Investigation summary: three photos were received for evaluation.A review of the provided photos confirmed damage to the extension tubing.We were unable to confirm the damage to the manufacturing process.The appropriate personnel have been notified and we appreciate you taking the time to bring this observation to our attention.Investigation conclusion: reported defect was confirmed in images received; however, after evaluate 3 images, we cannot confirm or associate the reported defect to manufacturing process.This defect is not common in our process.Based on dhr review for material reported, the product lot met the final assembly specifications and qa inspections; however customer detected a damage in the pvc tubing.Currently, there is a sampling plan in place lot by lot to look for this kind of damage and according to internal process rejects (qn¿s) database, no issues like this have been reported.An inspection was performed on final assembly looking for any activity that could cause this damage and nothing extraordinary came up.Personnel is properly trained on their activities.Note: slide clamp only is placed in the tubing, never is clamped.No corrective action required at the failure.Process fmea (b)(4) was reviewed and there are proper controls in place to detect product malfunctions.Root cause description: based on investigation results to date, the root cause could not be determined.
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