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The subject device was not returned to olympus medical systems corp.(omsc) for evaluation.Therefore, the exact cause of the reported event could not be conclusively determined.According to the attached file (the photo), the probe was broken off.The manufacturing record was reviewed and found no irregularities.Based on the past similar cases, it was known that the event occurred due to any of the following possible causes.*the probe was cracked when the user activated output contacting with metal or something hard object such as metal clips, stapler, or other instruments, besides the probe was broken off when the probe was subjected to a load.*the tissue pad was damaged since the user continued to activate output without grasping tissue (including after the tissue already cut).Also, it was known that the probe was cracked when the user kept activating output of the device with the worn pad, which caused contacting between the probe and the non-insulated area of the grasping section, and besides the probe was broken off when the probe was subjected to a load.The above device handling has warned in the instruction manual as follows.*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.In addition, the high-frequency (rf bipolar) current flows through the metal and generates spark discharge, which may cause burns and decrease functionalities.*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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During a colectomy, the subject device was used.After 30 minutes of the start of the procedure, the probe of the subject device was broken off and fell inside the patient.The fragment was retrieved.The intended procedure was completed with another device.There was no patient injury reported.This is the report regarding the breakage of the probe.
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