As reported, during a right retrograde intrarenal surgery (rirs), the wires broke on a ngage nitinol stone extractor and was unable to migrate the stone.Another cook basket was used to continue 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 the occurrence.The patient did not experience any adverse effects due to the occurrence.
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Event summary: as reported, during a right retrograde intrarenal surgery (rirs), the wires broke on a ngage nitinol stone extractor and was unable to migrate the stone.Another cook basket was used to continue 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 the occurrence.The patient did not experience any adverse effects due to the occurrence.Investigation - evaluation: reviews of the complaint history, device history record, instructions for use, manufacturing instructions, and quality control procedures and a visual inspection and functional test of the device were conducted during the investigation.The device was returned for investigation without a package or labeling.At the distal edge of the support tubing, there was damage to the basket sheath.The basket handle did not function properly.The basket was observed to have a broken wire.A document-based investigation evaluation was performed.No related non-conformances were recorded, and there have been no other reported complaints for this lot number.The device history record review provides objective evidence that the device was manufactured to specification.There is no evidence of nonconforming devices from the complaint lot in house or in the field.A review of relevant manufacturing documents was conducted.It was concluded that the device aspect in question was functionally inspected by quality control and no notable gaps in production or processing controls were noted.There is no indication that a design or process related failure mode contributed to the reported event.Sufficient inspection activities are in place to identify this failure mode prior to distribution.The device is provided with instructions for use which state, ¿excessive force could damage device.¿ based on the available information, cook has concluded that a cause for this event could not be established.Excessive force may have been inadvertently applied to the device, but no information was provided regarding device handling.Cook will continue monitoring of similar complaints and has notified the appropriate personnel of this event.Per the quality engineering 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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