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Olympus received a medwatch mw5120181 reporting that the single use aspiration needle was used for approximately seven passes into the lymph nodes during a procedure without any indication of an issue.On the last pass, it was noted that the needle tip was unattached from its shaft and in the lung tissue.It was intact and recovered by the physician using bronchial forceps.All parts of the device were inspected and found intact without fragmentation post procedure.The physician also performed a complete airway inspection, ordered a post-procedure chest x-ray, and discussed it with the patient's family in the post procedure conference.Additional information received from the customer clarified that the procedure performed was a diagnostic bronchoscopy with endobronchial ultrasound-guided transbronchial needle aspiration, which was extended by five minutes and was completed with another device.The diagnostic outcome and patient's condition were not impacted by the failure.There was no further harm or user injury reported due to the event.
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This report is being supplemented to provide additional information based on the legal manufacturer's final investigation and device evaluation.Additionally, to provide an update to fields (d9 h3, and h4).The subject device was manufactured on april 2023 based on the provided 3 digit lot information "34v".However, the exact date the device was manufactured is unknown.The device was returned to olympus for inspection, and the customer's complaint/reportable malfunction was confirmed.The complete evaluation results are as followed: multiple kinks along the insertion tube portions.However, no damage to the locking mechanism, handle or slider was noted.There was visual residue on the distal end as well as throughout the insertion tube sheath, indicating the device has been used.The distal end of the needle was broken off and returned.The piece that broke off measured 20mm when measuring using a 150mm ruler.A functional check was also performed on the device.When manipulating the handle slider back and forth the needle was able to extended and retracted.However, force had to be applied to get the needle to move.A review of the device history record found no deviations that could have caused or contributed to the reported issue.Based on the results of the investigation and past investigation results it is likely the needle broke and fell off occurred by the following mechanism described below: 1.) a bending force was applied to the needle tube when piercing the hard body tissue during the procedure.This caused the needle tube to bend excessively.2.) when the needle slider was pulled, a force was applied to the needle tube in a direction to make it straight.This caused the needle tube to break.However, the root cause of the suggested event could not be determined.The event can be prevented by following the instructions for use which state: "when inserting the instrument into the endoscope, the distal end of the needle tube may be bent.When piercing the target, confirm the distal end of the sheath and needle tube in the endoscopic field of view and/or ultrasound image while considering such bending.Otherwise, patient injury such as perforation, bleeding, or mucous membrane damage may occur.Do not try to straighten a bent or deformed needle with your hands because the needle may break.Use a spare needle instead." olympus will continue to monitor field performance for this device.
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