This report is being submitted pursuant to the provisions of 21 cfr, part 4.This report may be based on information which has not been investigated or verified prior to the required reporting date.This report does not reflect a conclusion by biosense webster, inc., or its employees that the report constitutes an admission that the product, biosense webster, inc.Or its employees caused or contributed to the potential event described in this report.If information is obtained that was not available for the initial report, a follow-up report will be filed as appropriate.If additional information is received regarding this event, a supplemental 3500a report will be submitted to the fda.Manufacturer's reference number: pc-(b)(4).
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On 17-jan-2023, the bwi product analysis lab received the device for evaluation.The product investigation was subsequently completed.It was reported that an unknown patient underwent an atrial fibrillation (afib) ablation procedure with an 8.5f sheath with curve viz mdc.It was reported that while the sheath was in the patient the hemostatic valve dislodged.It was replaced and the issue resolved.Case continued.No patient consequences were reported.Device evaluation details: visual analysis revealed that the hemostatic valve was dislodged inside the hub component.A microscopic examination of the hemostatic valve surface showed stress marks on the outer diameter.The damage observed could be related to the incorrect insertion of the dilator into the sheath causing the dislodgment of the valve; the stress marks and physical damage observed suggest that excessive force or manipulation was applied; however, this could not be conclusively determined.A device history record was performed for the finished device number lot 50000186 and no internal actions related to the complaint were found during the review.The issue reported by the customer was confirmed.The odp (optimal device performance guide) contains the following caution: always insert a dilator straight into the center of the sheath¿s valve to prevent damage.Do not insert a dilator at an angle, as damage to the sheath valve may occur.If additional information is received regarding this event, a supplemental 3500a report will be submitted to the fda.Manufacturer's reference number: (b)(4).
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