As reported, during a flexible ureteroscopy, the basket of an ncircle delta wire tipless stone extractor was deformed, making stones difficult to retrieve.The shape was not basket-like and "2 wires stick more or less together." the device was tested prior to use in the uncoiled position.The stones were 2 to 3 millimeters and the handle was in the straight position when in use.A new basket was used to 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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Event summary: as reported, during a flexible ureteroscopy, the basket of an ncircle delta wire tipless stone extractor was deformed, making stones difficult to retrieve.The shape was not basket-like and "2 wires stick more or less together." the device was tested prior to use in the uncoiled position.The stones were 2 to 3 millimeters and the handle was in the straight position when in use.A new basket was used to 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.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 in open packaging.All fittings were tight, and the handle would not actuate basket.The handle was disassembled, and the basket could not be manually actuated.The basket assembly was removed from the basket sheath, and it was observed the basket was present and had the proper shape.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 caution, ¿enclose the device in the sheath before removing from the tray/holder,¿ and, ¿do not use excessive force to manipulate this device.Damage to the device may occur.¿ based on the available information, cook has concluded that the cause for the observed improper basket shape could not be determined.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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