[inspection of the actual device] fujifilm inspected the subject endoscope at the local service center.A white foreign substance was stuck in the water jet nozzle at the distal end of the endoscope, and the "double water stream" pointed out by the facility could be reproduced.[consideration of health hazards] it is unknown at what point in the endoscopy process the white foreign substance that was clogging the water jet nozzle was present in the channel of the endoscope.The possibility that it existed during or before the reprocessing process prior to the subject procedure cannot be denied.Therefore, the possibility of cross-infection due to inadequate reprocessing cannot be ruled out.The facility also indicated that the water supplying caused non-serious injury to the patient's gastrointestinal wall.Depending on the setting of the water supply device and the patient's condition (e.G., if the digestive tract wall is more fragile than usual), water delivered through the water jet nozzle may cause minor damage or bleeding.In this subject procedure, it is also possible that a foreign substance clogged the water jet nozzle and narrowed the water jet outlet, causing a flow of water with higher-than-normal water pressure to flow out.In any case, however, there is no risk of perforation or other serious injury resulting from the water flow from the water jet nozzle.[consideration of the cause] it was difficult to determine at what point in the endoscopy process the white foreign object that was clogging the water jet nozzle was present in the channel of the subject endoscope, and the cause could not be identified.
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