The device was discarded at the hospital.
Therefore no technical investigation on the subject could be performed.
Review of the production documentation verified that the instrument was manufactured according to specifications and fulfilled all the requirements of in-process and final inspections.
The provided angiographic material was reviewed but does not provide any additional information on the complaint event.
The need to remove the protective sleeve prior to use, which is quite different in material and stiffness compared to the balloon itself, is a standard procedure for balloon catheters and mentioned in the related instruction for use.
Based on the conducted investigations no material or manufacturing related root cause could be determined.
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