When we talk about ultrasound probe safety, most of the conversation centers on cleaning and disinfection. We spend significant time thinking about cleaning agents, high-level disinfection (HLD), contact times, rinsing, drying, storage, documentation, and staff competency. All of these steps are important, but another part of the process tends to receive much less attention: taking the time to carefully inspect the probe itself.
Most ultrasound probe manufacturers include some type of inspection requirement in their Instructions for Use (IFUs), so inspection is not a new concept. Staff may be instructed to inspect the probe before use, during reprocessing, or before returning it to service. The challenge is that the directive to “inspect for cracks or damage” does not specify how to conduct a meaningful inspection. A large crack in the housing may be obvious, but early degradation, a subtle change along the edge of the acoustic lens, a small tear near a strain relief, or a change in cable flexibility can be much easier to miss.
This leaves a surprising amount of room for interpretation. Staff may know they are expected to inspect the probe without having ever been taught what early damage looks or feels like, how much wear is acceptable, or when a finding should result in the probe being removed from service. When asked, many technicians have responded that inspection is a quick visual check rather than a deliberate part of the reprocessing process.
That distinction is important because the physical condition of an ultrasound probe is connected to nearly every aspect of its safe use. Inspection can identify concerns that affect the ability to clean and disinfect the probe, as well as problems related to electrical safety, image quality, fluid ingress, probe-cover integrity, and the overall function of the device. In other words, inspection is not simply about protecting an expensive piece of equipment, but also about identifying a problem before it reaches a patient.
Probes are handled, transported, cleaned, disinfected, dried, stored, coiled, connected, and disconnected repeatedly. Depending on the device and clinical environment, they may also be exposed repeatedly to disinfectants, detergents, temperature changes, bending, cable stress, and other conditions that can contribute to wear over time. The first sign of a problem may therefore be subtle. Slight bubbling or lifting of the lens, a small separation along a seam, a hairline crack in the casing, discoloration, an abrasion, or an area of the cable that feels different from the surrounding material may be the only indication that something is changing.
Manufacturer guidance helps identify some of these areas of concern. GE HealthCare, for example, recommends examining components such as the acoustic lens, housing, cable, strain relief, connector, and the TEE probe insertion tube. They describe findings such as cuts, tears, bubbling, delamination, discoloration, abrasions, cracks, and bite holes. Philips also instructs users to carefully inspect probes and discontinue use if cracks or other damage are found. The American Institute of Ultrasound in Medicine (AIUM) emphasizes routine inspection of the transducer housing, connector, cable, and acoustic lens to maintain device integrity and performance.
The British Medical Ultrasound Society (BMUS) provides additional practical descriptions, including lens wear, bubbling, lifting, splits, cuts, abrasions, and hairline casing cracks. BMUS also raises concern about gel or fluid entering through damaged areas. These examples are useful because they help move inspection beyond simply looking for a visibly broken probe. The purpose is to recognize changes that may indicate the device is no longer in the condition for which it was designed and validated for use and reprocessing.
For infection preventionists, one of the most important reasons to pay attention to probe condition is that our reprocessing processes assume we are working with an intact medical device. We follow validated cleaning and disinfection instructions, use compatible products, meet the required contact times, and complete the other steps specified by the manufacturers to provide reasonable assurance that the device will be safe for the next patient. The condition of the surface being cleaned and disinfected is part of that equation.
When cracks, separations, tears, delamination, or other surface defects develop, soil, gel, moisture, bioburden, or chemical residue may collect in areas not designed to be exposed. Surface irregularities may also create areas that are more difficult to clean. This becomes particularly concerning with semi-critical probes that contact mucous membranes and undergo HLD between patients because the effectiveness of the overall process depends on the successful completion of the steps that precede disinfection, specifically cleaning.
This is why inspection should not be considered separate from reprocessing. Examining the probe's condition helps determine whether the device in front of us remains appropriate to proceed with that process and return to patient use. Completing all expected cleaning and HLD steps provides less reassurance if the device's physical integrity has been compromised in a way that affects its ability to be safely reprocessed.
Probe inspection can be viewed primarily as a Biomedical Engineering or equipment-maintenance responsibility, but the implications of damage span several areas of patient safety. Infection Prevention may be concerned with the ability to clean and disinfect a damaged surface, while Clinical Engineering may focus on electrical or mechanical integrity. A sonographer may first notice a problem when image quality changes, and staff working with TEE probes may have additional concerns about the insertion tube, electrical integrity, or evidence of fluid ingress.
From the patient's perspective, those organizational distinctions do not matter. The same probe is being used for their examination or procedure, and its physical condition can potentially affect several aspects of that care. Damage involving the acoustic lens may affect image quality and diagnostic confidence. Problems with cables, strain reliefs, or other components may cause functional or electrical issues. Surface defects may affect cleaning and disinfection, while deterioration in areas that come into contact with a probe cover or sheath may create additional concerns during use.
