Device evaluated by manufacturer: the complaint device was received for evaluation.Device analysis revealed no issues found and appears to be in good condition.The telescope assembly was able to properly pull back, advance, and retract.The unit was correctly recognized by the imaging system.Impedance testing shows a good unit wave form.During image characterization testing, a good square image appeared in the ilab system.No issues or defects were observed during product analysis of the returned device.The manufacturing batch record review confirmed that the device met all material, assembly and performance specifications.The root cause is not confirmed as there was no evidence of the alleged issue or any anomalies which could have contributed to the reported difficulty.(b)(4).
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