The customer reported that the service latch was loose and the table was free floating.The philips customer support specialist (css) confirmed there was no harm to a patient, bystander, or operator.The field service engineer (fse) confirmed that the service latch was loose and resecured the wingnut to resolve the issue.
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(b)(4).On (b)(6) 2014, the customer, (b)(6) , alleged that during a clinical procedure, the table top was free floating.The customer informed that the space between the table and the gantry did not look normal, for br 64 728231.There was no report of any harm to the operator, patient or bystander during the incident.The customer contacted the philips help desk to inform them of the issue.The philips field service engineer (fse) was dispatched to the site.The fse arrived at the site and evaluated the system.Fse determined that the service latch was not secured and re·secured the service latch and tightened the wing nut to resolve the issue.No other service latch complaints have been received from the customer after the service latch was re·secured.Fse informed that the service latch might not have been fully engaged after the last service call in december and it worked loose over time.Fse added that it was the old wing nut style and it was replaced with the lock nut style later that can be fully tightened with a wrench instead of finger tight as with the wing nut.After the fse's service, the system is working as specified ct engineering determined that the overall risk is acceptable.Ct engineering also determined that there is a potential for undesired radiation to the patient due to carbon top stops/free floats before scan completed.In such cases, the trained professional may determine if a rescan is necessary.The risk associated with a rescan from a ct scanner is acceptable.A field safety notification (fsn 72800614) was sent to the field on 08-apr-2014 stating that: if the customer experiences a horizontal, free-floating couch motion, they have to contact their field service engineer immediately.A copy of this field safety notice has to be retained with the equipment instructions for use (ifu).Additionally, the service manual is being revised to provide more robust instructions on how to service the patient support.The service manual changes are internal philips documents.There was no part replacement.No root cause could be determined.Based on fse's statement, the fse might not have fully engaged the service latch after the last service call in december and it worked loose over time.
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