(b)(4).Eleven (11) cartridges of catalog number 002200 horizon ti med 6/cart 180/box were received not used, closed in original package, lot # 73b1500389 was confirmed with samples received, during visual inspection the cartridges are in good condition; all clips loaded properly in slots, in addition, two clips were received inside a container; clips closed.Failure mode clip slipped off vessel was confirmed with two clips (clips closed) during visual inspection.One cartridge was opened to perform a functional inspection; the testing was performed: the 4 horizon clips were loaded properly into the applier p/n 237081, batch # 06c1144840.The 4 horizon clips were released properly and no quality issues were found during inspection, then, the 4 horizon clips closed were reviewed under a microscope; clips in good condition, the 4 horizon clips were compared with the two clips received closed and it was observed the two clips are not closed completely.Based on the visual inspection of the samples "clip slipped off vessel" reported by customer was confirmed; with two closed clips, additional testing was performed to determine the root cause of failure mode.Clips available from samples other remarks: were used and a failure mode was not duplicated, 4 clips closed were compared with the two clips received (closed) and it was observed that the two clips were not fully closed according with the results the comparison.A potential cause for this defect could be the use of the device, if the clip is not fully closed in the applier, as instructed by the ifu.Therefore, no corrective action will be taken for this condition.
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