2.009 + The Universal Design File = Mobilishield!

November 7th, 2016

This term I have learned about designing assistive technology in both PPAT and 2.009. My 2.009 team decided to pursue Mobilishield, a compact, automated cover for power wheelchair users to deploy in the rain, for our final product.

While reading the Universal Design File I could not help but see the principles outlined in the text parallel the thought process we have applied them to our work thus far in the design of Mobilishield.

Principle One: Equitable Use– Mobilishield’s size and mounting mechanism will allow it to be used with any power wheelchair using a rod clamping mechanism on the side of the chair.

Principle Two: Flexibility in Use– The switch that is used to deploy Mobilishield utilizes a bust modular architecture, meaning it is easy to interface a different switch with the main enclosure if the user prefers to deploy the device using a body part other than the finger.

Principle Three: Simple and Intuitive Use– In order to deploy and retract Mobilishield, only one press of a button is required.

Principle Four: Perceptible Information– The switch’s form factor will differentiate it from the other buttons found on power wheelchair control panels.

Principle Five: Tolerance for Error– Mobilishield will be mounted on the chair adjacent to the top of the headrest with the necessary clearance to ensure the canopy is deployed above the user’s head regardless of his or her height.

Principle Six: Low Physical Effort– We have designed the switch to activate the device to require less than 0.5 N of force to operate, minimizing user fatigue.

Principle Seven: Size and Space for Approach and Use– The switch can be placed in a custom location on each chair to ensure the user can reach it repeatedly.

These principles will continue to guide us as we work on Mobilishield this semester!

Assistive Technology Designed? That’s Only Half the Battle.

October 26th, 2016

At the beginning of the course, we discussed models like CMOP and HAAT, which are used to better understand people with disabilities and their interactions with assistive technology.  While they seemed more like abstract concepts initially, I have developed a greater appreciation of these models now that I have started to apply them to my project because they help avoid the temptation of engineering in a vacuum.

Designing assistive technologies is not about solving a problem, but rather about helping a person.  No matter how ingenious a solution might be from a technical perspective, ultimately, if the user does not like the solution and cannot be convinced to use it, the solution needs work and should not be presented as the final product.  It is therefore important to understand the intended users and their needs and preferences.

For my project this semester, we are working to alleviate the inconvenience of using a traditional TV remote for a client with MS.  When we started, my partners and I immediately began exploring the design space and discussing solution tradeoffs from a technical perspective.  Then one day, our mentor shared with us some surprising news: our client was not even sure whether her problem of an inconvenient TV remote was “legitimate.”  Subsequent discussion helped convince her otherwise, but had we never talked with her about the importance of our project, no solution that we designed may have ever been that appealing.

We may have had a good understanding of the activity and the assistive technologies involved, but the understanding of our client was incomplete.  It was only through a more balanced understanding of all HAAT model components that has allowed us to pursue a more meaningful dialogue with our client that has greatly aided our design process.

2.009 + Assistive Technology

October 26th, 2016

Coincidentally the work that I am doing in 2.009 is around assistive technology as well. We are trying to design a better set of crutches for users to use, especially for going up and down stairs. We interviewed a variety of different users about their experiences for going up and down the stairs in order to get a better feel. While there is an official way, as shown here, http://www.upmc.com/patients-visitors/education/rehab/Pages/stair-climbing-with-crutches.aspx. Users don’t use it that way because 1. they aren’t taught that when they get the crutches, 2. it is not that much better than the normal way.

We found out from speaking with users and actually using the crutches ourselves some issues about using crutches to go up and down. We learned that you tend to lean forward/in the direction of where you are going when you go up and down to the stairs.  This shifts your center of mass forwards and creates instability, increasing the likelihood you’ll fall. We took these results to the drawing boards and created a set of designs that added an other contact to the crutches. An extra horizontal limp that expands perpendicularly from the crutches allow the users. We also took inspiration from para-olympic runner prosthesis that absorbs force into another one of the designs.

The results were promising, we took the design and ask users to use it, and they felt a lot more safe using our prototype for going down the stairs than normal crutches. There was not any discernible differences for going up the stairs.  Currently, we only have a prototype and not a full fledge product. We hope to do more user testing as we move forward. I’ve been able to mix some of the stuff I learned in PPAT into 2.009 as well, which is great.

 

Assistive Technology in India

October 18th, 2016

Last week we had a guest lecture that was really interesting to me about the design of low cost wheelchairs that could be used in developing countries. I found the concept of disruptive technology fascinating in its ingenuity and also usefulness to people that could not afford current technology.

