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The customer's reported complaint of the gold tip detached from the fiber's shaft tip was confirmed.The most likely root cause for the tip detaching is dried blood on tip from first ablation that was not removed prior to pulling fiber back through tre-sheath.During a procedure, it is common for blood and biological matter to form on the tip tube due to heating that can occur in that area from the laser energy, as well as to migrate into the distal end of the tre sheath.That appears to be the case in this incident, as there was also significant biological material on the od of the gold tip.It is probable that when the fiber assembly was withdrawn back through the tre sheath for cleaning after the initial procedure, significant withdrawal force was applied to overcome interference encountered between the gold tip tube and tre sheath id due to a buildup of dried blood on the outer surface of the gold tip tube and a buildup of blood and / or biological matter inside the tre sheath, causing the tube to separate from the fiber.The deep indentation in the fiber's distal buffer layer and presence of adhesive indicates the gold tip was securely crimped into place during assembly.This is supported by the fact that the fiber was used to ablate the first vein with no issues.During the manufacturing process, the disposable fiber device receives a 100% inspection and an aql inspection in which the quality of the fiber strip is inspected.Prior to packaging, all components are inspected for damage.A review of the device history records was performed for the indicated lots for any deviations related to the reported failure mode of the complaint.The review confirms that the lots met all material, assembly and performance specifications; i.E.No ncr associated with reported failure mode.Labeling review: the instructions for use (16900393-01) which is supplied to the end user with this catalog number contains the following statement "avoid damaging the fiber by striking, stressing or excessive bending.Do not coil the fiber tighter than a diameter of 16cm." the user manual (man/31/0075), which is supplied to the end user with this unit, states "before using a fiber, check it carefully for any signs of damage during storage or transit.Protective caps should be in place over sma connectors.Do not use if there is any sign of damage." a review of the angiodynamics complaint system noted no adverse trends for this complaint type and product family.This type of complaint will continue to be monitored for trends.Reference (b)(4).
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