The suspected medical device drill a/o chuck 2,0 mm is not listed/approved in the us, but is similar to the following devices listed/approved in the us: drill 2,5 mm ao.During preparation of an implant, the drill broke off.The broken off end of the drill got stuck so deep in the bone that it could not be removed.The drill which is used is very filigree at 2.0mm.It is guided through the drilling template during drilling.For an unexplained reason, the drill may have jammed and then probably broken during further feed.Removal of the drill would have resulted in severe damage to the bone.After a review of the product and manufacturing documentation, a technical cause that could be due to design or manufacturing problems can be ruled out.The surgical technique and instructions for use have been checked and no errors were found.The occurrence rate is below the accepted threshold.
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