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The subject device was returned to olympus medical systems corp.(omsc) for evaluation.The tissue pad of the subject device was severely worn.The coating for electric insulation of the probe was partially missing.The manufacturing record was reviewed and found no irregularities.Based on the past similar cases, it was known that the coating for electric insulation of the probe and the tissue pad were damaged since the user continued to activate output without grasping tissue (including after the tissue already cut).The above device handling has warned in the instruction manual as follows; do not activate output in seal & cut mode 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.
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We received the following report.During an open hepatectomy, the subject device was used.Probe damage error (u504) occurred frequently.When the user checked the device, the user noticed that the tissue pad of the device was worn.The intended procedure was completed with another device.There was no patient injury reported.On august 2, 2019, we found that the following.The tissue pad of the subject device was severely worn.The coating for electric insulation of the probe was partially missing.This is the report regarding the severely worn tissue pad and the missing of the probe coating.
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