Overview
ISO 26782:2009 - "Anaesthetic and respiratory equipment - Spirometers intended for the measurement of time forced expired volumes in humans" defines requirements for spirometers used to assess pulmonary function in humans weighing more than 10 kg. The standard applies to stand‑alone spirometers and spirometry modules integrated into lung function systems, regardless of the measuring method. Continuous patient monitoring devices are excluded.
Key topics and technical requirements
ISO 26782 sets out requirements and test methods that give confidence in spirometer performance and safety. Major topics include:
- Measurement scope: Timed forced expiratory volumes (e.g., FEVt) and forced vital capacity (FVC) over the vital‑capacity range for subjects >10 kg.
- Performance requirements: Accuracy, linearity, repeatability, measurement range, and recording time - with defined test procedures (see Annexes for test profiles and methods).
- Start and end criteria: Definitions and requirements for determining time zero, start and end of forced exhalation to ensure consistent FEV and FVC measurements.
- Impedance and volume recording: Requirements for expiratory impedance and graphical/volume trace presentation (including aspect ratios and recording fidelity).
- Safety and construction: Electrical and mechanical safety (referencing IEC 60601‑1), effects of dropping hand‑held components, calibration and re‑assembly considerations.
- Identification and documentation: Marking, legibility, model references, accompanying documents and instructions for use.
- Infection control and biocompatibility: Cleaning, sterilization and disinfection procedures, handling of reusable and sterile parts, and relevant biocompatibility obligations.
- Testing and verification: Normative annexes describe accuracy, linearity and impedance tests plus defined test profiles for objective verification. Informative annexes include rationale and environmental aspects.
Practical applications and who uses it
ISO 26782 is essential for stakeholders involved in spirometry device development, procurement and clinical use:
- Manufacturers - design, testing, labeling and instructions for spirometers and accessories to meet international requirements.
- Test laboratories & conformity assessors - perform accuracy, linearity and impedance tests per the standard’s normative methods.
- Clinical engineers & biomedical departments - implement calibration, maintenance and sterilization procedures compatible with the standard.
- Regulatory and procurement teams - evaluate device compliance for hospital purchase or market clearance.
- Clinicians and respiratory therapists - rely on compliant devices for reliable FEV/FVC measurements in pre‑op assessment, diagnostics, public health surveys and clinical trials.
Related standards
- IEC 60601‑1 - medical electrical equipment safety
- ISO 10993‑1 - biological evaluation of medical devices
- ISO 14937 - sterilization process requirements
- ISO 15223‑1 - medical device labeling symbols
- ATS/ERS recommendations for standardized spirometry (complements clinical guidance)
Keywords: ISO 26782, spirometer standard, spirometry, pulmonary function, forced expiratory volume, FEV, FVC, medical device standard, spirometers standards.
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