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It was reported, the nforce nitinol helical stone extractor was tested prior to a ureterolithotripsy procedure and it was found that the extractor did not work.The patient did not require any additional procedures due to this occurrence.No adverse events have been reported as a result of the alleged malfunction.Additional information has been requested regarding the event.At the time of this report, no further information has been provided.
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Blank fields on this form indicate the information is unknown, unchanged, or unavailable.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, the device history record, drawings, instructions for use, manufacturing instructions, quality control data, and specifications.The complaint device was returned with the handle and the basket formation in the opened position.The male luer lock adapter (mlla) is finger tight.The collet knob is tight and secure.The polyethylene terephthalate tubing (pett) measures 1.8 cm in length.Functional testing determined the handle actuates basket the formation to open position, but does not fully retract the basket formation.Visual examination noted the basket sheath is accordioned/buckled 2 mm from distal tip of support sheath.The support sheath is slightly bowed.The support sheath and basket sheath are still adhered.There is 2 mm of distal cannula exposed at the distal tip of the basket sheath.The cannulated handle has slipped from the collet.During the investigation, the support sheath and basket sheath were inadvertently detached.A review of the device history record found there were no non-conformances that may have caused or contributed to this this incident.A search of complaint records revealed this is the only complaint received for the complaint device lot number ns8396760.As per the instructions for use (ifu), precaution section: enclose the device in the sheath before removing from the tray/holder.Do not use excessive force to manipulate this device.Damage to the device may occur.All devices are inspected for functionality and damage prior to packaging.The condition of the returned device makes it possible that it was inadvertently damaged during unpacking / handling.The ifu contains cautions about manipulating the device to prevent damage.The investigation conclusion is cause traced to the user; unintended use error caused or contributed to the event.Per the quality engineering risk assessment, no further 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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