MAUDE Adverse Event Report: AOMORI OLYMPUS CO., LTD. SINGLE USE ELECTROSURGICAL KNIFE KD-650

Model Number	KD-650Q
Medical Device Problem Code	Break (1069)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	11/11/2024
Type of Reportable Event	Malfunction
Additional Manufacturer Narrative
The evaluation of the event is ongoing.Should additional relevant information become available, a supplemental report will be submitted.
Event or Problem Description
It was reported, the single use electrosurgical knife kd-650 tip broke off.The issue occurred, during an unspecified therapeutic procedure.The procedure was completed using a similar device.There were no reports of patient harm.
Additional Manufacturer Narrative
This report is being supplemented to provide additional information based on the legal manufacturer's final investigation and device evaluation.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, the reported event may occur due to the following: 1.Due to the factor described below, spark discharge between the tissue and the cutting knife occurred during output activation.·the output setting for activation was too high ·the electrosurgical unit was used in the coagulation mode.·the output activation time was too long.2.Spark discharge occurred, and the part of the cutting knife became hot instantly.As a result, the strength of the cutting knife decreased.3.During tissue incision, a load was applied to the cutting knife which has the reduced strength.This might have caused the cutting knife to break and further detach.However, since the device was not returned for evaluation, the definitive root cause of the reported issue could not be determined.The event can be detected/prevented by following the instructions for use which state: do not use this instrument and a cord in an output higher than the rated high-frequency voltage in the table on page 5.This could cause patient, operator or assistant injury, such as thermal injury.It could also damage the endoscope, instrument and/or a cord.Olympus will continue to monitor field performance for this device.
Event or Problem Description
The event occurred during an endoscopic submucosal dissection procedure.

• Brand Name: SINGLE USE ELECTROSURGICAL KNIFE KD-650
• Common Device Name: SINGLE USE ELECTROSURGICAL KNIFE
• 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: 20788067
• Report Number: 9614641-2024-02118
• Device Sequence Number: 15201119
• Product Code: KNS
• UDI-Device Identifier: 04953170265778
• UDI-Public: 04953170265778
• Combination Product (Y/N): N
• Initial Reporter Country: CH
• PMA/510(K) Number: K092309
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Serviced by Third Party (Y/N): Unknown
• Reporter Type: Manufacturer
• Report Source: Foreign,User Facility,Company Representative
• Initial Reporter Occupation: Non-Healthcare Professional
• Type of Report: Initial,Followup
• Report Date (Section B): 01/17/2025

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-650Q
• Device Lot Number: 28K
• Was Device Available for Evaluation?: No
• Was the Report Sent to FDA?: No
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 11/11/2024
• Supplement Date Received by Manufacturer: 01/14/2025
• Initial Report FDA Received Date: 11/26/2024
• Supplement Report FDA Received Date: 01/17/2025
• Was Device Evaluated by Manufacturer? (Y/N): No
• 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