Manufacturing review:the device history records have been reviewed and this lot met all release criteria.There was nothing found to indicate there was a manufacturing related cause for this event.Investigation summary:the device was returned for evaluation.A visual inspection found peeling pebax throughout the length of the balloon.However, no frayed or unraveling fibers were identified on the balloon.Therefore, the investigation is confirmed for peeling pebax, and is unconfirmed for the reported frayed material.It is likely that the user perceived the peeling pebax as frayed material.The definitive root cause for the identified peeling pebax could not be determined based upon the available information.An investigation is currently open to address the peeling pebax issue.Labeling review: the review of the ifu (instructions for use), indications, warnings, precautions, cautions, possible complications, and contraindications showed that the product labeling is adequate.
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