The “Elevator” — the Design Flaw at the Heart of These Cases

If you read enough about the Olympus duodenoscope cases, one word keeps surfacing: the elevator. It sounds like a minor engineering detail. It is not. The elevator is the single feature that makes a duodenoscope both uniquely useful and uniquely dangerous, and it is at the center of almost every infection lawsuit involving these devices. This is a plain-English walk through what the elevator is, why it defeats ordinary cleaning, and why that specific part — not the whole scope in the abstract — is what a product-liability case tends to turn on.

What the Elevator Is and What It Does

A duodenoscope is a long, flexible tube that a physician passes through the mouth, down the esophagus and stomach, to the top of the small intestine. It is the workhorse of ERCP — endoscopic retrograde cholangiopancreatography — the procedure used to clear bile-duct stones, place stents, and diagnose problems in the bile and pancreatic ducts. Unlike a colonoscope or a standard upper endoscope, a duodenoscope has to send instruments sideways, into duct openings that sit at an angle to the scope’s path.

That is the elevator’s job. The elevator is a small hinged lever mounted at the very tip of the scope, controlled by a wire that runs the length of the device up to the handle. When the physician turns a dial, the elevator raises or lowers, changing the angle at which a catheter or guidewire exits the scope so it can be steered precisely into a duct. Nothing else on the device performs this function, and ERCP as we know it would not be possible without it. The elevator is not a flaw in the sense of being a mistake — it is essential. The problem is what it does after the procedure is over.

Why a Moving Part at the Tip Is a Cleaning Nightmare

Every feature that makes the elevator work also makes it hard to clean. Because it moves, it needs hinges, a pivot, and a channel for the control wire. Because it sits at the tip, it is bathed directly in bile, blood, tissue, and intestinal fluid during the procedure. And because it is mechanically complex, it is surrounded by narrow recesses and gaps — microscopic crevices where that organic debris collects and where a cleaning brush simply cannot reach.

On the older “fixed-endcap” designs, the cap covering the elevator recess was sealed to the scope and could not be removed. That meant the single dirtiest part of the device could never be fully opened up, inspected, and scrubbed. Reprocessing staff were asked to clean a sealed cavity they could not see into. As one line of the public record puts it, contamination on these scopes was not simply a matter of someone doing a bad job — it was a limitation built into the design itself.

Biofilm: Why “Almost Clean” Isn’t Clean

There is a second, harder layer to the problem. When bacteria are left behind in the elevator recess, they do not sit there passively waiting to be washed out on the next cycle. Given moisture and time, they form a biofilm — a structured colony that anchors to the surface and secretes a protective slime matrix around itself. Once a biofilm establishes, the standard chemical step used between patients — high-level disinfection — struggles to penetrate it. The disinfectant reaches the surface of the film, but the organisms sheltered underneath can survive to contaminate the next patient.

The numbers from peer-reviewed sampling are sobering. A study of bacterial bioburden on the duodenoscope elevator, published in the American Journal of Infection Control, measured peak contamination on the elevator and its recess on the order of hundreds of millions of colony-forming units per piece after clinical use — a bacterial load concentrated precisely where cleaning is weakest. That is the mechanism behind a finding many patients discover with disbelief: a scope can be run through the full, correct cleaning process and still come out carrying dangerous organisms.

The Reprocessing Steps — and Where the Elevator Defeats Each One

Between patients, a duodenoscope is supposed to go through a multi-step cleaning sequence called reprocessing. It generally runs like this, and the elevator is a weak point at nearly every stage:

• Bedside pre-cleaning: wiping and flushing the scope immediately after the procedure so debris doesn’t dry. Debris packed into the elevator recess is the least likely to be reached.
• Leak testing and manual cleaning: brushing channels and flushing with detergent. Brushes are designed for straight channels, not the hinged, angled geometry around the elevator.
• High-level disinfection: soaking in a chemical agent, often in an automated endoscope reprocessor. If biofilm has formed in the recess, the chemical cannot fully reach the sheltered organisms.
• Drying and storage: residual moisture in the recess is exactly what remaining bacteria need to regrow before the next use.

This is why the FDA has repeatedly emphasized that these infections occurred even when hospitals followed the manufacturer’s cleaning instructions. The failure point was not a lazy technician; it was a part that the instructions could not actually clean. The agency’s own post-market surveillance found that roughly 1 in 20 properly reprocessed duodenoscopes still tested positive for high-concern organisms — a rate we break down in our explainer on the FDA’s 1-in-20 contamination finding.

How the Manufacturers Tried to Fix the Elevator

The clearest proof that the elevator was the problem is that the industry kept redesigning it. Over roughly a decade, the fixes came in escalating steps: a sealed elevator meant to keep fluid out of the recess; a removable, disposable endcap so the recess could finally be exposed; a disposable elevator component that is thrown away rather than cleaned; and, ultimately, a fully single-use duodenoscope that is never reprocessed at all. On August 29, 2019, the FDA recommended that hospitals and manufacturers begin transitioning away from fixed-endcap scopes toward these newer designs, and in December 2019 it cleared the first fully single-use duodenoscope.

Each of those redesigns is an admission, in engineering form, that the previous elevator could not be cleaned reliably. That is why a patient’s scope model matters so much: an older Olympus TJF-Q180V with a fixed sealing design tells a very different story than a later model built with a disposable endcap. Our guide on identifying the TJF-Q180V versus the TJF-Q190V explains how to read that model number, and our piece on single-use duodenoscopes as a safer alternative covers why a feasible safer design carries legal weight.

Why the Elevator Is the Hinge of Two Different Legal Claims

The elevator is not just a medical detail. It is where the two main legal theories in these cases meet — and where they divide. A single contaminated procedure can support a claim against the manufacturer, a claim against the hospital, or both, and the elevator is central to telling them apart.

