The evaluation revealed all sonicanchors to be the primary products.No deviations were found during review of the manufacturing and inspection documents (dhr).The anchors complained were documented as faultless prior to distribution.During investigation, no material, design or manufacturing related issues were found.The customer reported that the anchors were used on an achilles' tendon repair.This treatment is listed as indication within the ifu and operative technique.It was reported further that 6 anchors were used, one of them was implanted like specified, an indication that the one anchor was liquefied like specified.5 anchors were implanted but popped out of the drilled holes during wire-strength test with origin shape; indicating that all 5 anchors were completely inserted into the bone holes but did not liquefy.The handpiece and generator were checked and tested several times, indicating that both machines were fully operational.Based on all reported facts two possible reasons would have led to the issue: first: the cancellous bone structure was too weak to give enough resistance; the anchors were pushed forwards through the cancellous structure.Second: it was drilled too deep >6mm.The drill is designed with a stop but with excessive pressure it is possible to break through the corticalis in case of weak bone structure.Both possible reasons are caused by weak bone structures.The ifu and operative technique includes that prior to the surgery the surgeon has to check whether the bone quality is adequate to guarantee a sufficient anchor implantation.Because no manufacturing or material issue was detected the case is attributed to an inaccurate pre-planning by the surgeon.Review of complaint history, capa databases and risk analysis did not identify any discrepancies.There are no open actions in place related to the reported event for the subject product(s).No non-conformity was identified.
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