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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.Although the specific day is unknown, the subject device was manufactured in august 2020.Based on the results of the investigation, the root cause could not be determined.However, it is likely that the probe broke because of contact with other surgical instruments, or non-insulated areas as described in the following mechanisms.Mechanism #1: 1.Ultrasonic output was activated while grasping a tissue with the tip of the grasping section.The tissue pad encountered the probe.As a result, the pad was worn away.2.The tissue pad was worn away, causing the grasping section to touch the probe.3.Ultrasonic output was activated under this situation, and scratches (indicating that the probe and grasping section were in contact with each other) were made.4.The probe received an output load in ultrasonic mode or received a load when grasping tissue.As a result, the probe cracked from the scratch.5.The probe broke when the load was added.Mechanism #2: 1.During output in ultrasonic, the probe encountered metal or a surgical instrument.A scratch was made on the probe.2.The probe received an output load (in ultrasonic) or received a load when grasping tissue.As a result, the probe cracked from the scratch.3.The probe broke when the load was added.Furthermore, there was no problem due to an abnormality or deficiency in the product.Per the information obtained, the facility reprocessed and reused this single-use device.However, the olympus instruction manual states that this product is a disposable product, and that reuse is prohibited.The event can be detected/prevented by following the instructions for use (ifu) which state: ¿the sonicbeat instrument should be used for soft tissue.Do not activate output while grasping hard tissue such as bone or highly calcified tissue, or hard objects such as metal clips, stapler, or other instruments (e.G., uterine manipulator, forceps, and others).Otherwise, it may cause the probe tip to be scratched or come into direct contact with the metal area of the grasping section as the heat generated by the friction between the hard object and the probe tip could cause wear/deforming/split/protruding/partial separating of the tissue pad.In turn, the probe may break before displaying an error window or generating an alarm tone.¿ ¿do not grasp or let the probe tip contact hard objects such as metal clips, stapler, or other instruments (e.G., uterine manipulator).Also, be careful to avoid contacting the probe tip with those accidentally.Particularly during activation, a scratch on the probe tip could occur due to ultrasonic vibration, which leads the probe tip to break and fall off into the body cavity.¿ ¿do not activate output while the grasping section is closed without contacting tissue or vessel or ensuring that tissue is transected.Otherwise, a local increase of the temperature due to a friction between the probe tip and the grasping section may result in various forms of damage in the probe tip and/or the tissue pad, such as premature wear, breakage, deformation, and/or falling off inside the body cavity and/or partial separating.¿ ¿when cutting or vessel sealing is performed, apply light tension on the tissue so that users can confirm that they are transected.Also, stop activation immediately after tissue is transected.Otherwise, the grasping section, the tissue pad, or the probe tip may break and fall off, and partial separating of the tissue pad may occur due to a local increase of temperature caused by the friction between tissue pad and the probe tip during activation.¿ ¿the sonicbeat instrument is a sterile single use item.Do not reuse or attempt to sterilize.Reusing or using after resterilization, poses an infection control risk, a product performance risk, and can damage the sonicbeat instrument.¿ olympus will continue to monitor field performance for this device.
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