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It was reported during a flexible ureteroscopy (urs) procedure on the kidney, the cook® single-use holmium laser fiber tip broke off within the patient.A dornier medilas 20-watt laser machine was in use with the fiber and the power settings set at 5 (j/p), 10 hz, and 15w.As reported, there was no unintended section of the device left in the patient¿s body.There were no additional procedures required and no adverse effects to the patient caused by this occurrence.Additional event details were provided on 20dec2018: as reported, the patient was a (b)(6), male.After the fiber broke, they picked up the end of the fiber with forceps.After this they finished the case with a new fiber.The patient is well.
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Blank fields on this form indicate the information is unknown, unchanged, or unavailable.Additional information: investigation evaluation.A visual inspection and dimensional verification of the returned device was conducted.A document based investigation was also performed including a review of complaint history, the device history record, instructions for use, manufacturing instructions, quality control data, specifications, and trends.The customer returned one opened package, labeled with part number hlf-s273-hsma, and lot number 8850615.The fiber was received in used condition.Visual examination confirmed the fiber length measures 299cm.Under magnification the distal tip has a charred appearance.The fiber optic is recessed inside the blue cladding and the cladding appears ragged and torn.The device history record was reviewed and noted there were no non-conformances that are related to the reported failure a search of complaint records revealed this is the only complaint associated with complaint device lot number 8850615.The instructions for use (ifu) advises that a number of different factors affect the life of any particular fiber, including: extended lasing power.Continuous lasing with fiber tip in contact with tissue.Lasing with a contaminated or damaged proximal end.Improper handling.Poor laser beam alignment or focus.Never subject fiber optics to sharp bends in handling, use or storage.Always keep connector end dry and free from contaminates.Discard any fiberoptic assembly that is cracked or broken, or does not meet minimum transmission standards.Do not exceed power limits.The device is inspected visually and functionally for cracks and fractures by manufacturing and quality control and no notable gaps in production or processing controls were noted.Laser fibers are tested during manufacturing processes to assure the fiber is recognized and no failure codes are present.In addition, to assure no breaks are present along the fiber length and the green output from end of fiber creates a well-defined circle.Based on the investigation evaluation, there is no indication that a design or process related failure mode contributed to this event.Any of the listed factors provided in the ifu can cause the alleged malfunction.Based on the information available an investigation conclusion could not be determined.Per the quality engineering risk assessment, no additional risk mitigating activity is required at this time.Cook medical has notified the appropriate personnel and will continue to monitor this device via the complaints database 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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