I purchased a medline premium rollator wheeled walker for my (b)(6) yo mother.After assembly following all enclosed instructions for use, i discovered that if the user sits on the device as instructed, it results in a very unstable seating position that could easily result in a potentially fatal head injury from backwards fall.There are four wheels on the device, two of which are caster-type to allow turning.If the user comes to a stop, engages the brakes, then sits down on the seat, the user's center of gravity is outside the four wheels.This results in a tipping hazard, and the user will fall backwards, resulting head injury.To mitigate this risk, the user should first come to a stop, then pull the device backward until the front caster wheels turn 180-degrees around, then engage brakes, then sit.This results in the user's center of gravity falling within the footprint of the four wheels -- a much more stable sitting position.Fda safety report id# (b)(4).
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