It was reported on (b)(6) 2019 in operating room 2, the visum halogen surgical spring arm disengaged while the stryker field service technician (sfst) was providing service for salesforce complaint case (b)(4).There were no reports of any injury or adverse event.The sfst installed a new spring arm noting the spring arm circlip, which secures the spring arm to the horizontal arm of the suspension, was checked with his go-no go gage.The sfst performed functional testing by adding excessive loading on the spring arm.The spring arm disengaged from the suspension and was taken out of service.On 17sep2019 a sfst was dispatched and installed a new spring arm with a new circlip and verified the circlip was properly seated with his go-no go gage.The equipment was returned for investigation.Potential reasons for the failure include the cclip not being properly seated due to excessive loading placed on the spring arm and/or due to misidentification of passing the go-no go gage during the installation process.
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