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A visual, functional, and dimensional inspection was performed on the returned device.The reported stent dislodgement and difficult to advance/position was not confirmed.Production record and corrective and preventive actions (capa) reviews were performed and revealed no indication of a product quality issue.Additionally, a review of the complaint handling database identified no similar complaints from this lot.A conclusive cause for the reported difficulties could not be determined; however, stent dislodgement may be attributed to several factors including, but not limited to, improper or inadequate crimping at the time of manufacture, incorrect sheath sizing, positive pressure during preparation, forced sheath removal, handling of the stent during preparation, interaction with the anatomy, or interaction with accessory devices.Difficult to advance/position may be attributed to several factors including, but are not limited to, product placement technique, guiding catheter support, inner diameter of guide wire lumen, outer diameter of the guide wire, patient morphology, condition of the guide wire, interaction with accessory devices, damage to the catheter or accumulation of blood or contrast.In this case, it is possible that the device may have interacted with accessory devices (two guide wires inserted) during advancement, as resistance was noted, contributing to the reported difficult to advance/position.Further interaction with accessory devices during advancement may have contributed to the observed material deformation (distal stent damage) which the account initially reported as a stent dislodgement; however, this cannot be confirmed.There is no indication of a product quality issue with respect to manufacture, design, or labeling; therefore, no product-related corrective action will be implemented in this case.
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