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Additional information is provided in sections d.9, h.3, h.6 and h.11.30 opened 20 ga v-lance knives with foam protectors in a bag were received for the report of knives didn't cut like they did the previous times.Samples 1-6, 8, 11-15, 18-20,22-25 and 27-30 were visually inspected and found to be nonconforming with damaged cutting edge and/or bent tip.Functional penetration testing could not be performed due to the damage of the samples.Samples 7, 9, 10, 16, 17, 21, 26 were visually inspected and all were found to be conforming.Functional penetration testing was performed and samples were found to be conforming.A review of the device history record traceable to the reported lot numbers, indicates that the reported product was processed and released according to the reported product¿s acceptance criteria.The exact root cause could not be determined from the investigation performed.The damage to the returned samples 1-6,8, 11-15, 18-20, 22-25 and 27-30 are consistent with damage that can occur when the blade contacts a hard surface such as the protective blade tray when product is improperly removed or inserted after use, or improper handling, or contact with another instrument during surgery or set-up.The damage seen on the returned complaint samples could have contributed to the customers reported issue of dull knife.The returned opened samples 7, 9, 10, 16, 17, 21, 26 were found to be visually and functionally conforming, therefore dull blades as described in the complaint was not confirmed and a root cause cannot be determined for the complaint as described by the customer.Samples 7, 9, 10, 16, 17, 21, 26 met specifications.The exact root cause for the damaged knife samples is unknown for samples 1-6, 8, 11-15, 18-20, 22-25 and 27-30 , therefore specific action with regards to this complaint cannot be taken.All knives are 100% inspected by trained operators using a minimum of 10x magnification during manufacturing.Any nonconformance, such as the damaged tip and damaged cutting edge exhibited on the returned opened sample, is removed from the lot and scrapped.Functional penetration testing is performed and monitored during the finishing process to ensure the sharpness of the product.The manufacturer internal reference number is: (b)(4).
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