Overview
ISO 8009:2014 - Mechanical contraceptives - Reusable natural and silicone rubber contraceptive diaphragms - Requirements and tests specifies minimum requirements and test methods for reusable diaphragms made from natural rubber and silicone rubber intended for contraceptive use. It sets design, material, dimensional, mechanical and labelling criteria and defines sampling and acceptance procedures for referee testing. The standard excludes other vaginal barrier devices (e.g., cervical caps, sponges, sheaths).
Key Topics and Technical Requirements
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Scope & classification
- Applies to reusable diaphragms only; not to other barrier devices.
- Diaphragms classified as Type 1 (coil-spring), Type 2 (flat-spring), and Type 3 (arcing‑spring).
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Materials & biocompatibility
- Dome and rim (excluding spring) must be made of natural or silicone rubber.
- New products or significant formulation/process changes require biocompatibility assessment per ISO 10993‑1 and related parts (cytotoxicity ISO 10993‑5; irritation/sensitization ISO 10993‑10).
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Design requirements
- Diaphragm = continuous film dome + integral peripheral rim with an encapsulated reinforcing spring.
- Spring must be fully encapsulated, centrally located, and jointed so it does not project through the rim.
- Surface finish: uniform, smooth, non-tacky.
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Dimensions
- Preferred nominal diameters: 55–100 mm in 5 mm increments.
- Diameter tolerance: two measurements must differ by ≤ 4% and mean within ±2 mm of nominal.
- Dome minimum thickness: 0.20 mm (measured at thinnest point).
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Mechanical & tensile properties
- Tensile strength and elongation at break are specified (median of 13 samples). Example minima from Table 1:
- Natural rubber tensile strength: 15 MPa (untreated), 11 MPa (oven‑treated).
- Silicone rubber tensile strength: 7 MPa (untreated and oven‑treated).
- Elongation at break: natural 650%/500% (untreated/oven), silicone 350%.
- Rim/spring compression and fatigue resistance and twisting behavior tested (Annexes E, F). After repeated compression, diameter retention criteria are specified.
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Sampling & quality
- Sampling based on ISO 2859‑1; acceptance quality limits (AQLs) are for referee testing. Manufacturers are encouraged to aim for defect‑free production.
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Test documentation, packaging & labelling
- Test reports, storage, packaging and user care instructions are specified (Annexes H, I).
Applications - Who Uses ISO 8009:2014
- Manufacturers - product design, quality control, verification of reusable diaphragm performance.
- Testing laboratories - conduct tensile, ageing, compression, and defect inspections using the annexed methods.
- Regulatory and procurement bodies - assess compliance for market approval and purchasing specifications.
- Quality managers and R&D teams - guide material selection, process changes, and biocompatibility testing.
Related Standards (normative references)
ISO 8009:2014 is essential for ensuring reusable contraceptive diaphragms meet consistent safety, durability and performance expectations. Keywords: ISO 8009:2014, reusable contraceptive diaphragms, natural rubber, silicone rubber, tensile strength, dome thickness, compression resistance, biocompatibility, diaphragm dimensions.