Standards for Reusable Surgical Instruments: Understanding ISO, Materials & Procurement Documents

1. Four layers of evidence in surgical instrument quality

Instrument documentation can be considered in four related, but separate, layers:

1. Manufacturer and quality system: who manufactures the device, the legal entity named in any certification and the activities included in its scope.
2. Design and function: intended purpose, instrument type, dimensions, working-tip geometry, joints and relevant performance requirements.
3. Materials and product-level evidence: the stated alloy or steel grade, supporting specifications, test information and traceability documents where required.
4. Use, processing and lifecycle: instructions for use (IFU), cleaning, disinfection or sterilization, functional checks and maintenance.

A standard addressing one layer does not automatically establish compliance in another. The applicable evidence depends on the device's intended use, classification and the procurement requirements in the relevant jurisdiction.

2. ISO 13485:2016: a quality management system standard, not a certificate for each instrument

ISO 13485:2016 specifies quality management system requirements for organizations involved in medical devices, with an emphasis on applicable regulatory requirements. When a manufacturer presents an ISO 13485 certificate, buyers should establish the named legal entity, scope of activities, covered facilities and documented validity.

It does not mean that each pair of surgical scissors, forceps or rongeurs has been individually certified to ISO 13485. Nor does a quality-system certificate, on its own, prove the chemical composition, geographic origin or performance of a particular SKU.

Within the ELESUN supply chain, the ISO 13485:2016 certificate supplied for review is held at manufacturer level by ELESUN INTERNATIONAL; it is not a certificate issued to the ELESUN distributing legal entity in Vietnam. Product-level documentation should be assessed separately, according to the applicable product and documents available.

3. ISO 7151:2024: non-cutting articulated surgical instruments

ISO 7151:2024 specifies general requirements and corresponding test methods for a range of non-cutting articulated instruments used in surgery. It provides a useful point of reference for instruments that fall within that scope.

It should not be treated as covering every surgical tool, especially cutting scissors, bone-cutting rongeurs or electrosurgical devices. Any claim of compliance must be assessed against the precise device and supporting evidence.

When comparing catalogues, buyers should examine working-tip design, articulation, dimensions and intended use, rather than relying on a standard name alone.

4. ISO 7153-1:2016 and ASTM F899-23: what material standards establish

ISO 7153-1:2016 identifies metals commonly used to manufacture a range of standard surgical instruments, including instruments used in general surgery, orthopaedics and dentistry. The ISO scope cautions that it was not specifically developed for special applications such as implantology and minimally invasive surgery, although some aspects may be relevant.

ASTM F899-23 sets out chemical composition requirements for wrought stainless steels used to manufacture surgical instruments. It does not, by itself, certify every property of a finished device, including hardness, fatigue resistance, corrosion behaviour or clinical performance.

Commercial terms such as German Steel, Japanese Steel and French Steel should therefore be assessed by product family and configuration. A material-positioning statement is not a substitute for documentation supporting the specific product being purchased. Where specialized requirements apply, customers may request the relevant available material or technical documents for review.

5. ISO 17664-1:2021: manufacturer-supplied processing information

ISO 17664-1:2021 sets requirements for the information manufacturers provide about processing critical or semi-critical medical devices, or devices intended to be sterilized. Depending on applicability, the information may cover initial treatment at the point of use, preparation for cleaning, cleaning, disinfection, drying, inspection, packaging, sterilization, storage and transportation.

The key distinction is that ISO 17664-1 does not prescribe a single sterilization cycle for every instrument. The applicable process must come from the device's instructions and be assessed against the healthcare facility's validated processes and capabilities.

The WHO similarly describes decontamination and reprocessing as a controlled sequence of activities, from receipt and cleaning through storage and distribution. Stainless steel instruments should not all be assumed to share identical processing temperatures, chemicals or cycle limits.

6. Quick comparison: which question does each standard answer?

This is a reading guide, not an exhaustive list of applicable standards or medical device regulations.

7. Procurement checklist for reusable surgical instruments

The following checklist can be tailored to the device type, institutional process and applicable procurement rules:

• Clearly identify the manufacturer, supplier and exact product code or model.
• Confirm intended use, relevant device classification and key design specifications.
• Where quality-system certification is cited, confirm the correct legal entity, scope and validity.
• Where a technical-standard conformity claim is made, check the appropriate edition and supporting product evidence.
• Clarify material declarations, composition records or traceability documents where specialized requirements apply.
• Review IFU and processing instructions for the particular instrument being purchased.
• Establish functional inspection, maintenance and any relevant use limitations.
• Confirm warranty terms and delivery documentation against the policy for the specific product.

Note: Not every device comes with identical documentation, and not every document listed above is a mandatory legal requirement in every setting. Final requirements depend on applicable rules and the actual procurement specification.

8. Better documentation leads to better procurement decisions

Quality review should not become a competition to accumulate the largest collection of standards logos. Instead, each claim should identify the subject it concerns and the evidence that supports it. A manufacturer's quality certificate is assessed at organizational level; material and dimensional evidence relates to the product; and processing suitability depends on the IFU and facility capabilities.

ELESUN can help customers identify instruments, confirm product codes and discuss available technical, quality or material documentation according to the specific request. Final clinical selection and approval of instrument configurations remain the responsibility of the healthcare institution's qualified teams.

Explore more: ELESUN Surgical Solutions · Products · Building Surgical Instrument Sets by Clinical Workflow · Principles of Reprocessing, Cleaning, Sterilization & Storage for Reusable Surgical Instruments · Surgical Instrument Materials: Stainless Steel, Titanium & Technical Standards.

9. Frequently asked questions