It was reported that, during a cori-assisted tka procedure, the burr over-resected the distal femur.Surgeon pulled the handpiece away to investigate and the burr was extended out of the drill guard by about 3mm.Surgery was completed after a non-significant delay, with a back-up device.Patient was not harmed beyond the reported problem.
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H10: additional information in d9 and d10.H3, h6.The real intelligence robotic drill, part number rob10013, serial number (b)(6), used for treatment, was returned for evaluation.The reported problem could not be confirmed with a visual inspection.The reported problem was not confirmed with a functional evaluation.The drill passed all diagnostic tests with both the provided drill attachment and a lab drill attachment.Validation was performed by setting the exposure extension to multiple positions and measuring against the drill guard, and the drill exposed properly.A test case was run to the cut stages, and the burr appeared to be extending appropriately as compared to the virtual representation on screen.A review of the log files showed that multiple calibration verification errors happened during the case.No other errors affecting the drill occurred.A relationship between the reported event and the device could not be established.Although the reported problem was not confirmed through a visual or functional evaluation, factors contributing to the reported symptom may have been associated with improper loading of the burr during case setup.The clinical/medical investigation concluded that the patient impact beyond the reported over-resected distal femur, use of a backup device with a change from original plan, and the 0-30 minute surgical delay cannot be determined, but the current health status is reported as ¿healthy¿.Refer to the real intelligence cori for knee arthroplasty user manual, section loading the burr for proper set up and handling, including pressing and turning the burr into the drill until a click is heard/felt.A review of manufacturing and service records indicate the device met all specifications upon release into distribution.A complaint history review for similar reported/confirmed complaints has identified prior events.A historical review concluded that no prior escalation actions are applicable to the scope of the reported complaint.The failure mode and associated risk have been anticipated within the risk file.The risk level is still adequate.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.H11: corrected information in h6 (health effect - clinical code and health effect - impact code).
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