Powered wheelchair with docking bracket caused damage to ramp resulting in the catastrophic failure of the ramp while the user was in the chair and on the ramp.It appears that due to low ground clearance, the qlk docking bracket/bolt installed on the bottom of the chair caused rivets within a home entry ramp to shear.The chair and user fell, and the user was briefly disoriented, but sustained no apparent injuries at that time.However the user required assistance in order to get free of the incident site/debris and to reenter the user's home.Fda safety report id# (b)(4).
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