It was reported that, during a cori assisted tka procedure, the navio flat markers were not able to be seen, they were switched out for new ones, as the entire array was not showing up on the screen.The procedure was resumed, after a significant delay.Patient was not harmed as consequence of this problem.
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H3, h6: the navio flat markers, part number pfsdv0016, lot number unknown, intended for treatment was not returned for evaluation, therefore a device analysis was unable to be performed.A complaint history review for similar reported/confirmed complaints has identified prior events.While all products meet required manufacturing specifications prior to release a serial number, lot number, part revision or software version is required to link the device to a dhr or nc investigation.The failure mode and associated risk have been anticipated within the risk file and the documented risk level is still adequate.A historical escalation event review was completed.The review determined that prior escalation actions are applicable to the lot or part number and scope of this complaint and no further escalation action is required.According to document (b)(4), assy, flat marker, v-4000, navio rev a, states to place disk on the inner surface of top with reflective gray side facing up.We do have reason to suspect that the product failed to meet any product specifications at the time of manufacture.Although the reported problem was not confirmed through a visual or functional evaluation, factors contributing to the reported symptom may have been associated with flat marker reflective material assembled with the reflective material flipped/upside down.As part of corrective action, continuous improvements have been made to the assembly process.The assembly work instruction will be updated to include a visual check using an infrared camera system that the operators can reference to confirm the reflective material is oriented correctly during flat marker assembly.The failure mode will continue to be monitored through complaint investigation and trended through post market surveillance activities.
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