During an unknown procedure, a smart control 8x40 120 cm stent delivery system (sds) was so stiff that it did not enter the catheter.There was no reported patient injury.The device was returned for analysis.One non-sterile ses smart control 8x40 120 cm sds was received coiled inside a plastic bag.The inner body was received separated.The distal tip section was not returned.No other discrepancies were found.Per dimensional analysis the outer diameter (od) of the outer sheath was noted per specification.Per sem analysis the catheter¿s separated areas presented with material deformation (bending conditions) and evidence of elongations.The elongations noted suggest that the device was subjected to stretching/pulling events that exceeded the material yield strength prior to the separation.No other issues were noted.A review of the manufacturing documentation associated with lot 17641583 was performed and no issues were noted that were related to the reported complaint.The event "stent delivery system (sds)-ses - resistance/friction-outer sheath - during use" reported by the customer was not confirmed since the outer diameter was found within specification, the exact cause of reported event could not be conclusively determined.The events of ¿catheter tip ¿ separated¿ and ¿inner shaft ¿ separated¿ were also noted during analysis.While the cause of these events could not be conclusively determined, vessel characteristics as well as procedural and handling factors likely contributed to these events.Evidence of bending and elongation suggest that the device was subjected to excessive force.As cautioned in the instructions for use (ifu), ¿if resistance is encountered at any time during the insertion procedure, do not force passage.Resistance may cause damage to stent or vessel.Carefully withdraw the stent system without deploying the stent.¿ neither the phr review nor the product analysis suggests that the events are related to the manufacturing process; therefore, no corrective or preventive actions will be taken at this time.
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