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It was reported that during a retrograde intrarenal surgery (rirs) procedure, the basket of a ncircle tipless stone extractor was out of shape after entering the mirror.The physician used another same type device to successfully complete the procedure.A section of the device did not remain inside the patient¿s body.The patient did not require any additional procedures due to this occurrence.According to the initial reporter, the patient did not experience any adverse effects due to this occurrence.
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Correction: d4 (udi), h6 - annex a (medical device problem code), annex g (component code).Investigation ¿ evaluation.It was reported that during a retrograde intrarenal surgery (rirs) procedure, the basket of a ncircle tipless stone extractor was out of shape after entering the 'mirror'.The physician used another same type device to successfully complete the procedure.As reported, the patient did not experience any adverse effects or require any additional procedures due to this occurrence.Reviews of documentation including the complaint history, device history record (dhr), quality control procedures, specifications, manufacturing instructions (mi), and instructions for use (ifu), as well as a visual inspection and functional test of the returned device, were conducted during the investigation.One used device was returned to cook for evaluation.Upon visual inspection, the basket sheath was noted to be stretched with a coiled appearance starting 1 cm from the end.The handle was returned in a closed position.The collet was tight and male luer lock adapter was loose.The polyethylene terephthalate tubing was present.Via a functional test, the handle did not actuate the basket which was likely due to the damage of the basket sheath.Cook has concluded that the device was manufactured to specification.Additionally, a document-based investigation evaluation was performed.A review of the device master record (dmr) concluded that sufficient inspection activities are in place to identify this failure mode prior to distribution.A review of the dhrs for the reported complaint device lot and the related subassembly lots revealed no relevant non-conformances.A complaint history search identified no other events reported for the related failure mode.Based on the available information, cook has concluded that there is no evidence suggesting nonconforming product exists either in house or in the field.Cook also reviewed product labeling.The ifu packaged with the device contains the following in relation to the reported failure mode: precautions.· do not use excessive force to manipulate this device.Damage to the device may occur.Based on the information provided, inspection of the returned device, and the results of the investigation, a potential root cause for this event could not be established.The appropriate personnel have been notified.Cook will continue to monitor for similar complaints.Per the risk assessment no further action is required.This report is required by the fda under 21 cfr part 803 and is based on unconfirmed information submitted by others.Neither the submission of this report nor any statement contained herein is intended to be an admission that any cook device is defective or malfunctioned, that a death or serious injury occurred, nor that any cook device caused, contributed to, or is likely to cause or contribute to a death or serious injury if a malfunction occurred.
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