The question behind the checklist
An engineer brings a standards list to a project review. It looks impressive: several pages, plenty of familiar numbers and a reassuring number of ticks.
Then somebody asks: “Why do these standards apply to this device?”
That is where the useful discussion starts.
Standards selection is an engineering and regulatory judgement. A long list is only useful when the team can explain what each standard contributes, where it applies and what evidence will demonstrate conformity.
Start with the device and its intended purpose
Before opening the standards catalogue, define what the device does, who uses it, where it operates and what claims you intend to make. Consider patient contact, energy sources, software, connectivity, sterility, accessories and foreseeable misuse.
A reusable surgical instrument, an infusion pump and a diagnostic application need very different evidence. Sharing a regulatory class does not give them a common test programme.
For products within the EU MDR, Annex I sets out the General Safety and Performance Requirements. Annex II requires the technical documentation to explain the applicable requirements, the methods used to demonstrate conformity and the supporting evidence. The standards assessment should serve that structure. EU MDR, Annexes I and II.
Harmonised does not mean universally applicable
Standards are generally voluntary. A harmonised European standard whose reference is published in the Official Journal can provide a presumption of conformity with the MDR requirements it covers. That does not mean every requirement, every device or every edition is covered. European Commission: harmonised standards.
Keep three questions separate: does the standard fit the product; which edition and amendments will you use; and what regulatory coverage does that European version provide?
An international publication date alone does not answer all three. Check the current Official Journal references, applicable restrictions and the standard’s European annexes. Where newer technical requirements are relevant, assess the impact and document the decision.
Build the standards set around the product
Think in layers: lifecycle processes, product safety, particular device requirements and the characteristics of the actual design.
The following are starting points for assessment, not a mandatory checklist or a statement that every listed standard is MDR-harmonised.
| Product or characteristic | Standards to consider | The question to resolve |
|---|---|---|
| Medical electrical equipment | IEC 60601-1, relevant collateral and particular standards | What basic safety and essential performance must be maintained? |
| Medical-device software | IEC 62304, alongside product-level requirements and validation | How will software development and maintenance be controlled? |
| Needle-based injection system | Relevant parts of ISO 11608 | Which requirements and test methods fit the delivery mechanism and functions? |
| Patient contact | Relevant parts of ISO 10993 | What biological risks arise from the finished device and its contact conditions? |
| Terminally sterilised device | Applicable sterilisation standards and ISO 11607 | How will sterilisation and the sterile barrier be validated and maintained? |
The IEC explicitly states that IEC 60601-1 should not be used alone where a particular standard exists. IEC 62304 addresses software lifecycle processes for both standalone and incorporated medical-device software. ISO 11608-1 addresses needle-based injection systems. These scopes are useful starting points for the assessment. IEC 60601-1, IEC 62304, ISO 11608-1.
A small design change can change the assessment
Consider a device originally intended for professional use in a controlled clinical environment. A proposed home-use version changes the users, surroundings and available support.
For medical electrical equipment within its scope, IEC 60601-1-11 addresses home healthcare use. The assessment also needs to revisit the practical consequences for the design: instructions, handling, foreseeable mistakes, environmental exposure and recovery from faults. IEC 60601-1-11 scope.
Adding connectivity raises another set of questions about data integrity, security and updates. A change to patient-contact materials raises biological-evaluation questions. Standards selection should therefore remain part of change control throughout the product lifecycle.
Make the reasoning visible
A useful standards applicability matrix records the standard and edition, the inclusion or exclusion rationale, relevant clauses, regulatory coverage, required evidence and an accountable owner.
It should make a design review easier: “This requirement applies; here is how we address it; here is the evidence.”
ISO 13485 certification cannot substitute for that product evidence. Neither can a successful electrical-safety test stand in for the complete safety, performance and clinical-evidence case.
A well-chosen standards set gives the team a defensible route from the device’s intended purpose to the evidence needed to support it.
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Key takeaways
- Start with the intended purpose, design characteristics and risks of the actual device.
- Assess applicability, edition and regulatory coverage as separate questions.
- Connect each selected standard to requirements, evidence and an accountable owner.
- Review the assessment when the product or its intended use changes.