Last year I watched a mid-size orthopedic implant manufacturer lose eight months of European market access over a single word.
The word was "should."
Their IFU — Instructions for Use — had been translated from English into German, French, Italian, Spanish, and Polish by a generalist translation agency. Good translators, technically competent, solid linguistic work. The problem wasn't the quality of the translation. The problem was that the original English source used "should" in a safety-critical context, and the translators carried that ambiguity into every target language.
In EU MDR terms, "should" is unenforceable. You either "shall" do something or you don't. The notified body reviewing their technical file flagged it as a non-conformity. The corrective action plan required updating source documentation, re-translating every affected IFU across all languages, and resubmitting. Eight months. Lost revenue they never got back.
This is what happens when you treat medical device translation as a language problem instead of a regulatory problem.
Why IFU translation is harder than anyone expects
Instructions for Use sit at the intersection of three things that don't naturally get along: regulatory precision, user comprehension, and manufacturing timelines.
EU Medical Device Regulation (MDR) 2017/745 requires that information accompanying a medical device be available in an official EU language. The US FDA has its own labeling requirements — English suffices for most cases, but patient-facing materials may need Spanish and other languages depending on the patient population. ISO 13485, the quality management system standard for medical devices, requires that translation processes be validated and controlled as part of the QMS. Not "we used a good translator." Validated. Controlled. Auditable.
Then there's the user comprehension problem. An IFU for a Class IIa infusion pump is read by nurses, biomedical engineers, and sometimes patients or caregivers. The language needs to be technically precise enough for a notified body reviewer while being clear enough for a tired nurse at 3 AM following a step-by-step cleaning procedure. The translation has to serve both audiences.
The compliance gaps that keep showing up
I've reviewed IFU translations for probably forty or fifty medical device companies by now, and the same gaps appear with depressing regularity.
▸ Source documentation quality
A lot of medical device IFUs are written by engineers who are great at their jobs but not necessarily great at writing clear instructions for non-engineers. Sentences that are technically accurate but practically confusing in English become genuinely dangerous when translated. "The device should be calibrated prior to use" might translate into something a nurse interprets as optional rather than mandatory. The fix isn't better translation. It's better source writing.
▸ Terminology management
Medical device terminology is specific, regulated, and inconsistent across markets. The same component might be called one thing in English and something slightly different in another language, depending on how the local regulatory framework defines it. A glossary isn't a nice-to-have — it's a regulatory requirement that needs to be maintained as a living document.
▸ Risk-related information
Warnings, contraindications, adverse event descriptions — these carry legal liability. A mistranslated warning is a patient safety issue and a regulatory non-conformity simultaneously. I've seen cases where a warning about a specific patient population was translated in a way that inadvertently excluded a different population that was actually at risk. This is why IFU translation requires both linguists who understand the target language and subject matter experts who understand the clinical context.
▸ Symbols and graphical information
ISO 15223-1 defines medical device labeling symbols, and their explanatory text needs translation that matches the defined meaning exactly. Graphical elements in the IFU itself may need adaptation if they reference features or measurements that differ by market.
▸ Post-market surveillance integration
When a field safety corrective action requires updating an IFU in twelve languages in two weeks, turnaround time matters. Pre-built glossaries, validated translation memories, established reviewer workflows, and documented processes that satisfy ISO 13485 — all should be in place before you need them, not assembled after an adverse event.
Translation vs. regulatory localization
A translation agency gives you words in another language. A medical device localization partner gives you regulatory compliance.
When a notified body reviews your technical file, they're not evaluating whether your French is grammatically correct. They're evaluating whether your IFU meets the requirements of the MDR, ISO 13485, and applicable national regulations. Can you demonstrate controlled translation processes? Consistent terminology across languages? Subject matter expert review of risk information? Quick, accurate post-market updates?
These aren't translation questions. They're quality system questions that happen to involve translation.
At Artlangs Translation, medical device IFU and documentation localization is handled by translators with medical device industry experience, supported by terminology management systems that meet ISO 13485 requirements, with reviewer workflows that include subject matter expert validation. Across 230+ languages. Because regulatory compliance doesn't allow for "close enough."
