|
Qn#(b)(4).The customer returned one peel away sheath for analysis.Definite signs of use were observed on the peel away sheath body.Visual analysis of the sheath revealed that both tabs were separated from the sheath body.A portion of the proximal end of the peel-away extrusion was still molded to the tabs.Microscopic examination confirmed the damage and revealed that the point of separation was stretched and jagged.It was also noted that the peel-away sheath was split down the score lines towards the distal portion of the sheath.Functional inspection could not be performed due to the damage.Manufacturing was contacted as a part of this complaint investigation.Based on their feedback, the molding of the sheath to the hub appears aligned as intended.They stated that variation in wall thickness of the white and blue portions during the extrusion process could result in tearing of the sheath, however rare.This failure mode cannot be confirmed since the sheath is destroyed in use.They stated that, based on the appearance of the tearing/damage in this sample, it is more likely that unintentional undue force by the user caused or contributed to the damage.A device history record review was performed, and no relevant findings were identified.The instructions for use (ifu) provided with this kit informs the user "withdraw peel-away sheath over catheter until sheath hub and connected portion of sheath is free from venipuncture site.Grasp tabs of peel-away sheath and pull away from the catheter, while withdrawing from vessel until sheath splits down its entire length." the report that a peel-away tabs separated during use was confirmed through complaint investigation.Visual analysis revealed that both peel-away tabs had separated from the assembly.A portion of the sheath extrusion was still molded to this separated tab.Manufacturing was contacted regarding this failure mode, and they stated that the appearance is consistent with inadvertent damage caused to the sheath during use.Based on the customer report, the sample received, and the comments from manufacturing, it was determined that unintentional use error likely caused or contributed to this event.Teleflex will continue to monitor and trend for reports of this nature.
|