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This report is being supplemented to provide additional information based on the legal manufacturer's final investigation.The investigation did not confirm the reported product problem as the subject device was discarded by the user facility.A review of the device history record (dhr) could not be performed as the lot number was not provided.However, a dhr for the same device type, for the year prior to the event, was performed.This dhr review found no abnormalities with respect to the clipping and assembly status; both aspects related to the reported event.A definitive root cause for the reported product problem was not established.However, based on review of similar complaints in the past, it was probable that the issue occurred according to the following mechanism: 1 - the shape and angle of the scope was rigid.2- due to the rigid shape, the sliding resistance between the operation wire and the coil sheath increased.3- due to the increased sliding resistance, the force was not transmitted to the tip side, and the slider could not be pulled until the connecting rod broke.4- the clip could not be released because the connecting rod did not break.The occurrence of the reported incident can be prevented by adhering to the instructions for use (ifu), which state the following: · do not pull out the rotary clip device until it hits the slider of this product and clipping is not completed.It may lead to perforation, major bleeding, mucous membrane damage, etc.-do not pull out the rotary clip device until it hits the slider of this product and clipping is not completed.It may lead to perforation, major bleeding, mucous membrane damage, etc.· do not pull the slider of this product until it hits the end, and do not operate the angle of the endoscope before clipping is completed.It may lead to perforation, major bleeding, mucous membrane damage, etc.-do not pull the slider of this product until it hits the end, and do not operate the angle of the endoscope before clipping is completed.It may lead to perforation, major bleeding, mucous membrane damage, etc.· if the clip does not come off from the rotating clip device, do not forcibly pull out the sheath.It may lead to perforation, major bleeding, mucous membrane damage, etc.-if the clip does not come off from the rotating clip device, do not forcibly pull out the sheath.It may lead to perforation, major bleeding, mucous membrane damage, etc.· this product is intended to be used only when surgical operations are possible as an emergency measure.In the unlikely event that the clip does not come off the rotating clip device, see "chapter 4 emergency actions".-this product is intended to be used only when surgical operations are possible as an emergency measure.In the unlikely event that the clip does not come off the rotating clip device, see "chapter 4 emergency actions".· do not press the clip too much against the desired tissue.The intended performance may not be achieved, such as the clip being deformed and not closing completely.-do not press the clip too much against the desired tissue.The intended performance may not be achieved, such as the clip being deformed and not closing completely.¿ olympus will continue to monitor field performance for this device.
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