It was reported to midmark that an x-ray unit (preva intraoral dental x-ray system, serial no.(b)(4)) separated from its wall mount in a user facility.No injuries were reported.Visual examination of the wall determined that the root cause was improper installation error.Unit was installed using plywood backing, which is not a permitted condition per manufacturer installation instructions.This mdr is being submitted as part of retrospective complaint review conducted at midmark corporation (lincolnshire, il).Midmark (formerly progeny) began filing mdrs for x-ray units separating from their wall mounts in april 2009 (refer to mdr 1423380-2009-00006).All subsequent incidents involving units fully separating from the wall mount have been submitted to cdrh as mdrs.However, as part of retrospective complaint review, midmark has identified this unreported incident that occurred prior to april 2009 and has decided to report this incident for consistency.
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