version history. This creates a documented and auditable design change process without requiring separate change management tools.

Can OpenVault work with the CAD tools our team uses?

OpenVault works with SolidWorks, Fusion, CATIA, NX, KiCad, Altium, and FreeCAD. It tracks the files these tools produce (STEP, IGES, native part files) without requiring the CAD tool itself to understand versioning. If your team uses mixed CAD tools, OpenVault's CAD-agnostic approach means you can manage designs across tools without format conversion or lock-in.

How do we maintain audit trail security and integrity?

OpenVault uses Git as its foundation, which provides cryptographic commit hashing and immutability once commits are pushed. For regulated use, Git repositories should be hosted on infrastructure you control or on a provider with documented security and audit controls. ToolCrib Cloud adds role-based access control, approval workflows, and audit logging. Teams must implement access controls, backup procedures, and disaster recovery as part of their quality system validation.

Medical Device Engineering

Design Controls and Traceability for Regulated Medical Devices

Medical device development requires complete traceability from design requirements through manufacturing controls. Blue Dog supports the Design History File, change documentation, and audit trails that ISO 13485, FDA 21 CFR 820, and 510(k) submissions expect.

Why design control and traceability matter in medical devices

Medical device companies operate under strict regulatory frameworks. In the United States, the FDA requires adherence to 21 CFR Part 820 (Quality System Regulation) and 21 CFR Part 11 (Electronic Records, Electronic Signatures). Internationally, ISO 13485 (Medical Device Quality Management Systems) sets the standard. These frameworks exist to ensure that devices are safe, effective, and manufactured consistently.

At the heart of these regulations is design control. Design control is the process by which device design requirements are translated into device specifications, and those specifications are verified and validated before manufacturing. The Design History File (DHF) is the formal record of that process: every design input, design output, design review, verification test, validation test, and design change.

During product development, requirements change. An early concept evolves into a prototype. Prototype testing surfaces a tolerance issue. That issue drives a design modification. Manufacturing feedback suggests an assembly improvement. Each change must be recorded, reviewed, and approved. When the time comes for a 510(k) submission or audit, the DHF must show the complete path from initial concept to final design, with no gaps.

The challenge is practical. Design changes happen in CAD files, simulation tools, test reports, and process documentation. Keeping these pieces coherent and building a trustworthy DHF requires discipline. Teams without good tools resort to folders, spreadsheets, and periodic document roll-ups. The friction introduces risk: files get lost, versions diverge, and the DHF reconstruction becomes an urgent project weeks before submission.

Blue Dog solves this by treating engineering data like source code. Every design change becomes an immutable record with author, timestamp, and rationale. The DHF is not constructed after the fact. It is built as a byproduct of how the team does work.

Design controls and the Design History File

The ISO 13485 standard and FDA 21 CFR 820 both require documented design control activities. The Design History File is the artifact that proves these activities occurred. A complete DHF includes:

Design input requirements (functional, performance, regulatory, safety)
Design output specifications (design drawings, CAD models, BOMs, process specifications)
Design review records (who reviewed, what they approved, when)
Verification testing documentation (test protocols, test data, pass/fail results)
Validation testing documentation (clinical studies, field performance, safety)
Design change records (what changed, who approved, traceability to requirements)

Traditional PDM and document management systems store these as files in folders. A design drawing goes in one place, a test report in another, a change request in a third. The DHF team later constructs the narrative and compiles a submission package.

OpenVault provides an alternative. Every engineering change becomes a commit: the CAD file changes, the BOM updates, and the design justification all travel together as one versioned unit. You can diff any two revisions to see exactly what changed. You can audit the full history to answer "who made this change, when, and why." Importantly, this structure is built during development. When DHF time arrives, you are not reconstructing history. You are exporting the record you have been building.

For teams using ToolCrib Cloud, the workflow tightens further. Design changes go through an approval process where stakeholders review 3D diffs, leave comments, and sign off. Once approved and merged, the change is locked in the version history. The approval record becomes part of the audit trail automatically.

The result is a DHF that is traceable at the commit level, complete with approvals and timestamps, reducing the burden of later documentation and reconstruction.

Traceability and audit trails under FDA 21 CFR 820 and ISO 13485

Both FDA and ISO standards require traceability: the ability to trace a design change back to its requirement, and forward to its verification and validation.

FDA 21 CFR 820.30 (Design Controls) specifically requires:

Design input procedures to establish and document design requirements
Design output procedures to ensure outputs meet the corresponding inputs
Design review procedures with evidence of approval
Design verification procedures to confirm design outputs meet design inputs
Design validation procedures to ensure the device meets intended use
Design transfer procedures to ensure the design is correctly translated to production
Design changes with documented justification, review, and approval

ISO 13485:2016 Section 8.3 (Design and Development) requires similarly comprehensive documentation.

In practice, this means you must be able to answer:

What requirement led to this design change?
What review approved this change before implementation?
What verification testing confirmed this design works?
What validation testing confirmed this device meets intended use?
When was this change made, by whom, and why?

