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

Model Number	KD-V431M-0720
Medical Device Problem Code	Break (1069)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	02/27/2023
Type of Reportable Event	Malfunction
Additional Manufacturer Narrative
The device was returned to an olympus repair facility, and an evaluation of the device was performed.During the evaluation, the customer's originally reported issue of knife wire tip broken was confirmed; the coated portion of the cutting wire was torn, and the broken portion was scorched and melted.A review of the device history record found no deviations that could have caused or contributed to the reported issue.It has been less than 1 year since the subject device was manufactured.Based on the results of the investigation as well as past similar investigations, likely mechanisms which caused the cutting wire breakage might include 1.The cutting wire where the wire coating was torn came into contact with the distal end of the endoscope when the forceps elevator was raised, and 2.Under circumstances described above 1, an electric conduction was activated.This may have caused the cutting wire to become hot instantly at the contact point, and as a result, the cutting wire broke.It is also possible that the slider was slightly pushed causing the cutting wire to deflect.The coated portion of the cutting wire had possibly been rubbed due to the effect of contacting a metal area of the endoscope.However, a definitive root cause could not ultimately be identified.This issue is discussed in the instructions for use: - since the cutting wire is very thin, it may break off in the following cases: the distance between the papilla of vater and the cutting wire is very short, the output is too high or activated while the cutting wire touches metal parts of the endoscope, or the cutting wire is tightened too strong.When the cutting wire breaks off, its proximal end will be retracted toward the endoscope if the slider is pulled.If the slider is pushed, the cutting wire will be pushed out toward the papilla or move sideways.If the cutting wire breaks off, stop the output immediately and pull the slider completely to retract the broken cutting wire into the tube.Then withdraw the sphincterotome from the papilla.Otherwise, patient injury, such as perforations, bleeding, or lacerations within the biliary duct, and/or damage of the endoscope could result.- when inserting the instrument into the endoscope, be sure that the cutting wire is parallel to the tube.Otherwise, the metal part of the forceps elevator may contact the cutting wire and peel off the coating material.- do not activate output while tissue is in contact with the torn or damaged coated portion of the distal end.If output is activated while tissue is contacting the torn or damaged coated portion due to insertion into or withdrawal from an endoscope, leakage current, decreased output, and/or thermal injury could result.- if you feel the cutting is blunt, withdraw the device from the scope to examine if there is any peel off and tear at the coating portion.Olympus will continue to monitor the field performance of this device.
Event or Problem Description
An olympus representative reported on behalf of the customer that, during a therapeutic endoscopic sphincterotomy (est), the tip knife wire of their single use 3-lumen sphincterotome v broke, causing sparks to occur.No debris fell off, and the procedure was completed with a replacement similar device.There were no reports of patient or user harm associated with this event.

• 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 036-0 357; JA 036-0357
• Manufacturer Contact: todd brill ; 800 west park drive; westborough, MA 01581 ; 5082077661
• MDR Report Key: 16633010
• Report Number: 9614641-2023-00443
• Device Sequence Number: 20622804
• Product Code: KNS
• UDI-Device Identifier: 04953170184178
• UDI-Public: 04953170184178
• 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): N
• Reporter Type: Manufacturer
• Report Source: Other,Foreign,User Facility,Company Representative,Distributor
• Initial Reporter Occupation: Non-Healthcare Professional
• Type of Report: Initial
• Report Date (Section B): 03/28/2023

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-V431M-0720
• Device Lot Number: 25K
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Date Returned to Manufacturer: 03/05/2023
• Was the Report Sent to FDA?: No
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 02/27/2023
• Initial Report FDA Received Date: 03/28/2023
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• Date Device Manufactured: 05/16/2022
• 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
• Concomitant Medical Products and Therapy/Usage Dates: HIGH FREQUENCY DEVICE (UNKNOWN MODEL)
• Patient Sex: Unknown