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(b)(4).The customer reported the catheter was kinking during use.The customer returned one opened kit.The epidural needle and epidural catheter were removed and were visually examined with and without magnification.Visual examination of the returned needle revealed the needle appears typical with no defects or anomalies observed.Visual examination of the returned catheter revealed the catheter appears used.Biological material can be seen between the inner coils.No other defects or anomalies were observed.A dimensional inspection was performed on the returned epidural needle.The inner diameter measured 0.048in, which is within specification of a minimum of 0.0460in per graphic.A dimensional inspection was performed on the returned epidural catheter.The outer diameter of the returned catheter measured 1.06mm, which is within the specification of a maximum of 1.115mm per graphic.A functional test was performed on the returned sample by attempting to thread the returned catheter through the returned epidural needle.The catheter was threaded at the distal end and would thread through the epidural needle with some resistance met, which caused the catheter to kink at a certain point.A drag test was performed using the returned components and a weight.The catheter could thread through the returned needle; however, with a considerable amount of resistance met.The components failed the drag test.The drag test was repeated using the returned catheter and a lab inventory epidural needle.The returned catheter could thread through the lab inventory needle with no resistance met.The components passed the drag test, indicating there was no issue with the returned epidural catheter.The drag test was once again repeated using a lab inventory epidural catheter and the returned epidural needle.The lab inventory catheter could thread through the returned needle; however, with a considerable amount of resistance met.The components failed the drag test, indicating there was an issue with the returned epidural needle.A device history record review was performed on the epidural catheter and epidural needle with no relevant findings.The reported complaint of the catheter kinking during use was partially confirmed based on the sample received.The returned catheter could be threaded through the returned needle; however, with some resistance met causing the returned catheter to kink.The returned components failed a functional drag test.The returned catheter could be threaded through a lab inventory epidural needle with no resistance met and passed a functional drag test, indicating there was an issue with the returned epidural needle and not the returned epidural catheter.Also, the returned catheter outer diameter was found to be within specification.A device history record review was performed on the epidural catheter and epidural needle with no relevant findings.Therefore, based on the functional testing performed on the returned catheter with a lab inventory needle, there were no functional issues found with the returned sample.
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