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The user facility has informed richard wolf medical instruments corporation (rwmic) of an issue, at the start of morcellation during a holmium laser enucleation of the prostate (holep) procedure, the blades were not biting any of the tissue nor sucking the tissue toward the blades.During this time, visualization was poor and lost distension a couple of times and unfortunately nicked the bladder twice.The surgeon aborted the procedure and change to a standard transurethral resection of the prostate (turp) procedure to complete the case.An additional procedure was needed to repair the patient's bladder.Later, the initial reporter clarified that the suction to the canisters was working fine.The blades would not hold or bite the tissue.The operation time was prolonged by 90 minutes due to the surgical staff trying to resolve the issue.
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New information: (medical device problem code, component code, type of investigation, investigation findings, investigation conclusions).The motor control unit 2303, part id: 2303.011, serial # (b)(6)., was inspected in the specialist department and the visual, mechanical and functional aspects were examined.The results of the inspection showed no damage or functional impairments.All functions and installed components work perfectly.However, in the course of the inspection, one of the concomitant devices supplied, suction pump, part id 2208011 with the serial number (b)(6) was examined and identified as the cause of the malfunction.The following defects were found: defective holding part of the solenoid valve, defective solenoid valve, loud running noise during operation.As the suction pump has already been in use for 11 years and no indications can be derived from the repair history, the cause can be attributed to normal wear and tear related to ageing.The suction pump 2208011 serial #(b)(6) was manufactured on 25/apr/2013.No abnormalities were found during production and passed all functional checks.An evaluation of the complaints database of the last 3 years for the suction pump 2208011 revealed 9 complaints including the current complaint.Six of these revealed a design-related cause, which leads to a 3.6% recurrence rate in the same time.This issue was rectified with change request pk21-0013.The ifu ga-a 252 / en / 2012-07 v2.0 / pdg 11-5360 contains several descriptions of visual and functional checks which serve to detect faults prior to use on patient in section 4 checks and section 6 reprocessing and maintenance.In additional, under section 6.4.1 "maintenance intervals" the ifu states to avoid any incidents or damage caused by aging and wear it is necessary to service the product and the accessories at adequate intervals.Depending on the frequency of use, but at least once a year, have an expert check the functional and operational safety of the equipment.The subject issue of ageing failure is present in the risk management file e3-1: suction pumps with accessories, v00.The overall probability of occurrence for this issue remains at previously defined levels and overall risk of the device remains in the acceptable category.
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