The biosense webster, inc.Product analysis lab received the device on (b)(6) 2022.The device evaluation was completed on (b)(6) 2022.The product was returned to biosense webster for evaluation.Visual inspection and microscopic examination of the returned device were performed following bwi procedures.Visual analysis revealed that the hemostatic valve was not found inside the device., and the shaft of the device was cut at the mid-section, however, based on the event information, this damage occurred outside the manufacturing facilities.The valve was found blocking the shaft at the handle area of the device and microscopic examination of the hemostatic valve surface showed stress marks on the outer diameter.The stress marks suggest that excessive force or manipulation was applied due to an extreme off axis angle of insertion.Valve dislodgement occurs when extreme off axis angles is performed during insertion with the dilator, outside of what is recommended in the odp (optimal device performance guide).In addition, the dilator and a good known lab sample catheter were introduced through the sheath, and no obstruction or resistance was felt.As no resistance was detected, the probable root cause of the obstruction issue could be related to the dislodgment of the valve.A device history record (dhr) was performed for the finished device 50000082 number, and no internal actions related to the complaint were found during the review.The issue reported by the customer was confirmed.The odp contains the following caution: always insert a dilator straight into the center of the sheath¿s valve to prevent damage to the valve.Do not insert a dilator at an angle, as damage to the sheath valve may occur.As part of the quality process, all devices are manufactured, inspected, and released to approved specifications.This product issue will be addressed through the quality system.An internal corrective action has been opened to investigate this issue.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.Manufacturer's reference number: (b)(4).
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It was reported that a patient underwent an atrial fibrillation (afib) procedure with a carto vizigo¿ 8.5f bi-directional guiding sheath - medium and the biosense webster inc, (bwi) product analysis lab found that the hemostatic valve was not in the hub component.Initially, it was reported that the physician could not remove the ablation catheter from the vizigo¿ sheath.The bwi representative noted that at that point, they had to cut the sheath to be able to remove the catheter.The sheath was replaced, and the case was completed.No adverse patient consequences were reported.The issue of obstructed sheath was assessed as not mdr reportable.The potential that it could cause or contribute to a death or serious injury, or other significant adverse event, is remote.This event is being reported because the biosense webster inc, (bwi) product analysis lab received the device for evaluation and found that the hemostatic valve was not in the hub component.Additionally, the shaft of the device was cut at the mid-section.The awareness date for this reportable lab finding is (b)(6) 2022.
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