CJD instrument reprocessing: handling prion-risk surgical instruments

Why prions need special handling

Prions are misfolded proteins rather than living organisms. They resist heat, chemical disinfectants and radiation at levels that kill bacteria, viruses and spores. Because of this, standard disinfection and routine sterilization do not provide the same assurance for prion-contaminated instruments, and guidelines concentrate on limiting exposure in the first place.

The highest risk comes from high-infectivity tissues such as brain, spinal cord, posterior eye and associated dura or pituitary tissue, particularly in patients with known or suspected CJD or in a risk category defined by your national guidance. Infection-control teams usually triage patients and procedures before surgery, as part of a prion risk assessment.

Before and during the operation

Plan ahead where possible: use single-use instruments or dedicated sets for high-risk procedures when your policy requires it, and limit the number of instruments opened. Neurosurgical sets such as those in REDA's range include spinal punches and rongeurs, Yasargil microinstruments, aneurysm clips, suction tubes and pituitary instruments (REDA neurosurgery instruments); the hospital decides which are designated for high-risk cases, and instruments cannot be assumed to be safe for reuse.

In theatre, instruments should be kept moist from the start (not allowed to dry), and sorted into a clearly labelled, sealed container for transport. Drying fixes proteinaceous material to metal, makes later cleaning harder and increases risk.

Quarantine, cleaning and sterilization

When a patient is later identified as a CJD case, instruments used in the preceding procedures may need to be quarantined, tracked and traced, which is a strong reason to have instrument tracking systems in place. Quarantine means withholding reuse until a decision is made by the infection-control team.

For instruments to be reused, published guidance typically combines thorough cleaning with a prion-specific step. Common published approaches include prolonged pre-vacuum steam at 134 °C (often at least 18 minutes in some national guidance) after cleaning, sometimes combined with a sodium hydroxide or other approved chemical step. Requirements differ between countries and change over time, so use your national authority's current protocol. Standard cycles are described in steam sterilization temperature and time.

When to discard and what not to do

Disposal of discarded instruments and waste follows local clinical-waste rules. Staff involved should be trained and protected with the usual precautions, as covered in CSSD staffing and competencies.

• Discard instruments that cannot withstand the required treatment or that are impossible to clean (lumened items, fine joints).
• Do not use alcohol, formaldehyde or glutaraldehyde, which fix proteins and make prions harder to remove.
• Do not wash instruments from a suspected case in a shared washer before the policy step is completed.
• Do not release quarantined instruments back into circulation without sign-off.
• Do not use rigid containers for suspected-case sets unless your policy allows it; follow local guidance for packaging and disposal.

Building the protocol in your hospital

Write a procedure with infection control, neurosurgery, ophthalmology and CSSD leaders. It should define the risk assessment, who is informed, how sets are marked and quarantined, which treatment applies and who authorises release or disposal. Confirm requirements with your authority (MOHAP, DHA or DOH), as the UAE position depends on current federal and emirate guidance.

Beckfinity can advise on instrument sets and container systems for neurosurgical and ophthalmic workflows, including REDA sterilization containers; contact our specialists to talk about your needs.