Auto-Injector usability study: how many testers does it take to spot the flaws?
NCT ID NCT03808246
First seen Apr 26, 2026 · Last updated Jun 20, 2026 · Updated 9 times
Summary
This study looked at how many people are needed to find usability errors in the Zeneo® auto-injector pen, a device used for severe allergic reactions. 60 healthy volunteers used a demo version during a simulated anaphylactic shock. The goal was to improve device design by catching mistakes before real patients use it.
Disclaimer
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This is a summary of
the original study
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Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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Contacts and locations
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Locations
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Usability Lab of CIC IT 1403
Lille, Haut de France, 59037, France
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
What this could lead to
If successful, this could help manufacturers design better medical devices by knowing how many testers are needed to catch most user errors.
What could go wrong
This is a small, completed study in healthy volunteers, not patients. The results may not apply to real-life emergencies or to people with allergies.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.