Against the manufacturer, the theory is design defect. Courts generally apply a risk-utility test, drawn from the framework in the Restatement (Third) of Torts: Products Liability § 2(b): a product is defective in design when its foreseeable risks could have been reduced by a reasonable alternative design, and the failure to adopt that design left the product not reasonably safe. The elevator is Exhibit A — the redesigns above show a safer alternative was feasible and was eventually adopted. Against the hospital, the theory is reprocessing negligence: a facility that failed to follow even the imperfect cleaning instructions, or that kept running fixed-endcap scopes long after safer options existed, may carry its own separate exposure. Our overview of Olympus endoscope design defects maps how these theories fit the specific models.

A Trial Lawyer’s Read on the Elevator

“When you can point a jury to one part and say ‘this is where the bacteria hide, and the company knew it,’ the case stops being abstract,” says Alex Alvarez, Managing Partner of The Alvarez Law Firm and a Board Certified Civil Trial Lawyer. “The elevator lets us tell a simple, true story: the feature that makes the scope work is the same feature that couldn’t be cleaned, and safer versions existed. That’s the spine of a design-defect claim. It doesn’t win any single case on its own — you still have to prove this device infected this patient — but it frames everything.”

The medical records are where the part connects to the person. “I look at which model was used, whether it had a fixed or a removable endcap, what organism grew in the cultures, and how the reprocessing was documented,” notes Herb Borroto, M.D., J.D., the firm’s Medical-Legal Expert, who holds both a medical degree and a law degree. “If a culture grows a carbapenem-resistant organism after an ERCP on a fixed-endcap scope, and the reprocessing logs show the recommended cycle was run, that combination points straight at the elevator. The chart is what turns a general design problem into this patient’s specific injury.”

What This Means If You Were Infected After an ERCP

If you or a loved one developed a serious infection after an ERCP or other duodenoscope procedure, the elevator is the reason the timing and the device details matter so much. The single most useful early step is preserving the evidence — the scope’s make and model, its reprocessing logs, and your culture results — before routine record-retention schedules erase it. Our guide on requesting and preserving hospital records after a scope infection walks through exactly what to ask for and how.

From there, a prompt, no-obligation review with a lawyer who handles these cases can tell you whether your facts fit the pattern and whether a filing deadline may be approaching. We represent patients nationwide.

Free case review. No Fees Unless We Recover Money for You.

Frequently Asked Questions

What is the elevator on a duodenoscope?

The elevator is a tiny hinged lever at the very tip of a duodenoscope. During an ERCP, the physician raises and lowers it to angle catheters, guidewires, and other instruments sideways into the bile and pancreatic ducts. It is what makes the procedure possible — but it is also a moving part surrounded by narrow recesses and a wire channel, and those crevices are the hardest part of the entire device to clean.

Why is the duodenoscope elevator so hard to clean?

The elevator moves, so it has hinges, gaps, and a wire channel that trap tissue, fluid, and bacteria in spaces a cleaning brush cannot reliably reach. On older fixed-endcap designs those recesses could not be fully opened for cleaning at all. When bacteria are left behind, they can form a biofilm — a protective layer that ordinary high-level disinfection struggles to penetrate. That is why the FDA has reported that duodenoscopes tested positive for bacteria even after hospitals followed the manufacturer’s cleaning instructions exactly.

Is the duodenoscope elevator mechanism considered a design defect?

Whether any particular scope was defective is decided case by case, but the elevator is the feature at the center of the design-defect theory in these cases. The argument is that the fixed-endcap elevator design made reliable cleaning between patients effectively impossible, that the manufacturer knew this, and that safer designs — a sealed elevator, a disposable endcap, a disposable elevator, and eventually a fully single-use scope — existed and were later cleared by the FDA. Courts applying a risk-utility test ask whether a reasonable alternative design existed; in the scope cases much of that record is already documented.

If my scope had a sealed or disposable elevator, do I still have a case?

Possibly. Newer sealed and disposable-endcap designs were meant to reduce the contamination risk, but infections have still been reported with later models, and reprocessing can still be performed incorrectly regardless of design. A claim depends on your specific facts — the scope model used, the organism cultured, how the device was cleaned, and your state’s filing deadline — not on the elevator design alone. No outcome is promised or guaranteed, and past results do not predict future ones.

Sources

• U.S. Food & Drug Administration — “Infections Associated with Reprocessed Duodenoscopes” (design of the elevator mechanism; persistent contamination after correct reprocessing). fda.gov
• U.S. Food & Drug Administration — “FDA recommends health care facilities and manufacturers begin transitioning to duodenoscopes with disposable components” (August 29, 2019). fda.gov
• U.S. Food & Drug Administration — Duodenoscope surveillance sampling and culturing (Section 522 post-market studies; up to roughly 5% of properly reprocessed scopes positive for high-concern organisms). fda.gov
• American Journal of Infection Control — “Bacterial bioburden of duodenoscope elevator mechanism in different reprocessing stages” (peak contamination of the elevator and recess measured in the hundreds of millions of CFU per piece after clinical use). ajicjournal.org
• American Law Institute — Restatement (Third) of Torts: Products Liability § 2(b) (reasonable alternative design / risk-utility test). ali.org

This article is for general informational purposes only and is not legal advice. It summarizes public regulatory findings and peer-reviewed medical literature about a medical device’s design; it does not describe the outcome of any client’s case. Nothing here creates an attorney-client relationship, and no result is promised or implied. Past results do not guarantee future outcomes. Deadlines and legal standards vary by state and by the facts of each case. If you believe you may have a claim, consult a licensed attorney promptly.