MAUDE Adverse Event Report: AOMORI OLYMPUS CO., LTD. SINGLE USE 3-LUMEN SPHINCTEROTOME V; SINGLE USE 2-LUMEN SPHINCTEROTOME

Model Number	KD-V411M-0720
Medical Device Problem Code	Break (1069)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	11/20/2023
Type of Reportable Event	Malfunction
Event or Problem Description
An olympus sales representative reported on behalf of the customer that the knife wire of the kd-v411m-0720/single use 3-lumen sphincterotome v broke (no falling off).The issue was found during an unspecified therapeutic procedure.The facility replaced it with another similar and completed the intended procedure.There were no reported delays.There were no reports of patient or user harm associated with this event.
Additional Manufacturer Narrative
The device was returned to olympus for evaluation and the evaluation found the knife wire had broken, the broken part was charred and melted.The outer diameter of the knife wire was measured, no abnormalities were found.It was confirmed that there were no problems with the length of the knife wire or wire sheathing, and that there were no defects on the actual product.No other abnormalities that could lead to breakage of the knife wire were confirmed.The investigation is ongoing.A supplemental report will be submitted upon completion of the investigation or if any additional information is provided by the user facility.
Additional Manufacturer Narrative
This report is being supplemented to provide additional information based on the legal manufacturer's final investigation.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 a definitive root cause was not established.However, multiple factors may have contributed to the broken knife wire: 1.The device was not protruded enough from the endoscope until the rear end of the cutting wire was in the field of view.2.Due to the situation of ¿1¿ description, the cutting wire and the endoscope were being close to each other.3.The output was activated in state of ¿2¿ description.This might have led to an electrical discharge between the cutting wire and the distal end of the endoscope.4.An electrical discharge possibly occurred, and the cutting wire became hot instantly.That might have caused the cutting wire to break.5.Since the cutting wire was broken, it was felt that the cutting wire was no longer energized.The occurrence of the reported problem can be prevented by adhering to the instructions for use (ifu) which states the following: ¿¿ since the cutting wire is very thin, it may break off in the following cases: the distance between the papilla of vater and the wire is very short, the output is too high or activated while the wire touches metal parts of the endoscope, or the wire is tightened too strong.When the wire breaks off, its proximal end will be retracted toward the endoscope if the slider is pulled.If the slider is pushed, the wire will be pushed out toward the papilla or move sideways.If the wire breaks off, stop the output immediately and pull the slider completely to retract the broken wire into the tube.Then withdraw the instrument from the papilla.Otherwise, patient injury, such as perforations, bleeding, or lacerations within the biliary duct and/or damage of the endoscope could result.¿be sure that the rear end of the cutting wire is extended from the distal end of the endoscope.In case the cutting wire contacts the forceps elevator, insufficient output or unintended tissue injury may occur.¿ do not activate output while the cutting wire touches the metal parts of the endoscope, or they are being close together.This could burn the tissue and/or damage the endoscope or the instrument.¿ olympus will continue to monitor field performance for this device.

• Brand Name: SINGLE USE 3-LUMEN SPHINCTEROTOME V
• Common Device Name: SINGLE USE 2-LUMEN SPHINCTEROTOME
• Manufacturer (Section D): AOMORI OLYMPUS CO., LTD.; 2-248-1 okkonoki; kuroishi-shi, aomori 036-0 357; JA 036-0357
• Manufacturer (Section G): AOMORI OLYMPUS CO., LTD.; 2-248-1 okkonoki; kuroishi-shi, aomori
• Manufacturer Contact: todd brill ; 800 west park drive; westborough, MA 01581 ; 5082077661
• MDR Report Key: 18257222
• Report Number: 9614641-2023-01837
• Device Sequence Number: 7116578
• Product Code: KNS
• UDI-Device Identifier: 04953170184017
• UDI-Public: 04953170184017
• Combination Product (Y/N): N
• Initial Reporter Country: JA
• PMA/510(K) Number: K950166
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Serviced by Third Party (Y/N): Unknown
• Reporter Type: Manufacturer
• Report Source: Other,Foreign,Health Professional,User Facility,Company Representative
• Initial Reporter Occupation: Biomedical Engineer
• Type of Report: Initial,Followup
• Report Date (Section B): 12/19/2023

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Is this an Adverse Event Report?: No
• Is this a Product Problem Report?: Yes
• Operator of Device: Health Professional
• Device Model Number: KD-V411M-0720
• Device Lot Number: 35V
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Date Returned to Manufacturer: 11/30/2023
• Is the Reporter a Health Professional?: Yes
• Was the Report Sent to FDA?: No
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 11/20/2023
• Supplement Date Received by Manufacturer: 12/12/2023
• Initial Report FDA Received Date: 12/04/2023
• Supplement Report FDA Received Date: 12/19/2023
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• Date Device Manufactured: 05/17/2023
• Is the Device Labeled for Single Use? (Y/N): Yes
• Is This a Single-Use Device that was Reprocessed and Reused on a Patient? (Y/N): No
• Usage of Device: Initial
• Patient Sequence Number: 1
• Patient Sex: Unknown