(b)(4).The customer returned one, assembled, two-lumen central venous access catheter and a lidstock for evaluation.Visual examination of the dilator revealed that the tip was damaged.The dilator tip showed signs of use in the form of dried blood.Microscopic examination revealed that the dilator was split in one location around the circumference of the tip.The circumference of the tip was slightly flared outward and white discoloration was found along the split , indicating stress.The dilator length from the distal end of the hub to the dilator tip measured 8 13/16", which matches the specification of 8 12/16"-8 14/16", per dilator product drawing.The dilator inner and outer diameter were also within specification.A device history record review was performed and no relevant findings were found to suggest a manufacturing issue.The ifu provided with the kit was also reviewed as part of this complaint investigation.It instructs the user to "enlarge cutaneous puncture site with cutting edge of scalpel positioned away from the spring-wire guide" prior to dilator insertion.The reported complaint that the dilator tip was damaged during use was confirmed through complaint investigation.The tip of the dilator was cracked with discoloration around the edges, indicating that it had undergone stress.A device history record review was performed and no relevant findings were found to suggest a manufacturing issue.Based on the condition of the returned sample and the customer report , it was determined that unintentional user error caused or contributed to this event.Teleflex will continue to monitor and trend for complaints of this nature.
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