When medical devices and in vitro diagnostic (IVD) products enter new markets, the instructions for use (IFU) serve two critical functions: guiding healthcare professionals or end users through safe operation, and meeting the strict documentation requirements of local regulatory bodies. A typical medical device IFU combines dense technical explanations with step-by-step illustrated procedures on a single page or folded insert. Whether translating an English source into Simplified Chinese, Taiwan Traditional Chinese, or other target languages, the process requires more than word-for-word conversion. It demands systematic terminology alignment, cross-checking between text and graphics, and the careful preservation of conditional warnings.
In our Medical & Life Sciences translation projects, focusing on three core areas helps keep IFU documentation accurate, clear and ready for regulatory or technical review.
1. Three Core Challenges in Medical Device IFU Localisation
Aligning Dense Technical Text with Step-by-Step Illustrations
Diagnostic kits and portable medical devices often rely on compact layouts where written instructions work alongside visual diagrams—showing dropper angles, cassette windows, or timer icons. If a component name, action verb, or step number in the body text does not match the label in the accompanying illustration, users may hesitate or misinterpret the procedure.
Managing Regional Language Conventions Across Chinese Markets
For brands entering Greater China, Simplified Chinese (Mainland China), Traditional Chinese (Taiwan), and Traditional Chinese (Hong Kong) cannot be treated as mere script conversions. Each market has distinct conventions for medical terminology, component naming, and regulatory phrasing. Relying on automated script conversion often results in unnatural phrasing or terminology that does not match local product registration records.
These terms illustrate regional conventions; final wording must follow the product context, approved terminology and target-market requirements.
| English Source Term | Simplified Chinese (Mainland) | Traditional Chinese (Taiwan) | Practical Context & Considerations |
|---|---|---|---|
| Swab / Nasal Swab | 拭子 / 鼻拭子 | 採檢棒 / 鼻腔拭子 | Must align with local registration filings and packaging labels. |
| Buffer / Extraction Tube | 缓冲液 / 裂解管（提取管） | 緩衝液 / 萃取管 | Needs exact correspondence with labels shown in procedural graphics. |
| Cassette / Test Device | 检测卡 / 测试卡 | 檢測卡匣 / 測試盤 | Affects downstream instructions (e.g., adding drops to the sample well). |
| Invalid Result | 无效结果 | 無效結果 / 判定無效 | Must work clearly alongside diagrams of Control (C) and Test (T) lines. |
Preserving Qualifications in Result Interpretation and Warnings
Sections covering Intended Use, Warnings and Precautions, and Limitations contain carefully structured conditional statements. For example, a statement noting that a negative result does not rule out infection and must be evaluated alongside clinical observations requires exact logical rendering. Translation must preserve every qualification without softening safety warnings or introducing unauthorised medical conclusions.
2. A Traceable Workflow for IFU Translation and Review
To keep multilingual IFUs consistent from initial drafting through desktop publishing (DTP), LIG organises the workflow around three practical checkpoints:
Establishing Context-Based Terminology Early
Before translation begins, our team reviews the test principle, the list of materials provided, and the full operating procedure to build a project-specific termbase. Understanding how each physical component functions in context prevents inconsistencies—ensuring that a part listed under Materials Provided is referred to by the exact same term in the Test Procedure and Illustrated Guide.
Cross-Checking Body Text Against Illustrations
During professional translation and quality review, linguists and reviewers check the translated text side-by-side with the visual assets, paying close attention to:Sequence and numbering: Confirming that numbered steps in the text correspond directly to numbered callouts in the illustrations. Figures, timing, and units: Verifying that drop counts (e.g., 3 drops), volumes (μL), incubation times (e.g., 15–20 minutes), and storage temperatures (e.g., 2°C–30°C) remain identical across text and graphics.
Glossary of symbols: Ensuring standard IVD symbols, batch code labels, and expiry notices follow target-market conventions.
Recording Source Queries for Client Confirmation
Medical documentation leaves no room for guesswork. When source files contain ambiguous phrasing, conflicting numbers, or undefined abbreviations, linguists log the exact location and question in a structured Source Query Log. These queries are submitted to the client’s technical or regulatory team for confirmation, and approved answers are applied consistently across all language versions.
3. Case in Point: Delivering Multi-Variant IFU Documentation
In a project, LIG supported the Abbott Rapid Diagnostic Product IFU Translation, coordinating the translation of English source materials into both Simplified Chinese and Taiwan Traditional Chinese. By aligning component terminology early, cross-checking procedural steps against illustrations, and maintaining strict review over result interpretation and warnings, our team delivered versions tailored to the reading conventions of each target market while preserving identical technical meaning. Alongside the final translations, the deliverables included terminology records, revision tracking, and a documented list of source queries to support the client’s internal quality and regulatory sign-off.
Prepare Your Medical Documentation for International Markets
Whether you are localising IFUs for rapid diagnostic kits, user manuals for medical equipment, or documentation for clinical and regulatory submissions, a structured workflow helps reduce review cycles and compliance risks. If you are planning an upcoming medical or life sciences localisation project, contact LIG to discuss your requirements ↗. Share your document type, target languages, and timeline, and we will prepare a clear project plan and quote.