MAUDE Adverse Event Report: ETHICON ENDO-SURGERY, LLC. HARMONIC ACE; INSTRUMENT, ULTRASONIC SURGICAL

Catalog Number	HARH23
Medical Device Problem Code	Difficult or Delayed Activation (2577)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	04/13/2026
Type of Reportable Event	Malfunction
Event or Problem Description
It was reported that during a radical thyroidectomy procedure the device could not be activated.Changed to another device to complete surgery.There was no patient consequence reported.No additional information can be provided.
Additional Manufacturer Narrative
(b)(4).Date sent: 6/1/2026.D4 batch#: a9889w.Investigation summary: the product was returned for evaluation.Visual inspection and functional testing were conducted on the returned device.Visual analysis of the returned sample determined that the device was returned with the tissue pad detached and not returned.The blade tip was damaged; however, the blade was not cracked.The device was connected to the energy system and the device did activate during functional testing.The device was disassembled to verify the condition of the internal components and no anomalies were found.Based on the condition of the tissue pad, a probable cause of this damage is that the clamp of the device may have been closed and the instrument activated without tissue present.Care should be taken not to apply pressure between the instrument blade and tissue pad without having tissue between them.Keep the clamp arm open when back cutting or while the blade is active without tissue between the blade and tissue pad to avoid damage to the tissue pad.The resulting damage contributes to the removal of the pad from the clamp arm.The cleaning of the pad, not in accordance with the ifu, can also result in removal of the pad during use.Probable causes of the blade damage are applying pressure between the instrument blade and tissue pad without having tissue between them, subsequent activations would completely wear and melt the tissue pad until the blade tip makes contact with the clamp arm.Avoid activating the blade without tissue between the blade and tissue pad to prevent this type of damage.As part of the quality process, all devices are manufactured, inspected, and released to approved specifications.A manufacturing record evaluation was performed for the finished device batch/lot a9889w, and no non-conformances were identified.

• Brand Name: HARMONIC ACE
• Common Device Name: INSTRUMENT, ULTRASONIC SURGICAL
• Manufacturer (Section D): ETHICON ENDO-SURGERY, LLC.; 475 calle c; guaynabo 00969 ; * 00969
• Manufacturer (Section G): ETHICON ENDO-SURGERY, LLC.; 475 calle c; guaynabo 00969 ; * 00969
• Manufacturer Contact: orla o'mahony ; 475 calle c; guaynabo ; * ; 3035526892
• MDR Report Key: 25354068
• Report Number: 3005075853-2026-04109
• Device Sequence Number: 13253468
• Product Code: LFL
• UDI-Device Identifier: 10705036014676
• UDI-Public: (01)10705036014676(17)300531(10)A9889W
• Combination Product (Y/N): N
• Initial Reporter Country: CH
• PMA/510(K) Number: K132612
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Serviced by Third Party (Y/N): Unknown
• Reporter Type: Manufacturer
• Report Source: Foreign,Company Representative
• Initial Reporter Occupation: Other
• Type of Report: Initial
• Report Date (Section B): 06/01/2026

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 Catalogue Number: HARH23
• Device Lot Number: A9889W
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Date Returned to Manufacturer: 05/07/2026
• Type of Report(Section G): Initial
• Initial Date Received by Manufacturer: 05/12/2026
• Initial Report FDA Received Date: 06/01/2026
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• Date Device Manufactured: 06/19/2025
• 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: Unknown
• Patient Sequence Number: 1
• Patient Sex: Unknown