GETTYIMAGES/VLAD_KARAVAEV Every surgical instrument in the veterinary clinic has a similar journey–it leaves its sterile tray and ends only when it is carefully cleaned, inspected, and sterilized for the next procedure. The life of each instrument does not end when surgery is over. Blood, tissue, and bodily fluids cling to surfaces, creating a hidden threat that, if neglected, can compromise patient safety and recovery. We tend to assume running instruments through an autoclave is generally enough to guarantee sterility. In fact, we often take that for granted. Sterilization is only effective when instruments are properly cleaned, handled, and wrapped. Any debris left on hinges, serrations, or lumens can block steam penetration, reduce the instrument’s lifespan, and even increase the risk of surgical site infections. Studies have shown inadequate instrument cleaning and processing are a leading, yet preventable, cause of post-operative complications in many veterinary patients. Let’s examine the journey of a surgical instrument, the challenges it faces, the common mistakes that put it at risk, and the evidence-based cleaning and sterilization protocols that ensure it remains safe, functional, and ready to serve the next patient. Understanding this process is not just good practice, it is about protecting our patients, improving surgical outcomes, and maintaining professional standards. The cast of characters: Veterinary surgical instruments Surgical instruments are far from uniform. Each one is designed with a specific purpose, shape, and material that influences how it must be cleaned, handled, and sterilized. Because of these differences, a single “wash and autoclave” approach is not enough. Cutting instruments, such as scalpel handles, blades, and surgical scissors, rely on precise, sharp edges to function effectively. Minor corrosion, pitting, and residue can dull their edges and compromise surgical precision. Grasping and holding instruments, such as forceps, hemostats, and needle holders, often contain serrated tips, box locks, and ratchets that easily trap blood and tissue. When debris is allowed to dry in these areas, it can lead to corrosion, stiffness, and eventual failure of the instrument. Retracting instruments have fewer moving parts but have broad surfaces, where organic material can attach. Suction tips and instruments with lumens pose a different challenge: internal components that are difficult to visualize and must be flushed thoroughly to prevent hidden contamination. Specialized tools, such as those used in microsurgery or minimally invasive procedures, are often more delicate and require gentler handling and closer inspection. We also must consider what the instruments are made of. Stainless steel, tungsten, and coated instruments will respond differently to detergents, water quality, and handling methods. Recognizing the design and vulnerabilities of each instrument type allows a more appropriate, tailored cleaning protocol. (See Table 1) Table 1 Instrument type Cleaning challenge Consequence Appropriate cleaning Scissors/scalpel handles Residue on cutting edges Dulling, corrosion Gentle scrubbing, thorough drying Hemostats/ Needle holders Debris in box locks, ratchets Stiffness, rust, sterilization failure Open hinges, brush joints thoroughly Forceps Serrations trap tissue Pitting Attention to tips Retractors Broad surfaces hold debris Residue left after washing Full surface cleaning and rinse Suction tips/ Lumened tools Hidden internal debris Blockage, contamination Thorough flushing and ultrasonic cleaning The hidden threat: Common mistakes in instrument care Veterinary teams are committed to maintaining a clean surgical environment, but many instrument problems result from incorrect habits. These habits, repeated day after day, shorten the life of instruments and increase the risk to patients. One of the most common errors occurs when dirty instruments are set aside and allowed to dry. The blood and tissue proteins adhere tightly to metal surfaces and become difficult to remove. This dried debris can remain lodged in serrations, hinges, and box locks even after washing, creating an ideal environment for corrosion and bacteria formation. The cleaning tools and solution we use can also damage the instruments. Abrasive brushes and harsh detergents can scratch protective finishes and promote pitting. Tap water can also pose a threat by leaving mineral deposits on instruments. Over time, this can lead to staining and corrosion. Towels used to dry instruments can leave lint and fibers clinging to surfaces, impeding sterilization. When we package instruments for sterilization, we tend to close ratchets, pack tightly, and stack things inside the autoclave. This can prevent steam from contacting all surfaces of the instruments, thus reducing sterilization effectiveness. The autoclave will function properly, but our instruments inside may not actually be sterile. Instrument damage and issues are rarely obvious. They often appear gradually as stiff joints, rust spots, dull cutting edges, and unexplained post-operative infections in our patients. Recognizing and correcting these habits is essential. The science behind cleaning and sterilization Effective instrument processing is a science, not a routine. Organic material–blood, fat, tissue– does not rinse away easily with water alone. Because of this, enzymatic cleaners are essential. These cleaners break down particles that can be safely removed from instrument surfaces. Skipping this step will result in debris remaining lodged in serrations, hinges, and lumens even after scrubbing. Manual cleaning with soft brushes is important, especially with box locks, ratchets, and serrated tips. For complex instruments, ultrasonic cleaners provide an additional level of effectiveness. These ultrasonic units use high-frequency sound waves to dislodge debris from areas that brushes cannot reach. Rinsing is more important than many realize. As mentioned, tap water often contains minerals that will deposit onto instruments. Over time, these minerals contribute to staining and corrosion. Using distilled or deionized water will help prevent mineral buildup and detergent residues. Thorough