Blue Dog's version control model makes these questions answerable at commit granularity. Every change has a message explaining the "why." Every commit is timestamped and attributed to an author. If a change went through ToolCrib Cloud approval workflows, the approval records are persisted. If that change had associated test data or design notes, they can be versioned alongside the CAD file as one coherent commit.

When an FDA auditor or ISO 13485 assessor asks for traceability, the engineering team can walk through the commit log and show exactly how the design evolved.

How versioned engineering data supports design history and compliance

The core insight is that design history and compliance audits emerge naturally from practicing good version control. Rather than adding extra compliance layers on top, you build the capability into your core engineering workflow.

Versioning supports design inputs and outputs. CAD models are the design output. BOMs are design outputs. Process specifications are design outputs. These files change throughout development as requirements are refined and designs are iterated. OpenVault tracks all of them, with full history. You can see when each piece was added, refined, or changed. No file exists in isolation. The model, drawing, BOM, and tolerance stack-up notes all travel together as one versioned unit.

Branching supports design reviews and change control. A design change does not edit main production designs in place. Instead, an engineer branches, makes the change, and opens it for review. Reviewers see the change clearly in a 3D diff. Once approved, the change is merged. The review process is built into the workflow, and the approval is recorded. This aligns with FDA expectations: changes are made intentionally, reviewed by qualified people, and documented before they are released.

Complete history supports the Design History File. Because every change is committed, the history is always complete. You do not reconstruct the DHF at submission time. You extract it from the version history. The audit trail is built during development, with every change recorded contemporaneously. This matters: DHFs built during development are clean and trustworthy. DHFs reconstructed later can have gaps, inconsistencies, and lost context.

Audit trails support compliance verification. When an auditor asks "show me every change made to this design," you show them the commit log. When they ask "who approved this change," you show the approval record. When they ask "what requirements drove this modification," you show the commit message and any linked documentation. The ability to answer quickly and completely is what auditors look for.

Critically, Blue Dog does not guarantee compliance. Compliance is the team's responsibility. The team must define design control procedures, establish change review boards, run verification and validation testing, and maintain the DHF structure. What Blue Dog does is support the traceability and documentation that those procedures expect. Good tools make good discipline possible. Blue Dog makes it practical.

Medical device compliance questions

What is the Design History File, and does Blue Dog create it?: The Design History File (DHF) is the formal record of the design control process: design inputs, outputs, reviews, verification, validation, and design changes. It is required by FDA 21 CFR 820 and ISO 13485. Blue Dog provides the infrastructure to build one: complete version history with commits, approvals, and audit trails. You create the DHF using these tools. Because every engineering change is versioned, the DHF is constructed during development, capturing changes as they happen. The team is responsible for defining design control procedures and ensuring the DHF structure meets regulatory expectations.
Does Blue Dog help with FDA 510(k) submissions?: Blue Dog supports the traceability and design documentation that 510(k) submissions require. The 510(k) process demands a predicate device comparison, substantial equivalence evidence, and a complete design history. Blue Dog makes it easier to assemble that design history because your version control already contains the changes, approvals, and rationale. You still own writing the submission narrative, running the clinical/biocompatibility testing, and compiling the final package.
Is OpenVault validated for regulated use?: OpenVault is open source software (MIT licensed). The FDA does not validate software. You validate the tools you use in your quality system. Teams using OpenVault in regulated environments perform their own validation: qualification testing, documentation of system requirements, user access controls, backup and disaster recovery procedures. This is standard practice for any software in a medical device quality system. OpenVault's openness is actually an advantage here because you can inspect the code, validate the security model, and integrate it into your change control and configuration management.
How does version control support design change control?: FDA and ISO standards require that design changes be documented, reviewed, and approved before implementation. Blue Dog's branching workflow aligns with this requirement. A design change is made on a branch, reviewed by stakeholders (with 3D diffs for clarity), approved, and then merged. The approval is recorded in the version history. This creates a documented and auditable design change process without requiring separate change management tools.
Can OpenVault work with the CAD tools our team uses?: OpenVault works with SolidWorks, Fusion, CATIA, NX, KiCad, Altium, and FreeCAD. It tracks the files these tools produce (STEP, IGES, native part files) without requiring the CAD tool itself to understand versioning. If your team uses mixed CAD tools, OpenVault's CAD-agnostic approach means you can manage designs across tools without format conversion or lock-in.
How do we maintain audit trail security and integrity?: OpenVault uses Git as its foundation, which provides cryptographic commit hashing and immutability once commits are pushed. For regulated use, Git repositories should be hosted on infrastructure you control or on a provider with documented security and audit controls. ToolCrib Cloud adds role-based access control, approval workflows, and audit logging. Teams must implement access controls, backup procedures, and disaster recovery as part of their quality system validation.

Build design history and traceability today

OpenVault is free and open source. Start versioning your medical device designs with complete audit trails and change documentation. ToolCrib Cloud adds approval workflows and compliance-focused features for teams ready to scale.

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