Disinfection, Sterilization, And Reuse Maintenance Of Trocar Needles

Infection Control and Instrument Lifecycle Management

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For medical institutions, managing reusable trocar needles is a systematic project directly related to medical quality and patient safety. Proper disinfection and sterilization protocols not only eradicate potential pathogenic microorganisms but also effectively extend the instrument's service life, achieving a win-win situation for economic and social benefits.

The first step is immediate post-operative pre-treatment. After surgery, instruments are often coated with blood, tissue fluids, and eschar from electrocautery. If these substances dry on the instrument surface, they significantly increase the difficulty of subsequent cleaning. Therefore, operating room nurses should promptly rinse the trocar needle with enzymatic cleaning solution immediately after the instrument is removed from the body, or soak it in a moisturizing agent to prevent contaminants from solidifying.

The second step is thorough cleaning and decontamination-the most critical link. Staff must completely disassemble the obturator, cannula, sealing rings, and other components. Since the cannula interior is hollow, ordinary rinsing cannot reach deep areas; it is necessary to use specialized pipe brushes配合 high-pressure water guns for scrubbing, or place them in multi-tank ultrasonic cleaning machines for oscillation cleaning. After cleaning, visual inspection under magnification is required to ensure no visible residues remain.

The third step is selecting the appropriate sterilization method. For metal components that can withstand high temperatures and pressures, pre-vacuum steam sterilization is the first choice, typically set at 132°C to 134°C for no less than 4 minutes. This method provides reliable sterilization with minimal instrument damage. However, it must be noted that if the trocar needle includes plastic sealing rings or valves, their temperature tolerance must be confirmed; otherwise, ethylene oxide (EO) sterilization or low-temperature plasma sterilization must be chosen. Merely soaking in disinfectant can never replace sterilization, as soaking cannot kill all spores and viruses.

The fourth step is daily maintenance and scrap determination. Before each use, operators should carefully inspect whether the obturator tip has become dull, rolled, or chipped. Once the edge is found to be no longer sharp, it should be taken out of service immediately and sent for repair or replacement, as a dull needle forces the surgeon to apply greater puncture force, easily leading to accidental injury. At the same time, check whether the sealing rings have aged and lost elasticity, and whether the cannula has any cracks. Establishing a comprehensive instrument file recording every use, cleaning, and maintenance instance is an important safeguard for infection control safety.