(b)(4).Date of manufacture is 02/2018 (month/year) day of month is unknown.Investigation results: initial reporter indicated six devices of the same lot number exhibited the reported sharp edge at the drill hole/perforation.Six devices were returned for investigation.Three were in an open and used condition, the other three were returned unused in the original package.The three opened devices all have different manufacture dates, which indicates they are from different lots and none of them share the same manufacture date / lot number of the products returned in package (all three packaged are from same lot number).The device related to this medwatch report was visually and microscopically investigated.It was determined that this device displayed visible damage, including perforations.Latex examination gloves were used to determine if the perforation has a sharp edge; the glove was not damaged.The lot number of this device was not provided, therefore, review of device history records for this lot number could not be completed.Review of device quality and manufacturing records were checked for the reported lot number (4509784027) and were found to be according to specification valid at the time of production.No similar incidents were reported for this batch number.The damage present on this device may have resulted from improper handling, or may have been caused by another instrument.According to the instructions for use (ifu), the following must be observed: safe handling and preparation: - prior to each use, inspect the product for loose, bent, broken, cracked, worn or fractured components.- do not use the product if it is damaged or defective.Set aside the product if it is damaged.Inspection, maintenance and checks: - repeat cleaning and disinfection of products that still show impurities or contamination - check that the product functions correctly.
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