It was reported that during the procedure in the diagonal coronary artery with medium calcification and no tortuosity, an unspecified stent was implanted in the left anterior descending (lad) artery, followed by post-dilation.Noting resistance during advancement with the anatomy and the guiding catheter, the 190cm ht torque balance middleweight guide wire (gw) was switched with an unspecified gw between the diagonal coronary artery and the lad coronary artery in order to open the stent struts towards the diagonal artery.Upon withdrawal of the gw, resistance was felt with the diagonal artery and the stent.The gw tip separated.Unspecified attempts were made to retrieve the tip; however, retrieval was unsuccessful and the separated segment remains between the implanted stent and the lad wall.The procedure was prolonged, with the patient receiving increased doses of x-ray and iodinated contrast material.The hospitalization was prolonged, as additional monitoring was required due to the thromboembolic risk.There was no adverse patient sequela.No additional information was provided.
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The device was not returned for analysis.A review of the corrective and preventive actions (capa) database was performed and revealed no related complaint assessment capas.The electronic lot history record (elhr) no associated manufacturing nonconformities issued to the reported lot.Additionally, a query of the complaint handling database for the reported lot revealed no indication of a lot specific issue.It was reported that the stent was implanted such that the guide wire became stuck between the stent and vessel wall.It should be noted that the hi-torque balance guide wire instructions for use states: ¿torque a guide wire if the tip becomes entrapped within the vasculature.¿ the investigation determined the reported difficulty during advancement, patient effect, and treatment appear to be related to the operational context of the procedure.Additionally, it is likely that the reported difficulty during removal, material separation, device damaged by another service, and patient effects were due to a use deviation.In this case, it was reported that the guide wire interacted with the patient¿s moderately calcified lesion during advancement, resulting in the reported difficulty during advancement.Additionally, it was reported that the stent was implanted such that the guide wire became stuck between the stent and the vessel wall.It is possible that manipulation of the guide wire, after becoming stuck, resulted in the reported material separation.Damage to the guide wire would have impacted its maneuverability, possibly resulting in the reported difficulty during removal from the guide catheter.The separated portion of the guide wire remains between the implanted stent and the vessel wall.There is no indication of a product quality issue with respect to manufacture, design, or labeling.
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