KARL STORZ Customer Success StoryBuilding a robust ISO 10993 testing strategy

Reusable surgical instruments require reliable testing to demonstrate biological safety over their entire lifetime, including repeated reprocessing cycles.

Reusable surgical instruments require reliable testing to demonstrate biological safety over their entire lifetime, including repeated reprocessing cycles.

See how KARL STORZ worked with TÜV SÜD to plan and execute ISO 10993 testing, including chemical characterization and in-vitro cytotoxicity testing, to generate regulatory-grade evidence for submissions and lifecycle claims.

Customer testimonial

The key elements were strong technical expertise, clear communication, reliable project management, and a shared commitment to high-quality testing, patient safety and regulatory excellence.

Dr. Knut Jöchle

Executive Director RSB, KARL STORZ

KARL STORZ: Planning and executing ISO 10993 testing with TÜV SÜD

KARL STORZ needed a testing programme that could demonstrate that reusable surgical instruments remain biologically safe over their intended lifetime, including extensive reprocessing cycles. 

Together with TÜV SÜD, the company defined the ISO 10993 testing approach step by step, aligning extraction procedures, test parameters, laboratory capacity and project coordination to support reliable execution and keep timelines on track. 

The test programme focused on chemical characterization of device extracts according to ISO 10993-18 and in-vitro cytotoxicity testing according to ISO 10993-5. For complex reusable devices, suitable extraction vessels, representative conditions and intensified test parameters were essential to produce meaningful, regulator-ready results.

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What manufacturers can learn from their testing journey

Plan testing before execution

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Define the ISO 10993 testing strategy, extraction approach and acceptance needs before laboratory work begins.

Test under representative lifecycle conditions

[8 May 2025] Revised artwork

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Use extraction methods, chemical characterization and test parameters that reflect realistic worst-case use and repeated reprocessing scenarios.

Generate test data regulators can trust

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Use independent, internationally recognized laboratory testing to support technical documentation, regulatory submissions, lifecycle claims and global acceptance.

Ready to plan ISO 10993 testing for your medical devices?