H10: manufacturing review: a manufacturing review was not required as this is the only complaint reported to date for this product and lot.Investigation summary: one atlas pta dilatation catheter was returned for evaluation.The returned balloon was noted to be a constrictor and contains unraveled, peeled peebax and frayed fibers, which were noted on the balloon under microscopic observation; no other specific anomalies were noted during the visual evaluation.During the functional testing, the balloon was inflated with the in-house presto inflation device up to 6 atm.Upon inflating the balloon, a constriction was noted on the balloon near the distal end, then the balloon was deflated without any issue.No other functional testing was performed.Although during the functional testing the balloon was able to inflate and deflate, a constriction was noted at the distal end upon inflating the balloon, and it was also noted during the visual evaluation; and thus the investigation is confirmed for the reported abnormal inflation.Peeled peebax, unraveled and frayed fibers were able to be observed, hence the investigation is also confirmed for these identified anomalies.A definitive root cause for the reported abnormal inflation issue and identified peeled peebax, unraveled and frayed fibers could not be determined based upon the provided information.Labeling review: a review of product labeling documentation (e.G., procedural instructions, indications, warnings, precautions, cautions, possible complications, contraindications, nursing guide, and unit label) did not find any product labeling inadequacy.H10: d4 (expiration date: 09/2025).
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