As reported, prior to an unspecified procedure using a ngage nitinol stone extractor, the user checked the device integrity at preparation stage and found "the basket wire intertwined".This device was not used.The user changed to another same device to complete the procedure.No adverse effects to the patient.
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Investigation/evaluation: a visual inspection and functional testing of the returned device was conducted.A document based investigation was also performed including a review of complaint history, device history record, manufacturing instructions, specifications, the instructions for use, and quality control data.The complainant returned one unopened device for investigation.The returned packaging confirms the reported complaint device lot number.Inspection of the returned device noted: the device was returned with the handle and the basket formation in the open position.The mlla [male luer lock adapter] was tight and the collet knob was tight and secure.Functional testing noted the handle actuates the basket formation to the open and closed positions.A review of the device history record found no non-conformances.A review of complaint history records shows no other complaints associated with the complaint device lot.The instructions for use (ifu), provides the following information to the user related to the reported failure mode: caution: this device is conductive.Avoid contact with any electrified instrument.Caution: sterile if the package is unopened or undamaged.Do not use if package is broken.Important: enclose device in sheath before removing from tray/holder.Important: excessive force could damage device.A review of relevant manufacturing documents was conducted.It was concluded that the device aspect in question was visually/functionally inspected by quality control and no related gaps in production or processing controls were noted.The device was returned in an unopened pouch.The device appeared normal in the packaging and was found to function normally when tested, with the basket opening and closing without issue.The pictures provided by the user show the device inside the package, with no abnormalities apparent.The returned device was found to be functional and without damage.The risk analysis for this failure mode was reviewed, and it was determined that no additional risk mitigating activity is required.The appropriate internal personnel have been notified and we will continue to monitor for similar complaints.This report is required by the fda under 21 cfr part 803.This report is based on unconfirmed information submitted by others.Neither the submission of this report nor any statement made in it is intended to be an admission that any cook device is defective or malfunctioned; that a death or serious injury occurred; or that any cook device caused or contributed to; or is likely to cause or contribute to a death or serious injury if a malfunction occurred.
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