Introducing the RollControl Rollator
The RollControl rollator is a novel rollator design that better suits the needs of seniors than common rollators on the market. The rollator offers users three unique features: modular handles that allow users to switch between arched and upright positions, adjustable braking force, and resistive wheels that provide a braking force at elevated velocities without impacting normal use.
Adjustable Braking that allows for normal rollator usage even when carrying heavy loads
Resistive Wheels that apply a braking force only at elevated velocities
Modular Handles rotate to allow for use in two different positions depending on user needs
This design is built off the frame of a push-down rollator frame. The most common rollators on the market feature rim brakes similar to those commonly found on bicycles. The user grips the handle which causes a friction brake to contact the rollator wheel, engaging the brake. However, this style of brake becomes difficult to use for users that have poor grip strength. These users could utilize a push-down rollator, where instead of squeezing a handle, the user just needs to lean forward which causes a brake to contact the ground. Users that have good grip strength may also prefer push-down rollators due to the natural movement of leaning forward to brake.
So what's the problem?
Independence is of utmost importance to seniors; it allows them to navigate and overcome the challenges inherent to aging. Some tools that help seniors maintain this independence are mobility aids like walkers and rollators. However, current rollators on the market fail to meet the unique needs of seniors. We identified three such problems and set out to solve them.
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1) Inability to Carry Loads
Current models for push-down rollators fail to account for situations in which rollators are loaded with weight such as groceries or laundry. This is of particular importance in urban environments where seniors will often walk to do grocery shopping and load their groceries on their rollator. Weight on the push-down rollator will cause the brake to engage so it cannot be used normally.
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3) Speed of Rollator Going Downhill
A final problem identified with the rollator is that it can pull users forwards while on steep hills. Gravity causes the rollator to roll faster than the desired speed of the user, potentially pulling them forward and causing them to lose their balance. This is also a problem that affects all rollators in general, not just push down rollators.
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2) Limitations of Handle Positions
A second issue lies in the lack of flexibility that rollators offer for handle positions and posture. This is an issue that affects not only the push-down rollator, but also rollators in general. Most users utilize arched rollators, but prolonged use of arched rollators can lead to the user becoming tired and leaning forward too much. Upright rollators force the user to stand up straight, providing the user with reduced stress and better posture. Currently, all rollators provide only one of these options and do not have the option of switching between the two.
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© 2022 by RollControl under Columbia University in the City of New York