(b)(4).The customer returned one sheath ext assembly with dilator.Visual examination showed signs of use in the form of biological material near the sheath tip.Microscopic examination revealed damage on the sheath tip.The metal ring on the sheath tip was damaged and did not wrap around the entire circumference of the sheath tip.The dilator tip was also damaged.No other defects or anomalies were observed.The length and outer diameter of the sheath were measured and were found to be within specification.A device history record review was performed with no relevant findings.The ifu provided with the kit informs the user to "perform skin wheal using desired needle." the ifu also cautions the user, "do not withdraw dilator until sheath is well within vessel to minimize the risk of sheath tip damage." the customer report that the sheath tip was damaged was confirmed through complaint investigation.Signs of use in the form of biological material were identified near the distal tip of the sheath.The returned sample met all dimensional requirements, and a device history record review showed no relevant findings.Based on the returned sample, the probable cause of the damage is unintentional user error.Teleflex will continue to monitor and trend for complaints of this nature.
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