(b)(4).The customer returned one-unit ae05ml autoend05 ml for investigation.The returned sample was visually examined with and without mag nification.Visual examination of the returned device revealed that the sample appears used as there was biological material around the jaws.The device was returned with its trigger partially engaged.There was also a clip that was improperly loaded into the jaws.In order to perform functional inspection on the sample, the improperly loaded clip was manually removed from the device.Then an attempt to complete the trigger cycle was made by applying hand pressure to the trigger.Upon engagement of the trigger, no audible ratchet sound was heard indicating that the internal ratchet ears were broken.The next clip did not load properly into the jaws.The sample was disassembled to inspect the internal components.Upon disassembly, it was confirmed that both ratchet ears were broken.The ratchets on each side of the handle frame appeared to be bent.Only two clips were returned in the device indicating that 13 clips were fired by the end user.Although clip stacking could not be confirmed, the broken ratchet likely caused the clips to become out of position and prevented the clips from properly loading into the jaws.This could cause the clips to not be completely open when attempting to fire.It could not be determined what exactly caused the ratchet ears to break.A capa has been opened to further investigate this issue.Multiple root causes have been identified for clip stacking issues, centered around design and manufacturing related root causes.Additionally, user error can contribute to clip stacking issues.Corrective actions are being implemented via the capa.The ifu for this product, l06072, was reviewed as a part of this complaint investigation.The ifu for this product states, "mishandling of appliers may result in improper load and/or closure of the ligating clip." a capa has been opened to further investigate this issue.Multiple root causes have been identified for clip stacking issues, centered around design and manufacturing related root causes.Additionally, user error can contribute to clip stacking issues.Corrective actions are being implemented via the capa.The reported complaint of "clip(s) not opening" was confirmed based upon the sample received.The device was returned with two clips remaining and its trigger partially engaged.Upon functional inspection, it was found that the clips were not able to properly load into the jaws of the device.The sample was disassembled that it was found that the internal ratchet ears were both broken.The ratchets on each side of the handle frame were also bent.Although clip stacking could not be confirmed, the broken ratchet ears likely caused the clips to become out of position and stack on one another.This could cause the clips to not be completely open when attempting to fire.A capa has been opened to further investigate this issue.Multiple root causes have been identified for clip stacking issues, centered around design and manufacturing related root causes.Additionally, user error can contribute to clip stacking issues.Corrective actions are being implemented via the capa.
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