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It was reported that during the lithotripsy procedure, the fiber component of the 'cook single-use holmium laser fiber' detached from the red hub cover.The laser fiber's aiming beam was weak and flickering, and as the fiber was inserted through the scope, the aiming beam became increasingly inconsistent with the visual field.The surgeon stopped use of the fiber and removed it.The procedure was then completed using a different, similar device.Upon inspection of the first fiber, it was found that the fiber was loosely attached to the red screw plug, which connects to the laser aperture.A photo has been provided showing the fiber separating from this red hub cover.A section of the device did not remain inside the patient¿s body.The patient did not require any additional intervention due to this occurrence.The patient did not experience any adverse effects due to this occurrence.
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Event description: it was reported that during the lithotripsy procedure, the fiber component of the 'cook single-use holmium laser fiber' detached from the red hub cover.The laser fiber's aiming beam was weak and flickering, and as the fiber was inserted through the scope, the aiming beam became increasingly inconsistent with the visual field.The surgeon stopped use of the fiber and removed it.The procedure was then completed using a different, similar device.Upon inspection of the first fiber, it was found that the fiber was loosely attached to the red screw plug, which connects to the laser aperture.A photo has been provided showing the fiber separating from this red hub cover.A section of the device did not remain inside the patient¿s body.The patient did not require any additional intervention due to this occurrence.The patient did not experience any adverse effects due to this occurrence.Investigation ¿ evaluation: reviews of the complaint history, device history record (dhr), instructions for use (ifu), quality control (qc) procedures, and a visual inspection of the returned device were conducted during the investigation.One cook single-use holmium laser fiber was returned for investigation in open packaging.The device was in two sections with the separation point being where the fiber connects to the connection hub.The point of separation had a stretched and melted appearance.Additionally, a document-based investigation evaluation was performed.A review of the device master record (dmr) concluded that sufficient inspection activities are in place to identify this failure mode prior to distribution.A review of the device history record (dhr) found no non-conformances related to the reported failure mode.A review of complaint history records shows no other related complaints associated with device lot.Because there are 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 that the device was manufactured to specification and there is no evidence that nonconforming product exists in house or in the field.Review of product labeling: cook also reviewed product labeling.The product ifu, ¿h-30 holmium laser fiber (single-use)¿ contains the following information related to the reported failure mode.¿warning ¿do not bend fiber at sharp angles.¿ ¿precautions ¿never subject fiberoptics to sharp bends in handling, use, or storage.¿ ¿how supplied ¿ upon removal from package, inspect the product to ensure no damage has occurred.¿ cook has concluded that the cause for the complaint could not be established.The appropriate personnel have been notified and cook will continue to monitor for similar events.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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