It was reported that using a right femoral artery access approach during a procedure of the ostial, proximal right coronary artery (rca) the lesion was predilatated with a 4.0 x 12 mm nc trek balloon dilatation catheter (bdc) and a 4.0 x 15 mm xience xpedition stent was deployed and it was noted that during routine post-dilatation with the 4.5 x 12 mm nc trek bdc after 3 to 4 inflations at the highest atmosphere (atm) of 16 atm, the balloon failed to fully deflate.The physician noted that the balloon could not be retracted through the 6 fr guide catheter.Both devices were removed as a system over the guide wire from the anatomy without issue.There was no reported adverse patient effect.There was no reported clinically significant delay in the procedure.Additionally, outside the anatomy the bdc was noted to appear 'baggy' [loose]; and a technician successfully inflated and deflated the balloon without issue.No additional information was provided.
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(b)(4).Concomitant products: guide wire: choice pt extra support, balance middleweight, allstar; guide cath: jr4 6 fr launcher; stent: xience xpedition.Evaluation summary: the product was returned and the reported deflation difficulty could not be confirmed during return functional testing.The definitive cause of the reported deflation difficulty could not be determined.The reported guiding catheter resistance was confirmed during return testing but it was due to the flat balloon refold while the initial guiding catheter resistance was due to a partially inflated balloon.A review of the lot history record revealed no associated non-conformances that would have contributed to the reported event.A query of the complaint handling database for the reported lot did not indicate a manufacturing issue.Return analysis did not indicate a product quality deficiency.It should be noted that the nc trek instructions for use (ifu) states: with 4.5 mm and 5.0 mm balloon dilatation catheters, some increased resistance may be noted upon insertion or withdrawal into or out of the guiding catheter.Choosing a larger guiding catheter size may minimize this.Based on the information reviewed and the return analysis, there is no indication of a product deficiency.
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