A visual and functional inspection was performed on the returned device.The reported inflation problem was unable to be confirmed, however there were noted inner/outer member stretched damages indicative to inflation/deflation issues.A review of the lot history record identified no manufacturing nonconformities issued to the reported lot that would have contributed to this event.Additionally, a review of the complaint history identified no other similar incidents from this lot.The investigation determined the reported/noted difficulties appear to be related to circumstances of the procedure as it is likely that inadvertent mishandling during sheath/stylet removal resulted in the noted stretched inner member and outer member thereby reducing the inflation/deflation lumen; thus resulting in the reported inflation problem.There is no indication of a product quality issue with respect to manufacture, design or labeling.
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It was reported that the procedure was to treat a mildly calcified mid right coronary artery that was 90% stenosed.A balance middleweight universal guide wire was advanced to the lesion.Pre-dilatation was performed with a 2x20mm mini trek balloon under a pressure of 10 atmospheres (atms).Then a 3.5x48mm non-abbott stent was positioned and implanted at the lesion.Post-dilatation was then decided to be performed with a 3.5x20mm nc trek balloon, but when dilated the balloon completely failed to inflate although the indeflator showed a pressure of 14 atms.The balloon was simply removed without issue.When being advanced there was no resistance noted.An attempt was made to inflate the balloon outside of the patient via troubleshooting, but it still failed to inflate although being pressurized at 20 atms.Another balloon was used to successfully complete the procedure.It was confirmed that there was no leak or loose connection.There were no adverse patient effects and no clinically significant delay in the procedure.No additional information was provided.12/9/20: device analysis noted the inner member and outer member (shaft) were stretched 1mm proximal to the proximal seal for a length of approximately 1mm.The proximal seal was not stretched.
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