MAUDE Adverse Event Report: AOMORI OLYMPUS CO., LTD. THUNDERBEAT 5 MM, 35 CM, FRONT-ACTUATED GRIP TYPE S; Electrosurgical, Cutting & Coagulation & Accessories

Model Number	TB-0535FCS
Medical Device Problem Code	Fracture (1260)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	02/24/2026
Type of Reportable Event	Malfunction
Additional Manufacturer Narrative
The device evaluation is ongoing.Should additional relevant information become available, a supplemental report will be submitted.
Event or Problem Description
It was reported the thunderbeat surgical instrument's forceps component detached and fell off within intraperitoneal cavity during a hysterectomy procedure.The fragment was retrieved, the device was replaced with a similar device, and the procedure was completed.There was no patient injury or medical intervention associated with this event.
Additional Manufacturer Narrative
This report is being supplemented to provide additional information based on the approved 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, and since the device was not returned for evaluation, the definitive root cause of the reported issue could not be determined.Olympus will continue to monitor field performance for this device.
Event or Problem Description
No additional information received from customer.

• Brand Name: THUNDERBEAT 5 MM, 35 CM, FRONT-ACTUATED GRIP TYPE S
• Common Device Name: Electrosurgical, Cutting & Coagulation & Accessories
• 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: 24651450
• Report Number: 9614641-2026-00305
• Device Sequence Number: 13210705
• Product Code: GEI
• UDI-Device Identifier: 04953170383557
• UDI-Public: 04953170383557
• Combination Product (Y/N): N
• Initial Reporter Country: US
• PMA/510(K) Number: K211838
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Serviced by Third Party (Y/N): N
• Reporter Type: Manufacturer
• Report Source: Foreign,Health Professional,User Facility
• Remedial Action: Recall
• Type of Report: Initial,Followup,Followup
• Report Date (Section B): 08/11/2026

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: TB-0535FCS
• Device Lot Number: 4XK08
• Was Device Available for Evaluation?: Yes
• Date Returned to Manufacturer: 07/31/2026
• Is the Reporter a Health Professional?: No
• Was the Report Sent to FDA?: No
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 02/24/2026
• Supplement Date Received by Manufacturer: 04/07/2026; 08/02/2026
• Initial Report FDA Received Date: 03/20/2026
• Supplement Report FDA Received Date: 04/30/2026; 08/11/2026
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• Date Device Manufactured: 10/08/2024
• 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
• If action reported to FDA under 21 USC 360i(g), list FDA-assigned Recall Number or include a statement: 3003995201-12/08/2025-00
• Patient Sequence Number: 1
• Patient Sex: Unknown