People who buy second-hand probes tend to describe the experience the same way: a gamble. Not because used probes are bad — plenty are fine — but because the two things that decide whether this one is fine are the two things you cannot see. How old is it, and what is actually inside it?
This page is a buyer’s checklist. It applies whether you are buying from a dealer, from a hospital clearing stock, or from a listing that seems too cheap.
The housing tells you nothing
Start here, because it is the assumption that costs people money. A probe in an original manufacturer’s housing, with original markings, can contain a replacement scan head, a spliced cable, salvaged crystals, or parts from a probe that is not the model on the label.
That is not automatically bad — a well-executed scan head replacement is a legitimate repair, and we do them. What is bad is not knowing. The failure mode behind most bad second-hand probe stories is not a fake probe; it is a repaired probe sold as an untouched one, with the repair’s own remaining lifespan quietly transferred to the buyer.
Five questions to ask the seller
- Has this probe been repaired? By whom, and what was replaced? A “no” that turns out to be a “yes” tells you what the rest of the answers are worth.
- What is the element count right now? Not “it images fine” — a number. A seller who has tested the probe knows this. One who has not, has not tested it.
- What system was it tested on? A probe verified on a matching live system is a different claim from one that passed a continuity check on a bench.
- How old is it, and where did it come from? Probes from a high-throughput cardiology department have had a different life from probes from a small clinic.
- What happens if it fails in the first month? Ask before, not after.
You are not being difficult. These are the same four evidence questions we hold our own repairs to.
What to check yourself, on arrival
Do this before the return window closes, not before the first clinical use.
- Element count on your own system. Scan a phantom at depth with gain compensation off. Count the dropout. This is your baseline for everything afterwards.
- Flex the cable end to end while scanning. Intermittent conductors are the most common hidden fault in used probes, and they are invisible in a static test.
- Inspect the strain relief boots at both ends. A replaced boot on an otherwise original probe means the cable has already been worked on.
- Look at the lens face under raking light. Fine scratching, a soft spot, or a subtle step at the lens edge are early delamination.
- Check the connector pins for straightness, for plating wear, and for the polished look that comes from thousands of insertion cycles.
- For TEE and endocavity probes, leak test before anything else. No exceptions. A used TEE probe with no leak test result is not a bargain.
Where used probes come from, and why it matters
Second-hand probes reach the market by four routes, and the route determines how much you should trust the listing.
Department clearance. A hospital replaces a system and sells the probes with it. These tend to be honestly described because the seller has no repair business to protect — but they are also usually untested, because the department has no reason to test something it is disposing of.
Dealer refurbishment. A trader buys probes in bulk, repairs the economic ones and lists them. Quality varies enormously by dealer, and the differentiator is documentation. Ask what was replaced. A dealer who repairs well is happy to tell you; one who cannot answer has either not done the work or would rather you did not know what was done.
Insurance and write-off stock. Probes from damaged systems. Sometimes genuinely fine — the probe was not what got damaged — and sometimes carrying impact damage that is not visible.
Unknown-origin listings. The cheapest tier, and the one where counterfeit internals actually show up. A probe whose seller cannot say where it came from is a probe whose history begins the day it arrives at your dock.
The arithmetic people get wrong
A used probe at half the price of a repair looks like the better deal until you put the two things next to each other properly.
A repair has a known scope: you know which subassembly is new, and therefore which one is old and will fail next. A used probe has an unknown scope on every subassembly. If it arrives with 12 dead elements and a cable that has already been re-terminated once, you have bought someone else’s next repair at a discount.
The other half of the arithmetic is the host system. Buying a used probe for a machine approaching end of support commits you to a platform that is running out of parts. That factor changes the answer more often than price does.
If the probe you bought turns out to be faulty
Send us the images before you send the probe. We will tell you what we think is wrong and whether it is repairable — and if it is not, we will tell you not to ship it. That assessment is free, and it is more useful in this situation than in almost any other, because a used probe with an unknown history is exactly the case where a repair estimate and a resale value are hard to weigh against each other.
Frequently asked questions
Is a refurbished probe from a dealer safer than one from a hospital?
Not inherently. What makes it safer is documentation — element counts, what was replaced, what it was tested on. A dealer who provides that is safer than one who does not, regardless of who sold it to them.
How many dead elements is acceptable in a used probe?
That is a clinical judgement for your application, but treat any undisclosed dropout as a disclosure problem rather than a performance one. A seller who did not mention it either did not test, or did.
Can you tell from photographs whether a probe has been repaired?
Often, yes — replaced boots, a non-original housing seam, tool marks around the lens edge and mismatched connector hardware are all visible. It is not conclusive, but it is a reasonable first filter before money moves.