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As reported, during a ureteroscopy laser lithotripsy using a cook single-use holmium laser fiber, the fiber broke apart about 3/4 the way up the fiber, and it fell to the floor.It appeared that the coating over the fiber was damaged and may have caused the break.Another laser fiber from a different lot number was used to complete the procedure.No section of the device remained inside of the patient.No additional procedures were required due to the occurrence.No adverse effects were reported due to the alleged malfunction.
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H3: device evaluated by mfg: other (81) - device evaluation has begun; however, a conclusion is not yet available.This report includes information known at this time.A follow-up report will be submitted should additional relevant information become available.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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Blank fields on this form indicate the information is unknown, unchanged, or unavailable.Event description: as reported, during a ureteroscopy laser lithotripsy using a cook single-use holmium laser fiber, the fiber broke apart about 3/4 the way up the fiber, and it fell to the floor.It appeared that the coating over the fiber was damaged and may have caused the break.Another laser fiber from a different lot number was used to complete the procedure.No section of the device remained inside of the patient.No additional procedures were required due to the occurrence.No adverse effects were reported due to the alleged malfunction.Investigation ¿ evaluation: a visual inspection of the returned device was conducted.A document based investigation was also performed including a review of complaint history, device history record (dhr), manufacturing instructions, the instructions for use (ifu), and quality control data.One unopened package, containing a cook® single-use holmium laser fiber was returned for investigation.The actual/suspect device was not returned.Laser fiber breakage was not confirmed on the unopened laser fiber.A review of the device history record found no non-conformances related to the reported failure mode.A review of complaint history records shows no other complaints associated with the complaint device lot.Because there were no related non-conformances, adequate inspection activities have been established, there is objective evidence that the dhr was fully executed, and no other lot related complaints that have been received from the field, it was concluded that there is no evidence that nonconforming product exists in house or in the field.A review of relevant manufacturing and quality control documents was conducted.All laser fibers are inspected during the manufacturing process to assure no breaks are present along the fiber length and there is green output from the end of fiber, creating a well-defined circle.The instructions for use (ifu), provides the following information to the user related to the reported failure mode: precautions a number of different factors affect the life of any fiber, including: improper handling.Extended lasing at high power, never subject fiber optics to sharp bends in handling, use, or storage.Discard any fiberoptic assembly that is cracked or broken or does not meet minimum transmission standards.Cook has concluded that based on evidence presented, the most probable cause of the laser fiber separation was related to improper handling.The risk analysis for this failure mode was reviewed, and it was determined that no actions are required.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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