Why should cartridge needles never be manually sterilized after use?

• A. They are too expensive to reuse.
• B. They are single-use and not designed for re-sterilization; re-sterilizing can contaminate and compromise sterility.
• C. Re-sterilization dulls the needle.
• D. Re-sterilization makes them unsafe.

Answer: (B)

cartridge needles are manufactured as single-use, sterile components that come sealed to protect clients. Once they’ve been used, the sterile barrier is broken, and reprocessing them with manual methods can’t guarantees sterility. The reprocessing steps needed to fully sterilize complex needle assemblies aren’t reliable when done outside a validated system, and residual biological material or damage to the cartridge’s seals and housing can occur. This means there’s a real risk of contaminating the next client or failing to achieve true sterility, which is why these needles are disposed after one use rather than re-sterilized.