A “No Fall” Cane - Stanford Universityweb.stanford.edu/class/engr110/2011/Cane.pdf · The Cane...
Transcript of A “No Fall” Cane - Stanford Universityweb.stanford.edu/class/engr110/2011/Cane.pdf · The Cane...
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MagiCaneA “No-Fall” Cane
Ernestine FuReyna Garcia
Sarah Toukan
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Team “We Cane Do It!”
Team: Mentor Robin Tobias, Ernestine Fu, Reyna Garia, Sarah Toukan
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Abstract
We were tasked with designing a solution to the falling cane problem
We considered two potential solution paradigms:
Modifying the cane
Modifying the environment
Based on our research, we learned what solution paradigm users preferred in different scenarios
Including interviews w/ cane users
We had several prototype iterations and are looking at better manufacturability options
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Project Goal
to explore designs for
a normal, one-pointed cane
that does not fall over.
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What is the Cane?
Dictionary Definition
Sugar cane.
A rod used for flogging.
A stick used as an aid in walking or carried as an accessory.
Users:
Individuals, especially older adults, with gait disturbances, balance disorders, joint replacements
Need assistive devices such as walkers or canes to provide stability while walking, standing, sitting down, and getting up
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The Cane Problem
Cane falls, but people who use canes are not often able to bend over safely to pick them up.
Situations where this occurs:
Something trips the cane over
Lean the cane against something and it falls (our focus)
Magnitude of problem:
Affects 100% of cane users with varying frequency
Hazard for individuals surrounding cane user
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MagiCane Product Goals(based upon interviews)
Lightweight: Lightweight aluminum canes are most popular now.
Simple: Something that you would do relatively automatically; seniors do not want another thing to have to remember doing.
Discreet: Don't want something that's too conspicuous.
Affordable: Seniors would probably only spend a couple dollars more for a cane that doesn't fall over.
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Existing Solutions
Quad cane
Cane wrist straps
Cane clips
Cane magnets
"No Fall” walking safety cane
Weighted cane
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Existing Solutions: Quad Cane
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Existing Solutions: Cane Magnets
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Existing Solutions: Wrist Straps
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Existing Solutions: Cane Clips
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Existing Solutions: "No Fall” Walking Safety Cane
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Existing Solutions: Self-Balancing Staff
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Things Considered When Designing
Stable bases are a big plus
People walk with cane on opposite side of that which needs most support
Must take into account wide range of user dexterity
Aesthetics are important
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Approaches to the Problem
1. Modifying the cane
Situations in which modifying the cane would help solve the problem
2. Modifying the environment
Situations in which modifying the environment would help solve the problem
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Preliminary Brainstorming
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Potential Ideas to Pursue
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Solutions to Modifying the Environment
Modifications to the user’s familiar environment(s)
should take into accountindividual routines,
preferences, and abilities.
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Solutions to Modifying the Environment
Portable Pins & Suction Cups
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Solutions to Modifying the Environment
Magnets & Velcro
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Solutions to Modifying the Environment
Clips & Holders
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Solutions to Modifying the Environment - Prototyping
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Solutions to Modifying the Environment - User Feedback
Users wouldn't install fixtures in their homes; they'd use available nooks and crannies
Some users would consider carrying a removable cane fixture in their purses/pockets if it
was light
Users would use fixtures available in public places (restaurant, cinema, etc.)
All users said they would love a comprehensive solution - a modified cane
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Solutions to Modifying the Cane
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Solutions to Modifying the Cane
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Solutions to Modifying the Cane
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Solutions to Modifying the Cane
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Solutions to Modifying the Cane - Prototyping
Trickier than we expected!
We wanted an idea of dimensions and possible issues concerning our design.
Take-away points:
One retractable leg wouldn't be enough to steady the cane
A mechanism is needed to keep the leg from sliding all the way out (spring or other)
Gravity isn't a convenient trigger for the mechanism
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Solutions to Modifying the Cane - Mechanism
In coming up with a mechanism, we tried to incorporate:
As many standard parts as possible
Lightweight parts
Inexpensive parts – by using mechanical principles
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Solutions to Modifying the Cane – CAD Model
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Solutions to Modifying the Cane – Talking to Vendors
We compiled the following list of prototype vendors to approach:
Plastic Resource GroupRealize Inc.
Ricman Manufacturing Inc.
CK Tool Company, Inc
Focus Product Design and ManufacturingAdvanced prototype Engineering LLC
We have already contacted a couple of vendors who seem receptive and willing to advise us on product.
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What We’ve Achieved
Needfinding:
Interviewed users and others
Researched existing solutions
Studied environments
List of design specs
Brainstorming:
Started wide, narrowed down
Two-pronged approach
Prototyping:
Sketches
Quick and dirty proof-of-concept prototypes
Higher resolution prototyping:
Engage with vendors
User Feedback:
Field testing
Assess functionality, aesthetics and comfort
Have yet to do this for modified cane
Iteration and manufacturing