drying is equally important. Any moisture left on instruments promotes corrosion and provides an environment for microorganisms. After drying, it is recommended to apply a water-soluble lubricant, often called “instrument milk,” to protect moving parts. Only after these steps are completed does sterilization become effective. Autoclaves rely on steam under pressure to destroy microorganisms, but that steam must contact every surface. Sterilization does not clean instruments; it only works when cleaning has already been done correctly. The step-by-step cleaning protocol A consistent approach to cleaning is key to preventing damage, avoiding sterilization failure, and protecting your patients. The following is a step-by-step guide that serves as best practices in any surgical setting. Point of use care Instrument care should begin the moment surgery ends. Any debris should be removed immediately. It is ideal to keep instruments moist until they can be properly cleaned. A quick rinse in cool water is ideal. Avoid hot water, as it can cause debris to adhere more tightly to the metal surfaces. Enzymatic pre-soak Submerge instruments in distilled water with an enzymatic cleaner according to the manufacturer’s dilution and time recommendations. This step allows enzymes to start breaking down the organic material before manual cleaning. Tap water can contribute to staining and rust formation, and should not be used. Manual cleaning Using a soft brush, scrub each instrument, paying special attention to hinges, serrations, ratchets, and box locks. Lumened instruments must be flushed thoroughly. Never use abrasive brushes or steel wool, as they can damage protective finishes and promote corrosion. Ultrasonic cleaning (when available) Ultrasonic cleaners are especially useful for complex instruments. Instruments should be fully submerged, opened, and not overcrowded to allow cavitation to reach all surfaces. Rinsing Rinse instruments thoroughly with distilled or deionized water to remove all detergent residue and mineral contaminants. Drying Instruments must be completely dried. Compressed air or lint-free towels can be used. Any moisture left behind can lead to corrosion and interfere with sterilization. Lubrication Apply a water-soluble instrument lubricant to hinged instruments to maintain smooth movement and function. Inspection Each instrument should be inspected for cleanliness, alignment, sharpness, cracks, rust, or pitting. Any damaged instruments should not be used. Packaging for sterilization Hinged instruments should be placed in packs in the open position. Packs should not be overloaded, and sterilization indicators should be included. Autoclaving Follow the manufacturer’s guidelines for cycle type, temperature, and load configuration. Proper loading ensures steam can circulate freely and make contact with all surfaces of the instruments. BIALO-ZIELONY. (2022). HEGAR. WIKIMEDIA COMMONS. HTTPS://COMMONS.WIKIMEDIA.ORG/WIKI/FILE:IG%C5%82OTRZYMACZ_HEGAR.JPG Special considerations for advanced and delicate instruments Some surgical instruments require a higher level of attention due to their design, materials, and precision. Microsurgical instruments, for example, have delicate tips that are easily bent or misaligned and should be cleaned with soft brushes and inspected under magnification. Tungsten carbide inserts found in many needle holders and scissors provide durability but can be damaged by abrasive cleaning or harsh detergents. Cutting instruments also require routine function checks after cleaning to ensure proper alignment and sharpness, as dull or misaligned edges can lead to tissue trauma and decreased efficiency. Lumened instruments, including suction tips, laparoscopic ports, and endoscopic tools, pose an additional challenge because their internal channels are difficult to visualize. These instruments must be flushed thoroughly with enzymatic cleaner and rinsed carefully to prevent hidden debris, blockages, and biofilm. These examples reinforce that instrument care is not a one-size-fits-all process. Tailoring cleaning, handling, and inspection techniques to each instrument type is essential. DREAMSTIME/© TEERADEJ SRIKIJVILAIKUL The bigger picture: Patient safety and practice efficiency Proper instrument care reaches beyond extending the lifespan of your surgical instruments. Effective instrument processing is an essential component of infection control and patient safety. Surgical site infections, delayed healing, and post-operative complications can often be traced back to breakdowns in cleaning and sterilization practices rather than surgical mishaps. When instruments are meticulously cleaned, inspected, and prepared for sterilization, we can greatly reduce these risks and create a safer surgical environment for every patient. Proper instrument care also improves overall practice efficiency. Well-maintained instruments function as they should and decrease the need for costly replacements. Establishing consistent cleaning protocols encourages accountability and teamwork among veterinary staff, reinforcing that instrument processing is a skilled responsibility rather than a routine task. Conclusion At the end of each procedure, a surgical instrument’s work is not over. The journey continues through cleaning, inspection, packaging, and sterilization before it is ready to serve the next patient. Every step in the process determines whether that instrument remains a reliable asset in the surgical suite or a hidden source of risk. Understanding the life of a surgical instrument encourages veterinary teams to approach instrument processing as a critical component of patient care. When instruments are handled with intention and cleaned by utilizing a proven protocol, they perform better, last longer, and contribute to safer outcomes for patients. This process reflects a commitment to excellence – protecting patients, supporting surgical success, and upholding the professional standards of veterinary medicine. Jamie Morgan, MAEd, CVT, RVT, CPEP, FFCP, is a veterinary technologist certified in both Illinois and North Carolina. She has more than 19 years of teaching experience in AVMA-accredited veterinary technology programs.