Thinking about inspection this way changes its role within the healthcare organization. It is no longer simply a maintenance activity intended to extend the life of an expensive device. It becomes part of a broader patient-safety process in which multiple disciplines are interested in recognizing changes before the probe is used again.
The reality of the clinical environment also needs to be considered. A sonographer with a full schedule may be trying to keep examinations moving throughout the day. In the emergency department, staff may be focused on obtaining imaging quickly enough to guide an urgent clinical decision. Procedural areas manage patient turnover and numerous responsibilities, while staff responsible for reprocessing may handle several devices at the same time. None of these situations means that staff are unconcerned about probe condition, but they do create an environment in which inspection can easily become abbreviated.
Education & competency are another important part of the problem. It is difficult to expect someone to recognize early delamination if they have never seen it. A staff member may notice discoloration but have no idea whether it represents normal aging, chemical damage, or something else entirely. Someone may notice a change in a cable's flexibility but assume it is insignificant because the cable is not visibly broken.
Even when staff identify something unusual, they may not know what should happen next. Facilities need to consider who should be contacted, who has the authority to remove a probe from service, how questionable findings are evaluated, and how those decisions are documented. There also needs to be recognition that removing a probe from service can affect workflow, particularly in areas with limited equipment. If those practical issues have not been addressed, staff may be left making safety decisions on their own.
A stronger inspection process begins with the manufacturer's IFU, but facilities may need to translate those instructions into education that staff can actually use. That can include identifying the specific parts of each probe to examine and providing visual examples of normal wear and concerning findings. Depending on the probe and manufacturer guidance, inspection may include the acoustic lens, seams and bonding areas, housing, cable, strain reliefs, connectors, and probe-specific components such as the insertion tube of a TEE probe.
The physical environment matters as well. Adequate lighting is necessary for staff to identify subtle surface changes, and magnification may be useful when appropriate. More importantly, staff should understand what they are looking for and what they should do when they find it. Education about bubbling, lifting, delamination, cuts, tears, abrasions, discoloration, stiffness, brittleness, and other signs of deterioration can make the instruction to “inspect the probe” much more meaningful.
Inspection is also something I would include when observing reprocessing competency. Rather than simply verifying that a competency form contains an inspection step, ask the person performing the process to demonstrate how they inspect the probe and explain what they are looking for. Asking what they would do if they found something questionable can also help determine whether there is a clear escalation pathway or whether the staff member would be left to make that decision independently.
The culture surrounding equipment concerns also matters. Staff should feel comfortable reporting questionable findings and removing a probe from use when appropriate without worrying that they will be blamed for damaging an expensive device or criticized for disrupting the schedule. A person who notices an early change in a probe and speaks up may be identifying a problem long before it becomes obvious to everyone else. These early findings should be celebrated!
The value of inspection can become even more apparent when a facility is investigating a possible reprocessing failure or healthcare-associated infection. During these investigations, Infection Prevention often works backward through the reprocessing process to understand what occurred. We may review whether the correct cleaning product was used, whether HLD was completed, whether required parameters were met, who performed the process, and which patients may have been exposed. The device's physical condition should be part of that review. If a probe is subsequently found to have a crack, delamination, microtear, surface defect, or evidence of fluid ingress, the investigation may need to consider how long the damage could have been present and whether it might have affected cleaning or disinfection. Previous inspection findings and maintenance records may be important, particularly when determining when the probe's condition changed.
This is also where inspection and traceability begin to overlap. If a facility can identify which probe was used for a patient, when that probe was reprocessed, and whether concerns about its condition had previously been documented, the investigation becomes much more focused. Without that information, determining the potential scope of exposure may be considerably more difficult. Regular inspection, therefore, contributes not only to identifying an unsafe device before its next use but also to the facility's ability to understand what happened if a concern is discovered later.
Manufacturers have consistently included inspection in their recommendations, and professional organizations such as AIUM and BMUS reinforce the importance of maintaining device integrity. The opportunity for healthcare facilities is to make those recommendations more meaningful at the point of inspection. Staff need sufficient education to recognize early deterioration, clear guidance on what to do when they identify a concern, and a process that links inspection findings to reprocessing, maintenance, and patient safety.
For infection preventionists, probe inspection can also become a valuable part of rounding. Along with observing cleaning and HLD practices, reviewing documentation, and talking with staff about competency, take time to look at the probes themselves. Ask staff to demonstrate how they inspect them and explain what they would do if something did not look or feel right. Those conversations may reveal gaps that would never be apparent from reviewing a policy.
There is a great deal of attention placed on making an ultrasound probe safe for the next patient. We clean it, disinfect it, rinse and dry it when required, store it appropriately, document the process, and train staff to perform those steps correctly. Inspection belongs within that same conversation, because each of those processes depends, to some degree, on the integrity of the device being reprocessed. When inspection is performed thoughtfully and consistently, it provides another opportunity to recognize a problem before that probe reaches the next patient and becomes an important, though sometimes overlooked, part of protecting patients throughout the ultrasound workflow.
