Combination product: yes.The returned instrument was subjected to a technical analysis and the corresponding production documentation was reviewed to establish whether a deviation from the manufacturing process could be the cause for the reported event.The technical investigation revealed that the balloon has been inflated.The balloon was deflated in the as-returned state, but dried contrast medium residue was observed in the balloon- and inflation lumen.The hypotube shows several mild kinks which may have contributed to the complaint event.Microscopic inspection of the instrument revealed no other damage or irregularity.Functional testing was successfully performed, i.E.The balloon could be inflated and fully deflated.Review of the production documentation confirmed that the instrument was manufactured according to specifications and passed all in-process and final inspections.Based on the conducted investigations, no manufacturing or material related root cause could be determined.
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