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January 10, 2026

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Slovakia Decree No. 158/2015 Annex 8: Requirements for Sterilisation Validation of Medical Devices

Slovakia Decree No. 158/2015 Annex 8: Requirements for Sterilisation Validation of Medical Devices

Annex 8 (Príloha č. 8) to Decree No. 158/2015 Z.z. details the sterilisation validation obligations for sterile medical devices (including sterile Class I, IIa, IIb, III) under the Slovak transposition of Directive 93/42/EEC (MDD) Annex I essential requirements 8.3–8.6. It applies to all devices claiming sterility and remains relevant for legacy sterile devices during the MDR transitional period (Regulation (EU) 2017/745 Article 120). Source: Decree No. 158/2015 Z.z. Annex 8 (https://www.slov-lex.sk/ezbierky/pravne-predpisy/SK/ZZ/2015/158/20151215#prilohy.priloha-priloha_c_8_k_vyhlaske_c_158_2015_z_z.oznacenie)

2. Sterilisation Methods Covered

The annex covers common terminal sterilisation methods:

  • Ethylene oxide (EO/EtO)
  • Moist heat (steam autoclaving)
  • Dry heat
  • Radiation (gamma, electron beam, X-ray)
  • Other validated methods (e.g., hydrogen peroxide plasma, ozone)

Aseptic processing is addressed with stricter controls where terminal sterilisation is not feasible. Source: Decree No. 158/2015 Z.z. Annex 8 method provisions (https://www.slov-lex.sk/ezbierky/pravne-predpisy/SK/ZZ/2015/158/20151215#prilohy.priloha-priloha_c_8_k_vyhlaske_c_158_2015_z_z.oznacenie)

3. Validation Requirements

Manufacturers must demonstrate:

  • Process validation per harmonised standards (EN ISO 11135 for EO, EN ISO 17665 for moist heat, EN ISO 11137 for radiation)
  • Achievement of sterility assurance level (SAL) ≤ 10⁻⁶
  • Bioburden monitoring and control
  • Worst-case product loading and cycle parameters
  • Physical, chemical and biological indicators validation

Validation data must be part of the technical documentation. Source: Decree No. 158/2015 Z.z. Annex 8 validation section (https://www.slov-lex.sk/ezbierky/pravne-predpisy/SK/ZZ/2015/158/20151215#prilohy.priloha-priloha_c_8_k_vyhlaske_c_158_2015_z_z.oznacenie)

4. Packaging and Labelling Obligations

  • Sterile barrier system must maintain sterility until point of use
  • Packaging validation required (EN ISO 11607 series)
  • Labelling must include: “STERILE”, method symbol (e.g., radiation symbol), “Do not re-sterilise” if applicable, lot/batch/expiry
  • Slovak language mandatory for end-user labelling

Source: Decree No. 158/2015 Z.z. Annex 8 packaging/labelling (https://www.slov-lex.sk/ezbierky/pravne-predpisy/SK/ZZ/2015/158/20151215#prilohy.priloha-priloha_c_8_k_vyhlaske_c_158_2015_z_z.oznacenie)

5. Routine Monitoring and Revalidation

  • Routine release testing (biological indicators, parametric release)
  • Annual revalidation or after significant changes (equipment, load, process parameters)
  • Ongoing bioburden trend monitoring
  • Change control impacting sterilisation requires revalidation

Source: Decree No. 158/2015 Z.z. Annex 8 monitoring/revalidation (https://www.slov-lex.sk/ezbierky/pravne-predpisy/SK/ZZ/2015/158/20151215#prilohy.priloha-priloha_c_8_k_vyhlaske_c_158_2015_z_z.oznacenie)

6. MDR Transition Considerations

Legacy sterile devices follow Annex 8 until MDD certificate expiry. Under full MDR:

  • Stricter validation per MDR Annex I Section 10.4–10.8
  • Notified body involvement for sterile Class IIa and higher
  • EUDAMED registration of sterilisation details

Source: Decree No. 158/2015 Z.z. Annex 8 (https://www.slov-lex.sk/ezbierky/pravne-predpisy/SK/ZZ/2015/158/20151215#prilohy.priloha-priloha_c_8_k_vyhlaske_c_158_2015_z_z.oznacenie)

7. RA Manager Practical Guidance

  • Map device to appropriate ISO standard for method
  • Document worst-case validation rationale
  • Maintain bioburden data trending
  • Prepare Slovak sterile labelling templates
  • Schedule annual revalidation calendar
  • Integrate sterilisation change control in QMS

Source: Decree No. 158/2015 Z.z. Annex 8 (https://www.slov-lex.sk/ezbierky/pravne-predpisy/SK/ZZ/2015/158/20151215#prilohy.priloha-priloha_c_8_k_vyhlaske_c_158_2015_z_z.oznacenie)

8. Common Validation Pitfalls

  • Inadequate bioburden sampling plan
  • Missing SAL justification for non-standard methods
  • Packaging integrity not validated to real shelf-life
  • No revalidation after equipment upgrades
  • Incomplete parametric release data

Source: Decree No. 158/2015 Z.z. Annex 8 practical notes (https://www.slov-lex.sk/ezbierky/pravne-predpisy/SK/ZZ/2015/158/20151215#prilohy.priloha-priloha_c_8_k_vyhlaske_c_158_2015_z_z.oznacenie)

9. ŠÚKL Expectations During Registration

ŠÚKL reviews sterilisation validation as part of higher-risk device submissions (Annex 3 Part B). Deficiencies may delay registration or trigger additional data requests. Source: Decree No. 158/2015 Z.z. Annex 8 in context of Annex 3 (https://www.slov-lex.sk/ezbierky/pravne-predpisy/SK/ZZ/2015/158/20151215#prilohy.priloha-priloha_c_8_k_vyhlaske_c_158_2015_z_z.oznacenie)

10. Alignment with Harmonised Standards

Annex 8 references key standards:

  • EN ISO 11135 (EO)
  • EN ISO 17665 (moist heat)
  • EN ISO 11137 (radiation)
  • EN ISO 11607 (packaging)

Compliance with current versions is expected. Source: Decree No. 158/2015 Z.z. Annex 8 (https://www.slov-lex.sk/ezbierky/pravne-predpisy/SK/ZZ/2015/158/20151215#prilohy.priloha-priloha_c_8_k_vyhlaske_c_158_2015_z_z.oznacenie)

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