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Investigation completed: selenia dimensions: c-arm uncommanded motion and control inserts working intermittently.It was reported that the c-arm control inserts were working intermittently.Additionally, the c-arm continued to move after the technician¿s foot was lifted from the footswitch.The field engineer (fe) was dispatched to the customer site and replaced the control inserts resolving the issue.The fe was unable to find any issues with the footswitch and was unable to confirm the uncommanded motion.No patient injuries were reported.A review of the device history showed this issue has not reoccurred since the parts were replaced.The control inserts were 692 days old at replacements and were not returned for investigation.Based on a review of the complaint, a possible cause of the uncommanded movement is due to an issue with the control inserts.Issues that can lead to uncommanded motion include worn buttons/components, broken connectors and broken slide/rock mounts.Natural wear and tear due to part age could not be ruled out as a contributing factor.The control inserts were not returned therefore further investigation could not be performed.Due to the limited information provided and lack of part return, the root cause of the failure could not be determined.A risk trend was performed and the occurrence calculation was calculated at 2(low).Based on a review of the complaint, a capa is not needed at this time as there was no patient or user harm.Additionally, the risk is considered low based on the occurrence.Future events will be monitored and trended.A review of the complaint history for (b)(6) showed no other complaints for uncommanded c arm motion or control switch issues.Additionally, the complaint review identified the failing control inserts were original to the system therefore, the dhr was reviewed.There were two discrepancies noted in the dhr however none of the discrepancies were related to the control inserts.The dimensions footswitches are not contained within the dimensions dhr therefore, no dhr review could be performed.System product code: sdm-sys-6000-2d; serial number: (b)(6); system manufacture date: 1/13/2022.System installation date: 3/10/2022.Unique device identified (udi): (b)(4).
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