(b)(4).Device evaluated by mfr.: a dispenser hoop, introducer sheath and pusher wire were returned.During visual inspection, the ss coil region of the pusher wire was noted to be protruding from the introducer sheath.The pusher wire was kinked distally.No damage was observed to the introducer sheath.No coil was returned.A further microscopic inspection noted the interlocking arm of the pusher wire to have no damage.The dimensions that could be measured were found to be in specification.The manufacturing batch record review confirmed that the device met all material, assembly and performance specifications.The most probable root cause is considered handling damage as the event occurred without direct patient contact.(b)(4).
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