This report is being submitted as follow up no.1 to update the device return date in section d9, update section h3, and to provide the completed investigation results.It was initially reported the actual device was available for evaluation; however, it was confirmed that the device was not available.The actual device was not returned; therefore, an evaluation of the actual device was unable to be conducted.A picture of the actual sample was provided.Review of the picture revealed that the distal section had been cut at two points; however, the details of the cut shape could not be observed.Review of the manufacturing record of the involved product code/lot# combination confirmed that there was not any problem in the assembling process such as equipment failure.No anomaly was recorded in the results of the dimensional inspection and visual inspection, which were performed after the assembling process.Based on the past reproductive test result, it is known that the same product-type catheter may be cut at two points when it is inserted in a diagnostic catheter with a two-way stopcock and the two-way stopcock is turned.Ifu states: if any resistance is felt, do not remove the micro catheter system by force.Withdraw the catheter carefully together with the guiding catheter.Removing the catheter by force may result in the catheter breakage/separation, which may necessitate retrieval.If the guiding catheter is fitted with a stopcock, do not close the stopcock with the catheter inside the guiding catheter.The catheter may be broken.It is likely that the tip of the actual sample may have been trapped for some reason, and then an excessive tensile load was applied to the actual sample in that trapped state, leading to the cut of the catheter; while the actual sample was inserted in an involved device with a two-way stopcock, the two-way stopcock may have been manipulated.Due to this, the actual sample may have been pinched with resultant cut of the catheter.However, with no return of the actual device, the exact cause of the reported event cannot be definitively determined based on the available information.
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