This report is being supplemented to provide additional information based on the legal manufacturer's final investigation.The following sections were updated: d8, g3, g6, h2, h4, h6, h10.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, it is likely the insertion unit tip was missing due to an external force applied.The following is stated in the instructions for use and can prevent the event: "do not hit, stretch, twist, drop, or bend excessively the distal end, insertion section, or connector section of the ultrasonic probe.Otherwise, the equipment may be damaged, causing an injury in the body cavity, burns, bleeding, perforation, or detachment of parts.".
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