It was reported that after the registration of the femur in a cori assisted tka surgery, an error message was displayed noting that the real intelligence robotic drill was disconnected.After they reset a few times they completed the procedure with manual instrumentation without significant delays.The patient was not harmed beyond the reported problem.Additionally, it was impossible to disconnect the ri robotic drill attachment from the drill.They tried to reset and start a new case, but it did not help; they also cleaned the end of the drill and the connection in the console.The root cause of this issue is an out-of-specification nut on the drill attachment, which makes it a reportable event.
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H3, h6: the ri robotic drill attachment, part number rob10015, serial number (b)(6), used for treatment was returned for evaluation.A relationship between the reported event and the device could not be established.The reported problem could not be confirmed with a visual inspection.The exterior condition shows minor wear (scratches, scuffs).The reported problem was not visually confirmed.The reported problem was not confirmed with a functional evaluation.Drill attachment was able to engage and disengage from a known-good drill without any issues.A complaint history review for similar reported/confirmed complaints has identified prior events.A review of manufacturing records indicate the device met all specifications upon release into distribution.The real intelligence cori for knee arthroplasty user manual (500230 rev d) provides guidelines for recovering to a fully manual procedure in the "recovery procedure guidelines, appendix d".The failure mode and associated risk have been anticipated within the risk file and the documented risk level is still within the product risk profile.A historical review concluded that no prior escalation actions are applicable to the scope of the reported complaint.Although the reported problem was not confirmed through a visual or functional evaluation, factors contributing to the reported symptom may have been associated with a loose drill attachment retaining nut.Based on the investigation, the need for a corrective action is not recommended or required at this time.Should any additional information be received the complaint will be reopened.The failure mode will continue to be closely monitored through complaint investigation and trended through post market surveillance activities.
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