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It was indicated that the device will not be returned for evaluation because the device remains implanted; therefore an analysis of the complaint device could not be completed.Because of this, it is not possible to definitively identify the root cause.A thorough review has been completed at the manufacturing facility.No issues were noted during the manufacture that could have contributed to this defect, the manufacture was completed by trained personnel and there have been no incidences of a similar defect since commencement of production of this product.However, trials were completed which have shown that the defect could have occurred if inadequate quantity of adhesive is used.Taking into consideration the evaluation conducted and the details of the complaint, this investigation was assigned the most probable root cause of manufacturing.A complaint with a most probable root cause classification of manufacturing indicates a complaint in which the product fails to meet specification due to the manufacturing process.Corrective and preventive action capa (b)(4) was initiated to investigate this issue.A secondary root cause of user is also assigned to this complaint because the physician did not adhere to the dfu.Warnings were not adhered to because the device was used despite noting the mechanical damage.Additionally, a wound adhesive was used to bond the cuff to the catheter and adhesive was placed circumferentially at either end of the cuff.
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