The talk got me interested in assistive technology in India; my parents are from there and I have visited plenty of times, but I have never really thought about the struggles that differently abled people may face in a country that historically has not been accepting of these differences.

Reading some of the articles that can be found online, it seems that one of the biggest challenges to AT in India is simply the fact that people with disabilities 1) don’t know that the technology exists and 2) are not properly trained in its use. Thus, it’s an interesting scenario wherein developing new, cheaper AT is great, but it’s not really doing much if people don’t know it exists in the first place.

Another point I stumbled upon is that the economics of AT are not financially attractive in India (or most places for that matter) but India specifically lacks the necessary policy to support its development. In the US we have a couple different established government programs to foster the acceptance of people with disabilities and also push for assistive technology development. India, on the other hand, is still slightly behind in this area. I would be really interested to see if you could find a class like PPAT at a school like IIT.

My Wheelchair Experience around MIT

September 27th, 2016

They say that you never know what an experience is like until you have experienced it yourself.  That could not be anymore true in the context of people with disabilities.  Two weeks ago, I was tasked with navigating around MIT in a wheelchair, and as someone who relies on his legs everyday to get to class, this experience could not be any more surreal.

As my brain began to comprehend that I could not use my legs, my other senses became significantly heightened.  Even the slightest bump in a sidewalk would freak me out.  Never had the sidewalks around MIT’s campus seemed so jagged and uneven.  On several occasions, my wheels got caught in the crevices, and I could not move, which was even more nerve-wracking considering that one such instance was in the middle of an intersection!

Ramps were a rather unexpected obstacle.  I had always assumed that ramps were a useful mechanism to make buildings more accessible to people with wheelchairs.  However, I did not fully appreciate the physical effort required to ascend these ramps.  The inclines were sometimes too steep, and I had no choice but to pull myself up awkwardly by the rail, which was even more exhausting for my already tired arms.

Although there were many frustrating physical obstacles, the shining point was the people.  Nobody seemed to treat me differently because of my wheelchair, and many were quick to assist when needed.  One even became quite distraught when she saw how much I was struggling.  Nevertheless, while MIT has such a supportive community for people with disabilities, my experience impressed upon me how much work is still needed before MIT is fully accessible to those with wheelchairs, and I hope my experience and that of others will impel greater action to mitigate this situation.

The Occupational Therapy Lens: Three Things to Keep in Mind

December 7th, 2015

Creating Assistive Technology for Clients with Disabilities:

The Occupational Therapy Lens: Three Things to Keep in Mind 

 

Over the past few months, I have had the unique opportunity to collaborate with clients and engineering students to develop assistive technologies. During this experience, I have witnessed the different strengths that an interprofessional team brings to the design process. Below are three useful tips from the occupational therapy perspective.

By Gina Khalid, Occupational Therapy Student – MGH Institute of Health Professions

 

  1. Ask questions and listen

When creating assistive technologies (AT) for your clients, chances are that you and your team have many questions. But what is the most effective way to ask good questions, while also allowing your clients to be heard? A common technique used in occupational therapy practice is motivational interviewing, often explained using the acronym “OARS”.

  • Ask Open-ended questions that help your client talk and share, rather than answer “yes” or “no” (e.g., “what does a typical day look like for you?”)
  • Make Affirmations by recognizing your client’s strengths
  • Practice Reflective listening (e.g., “that seems difficult for you”)
  • Summarize key elements of the conversation

 

  1. Get your clients involved

Designing AT for your clients is an exciting and rewarding experience, and it should come as no surprise that your clients want to be a part of the process. Sometimes their enthusiasm may interrupt the fabrication process, but remember, your clients are the experts in their disability and their input regarding the AT is valuable. In the end, your clients are the ones using the AT firsthand, so get them involved and ideate together!

 

  1. Consider the environment

It is really easy to overlook the environment and solely focus on the task at hand. Often, AT teams are so focused (rightly so) on prototype testing, materials selection, and software that the broader context can get lost. Although the client is a part of several environments (e.g., built, natural, social, and cultural), the physical environment is the most relevant to AT. Here are a few questions to consider:

  • Where will the client primarily be using the AT device?
  • Are there other spaces in which the client may potentially use the AT device?
  • Will the AT device be able to adapt to different environmental conditions?
  • How seamlessly can the AT device be transported between environments?

 

Integrating these simple tips into your AT design process will not only help build rapport with your clients, but will ensure that the AT you create makes a meaningful difference in the lives of your clients.

 

Problem Solving

November 30th, 2015

This semester, I learned how to use a combination of engineering and creativity skills to create a device to assist an individual with low vision. Throughout the past few months, our team has considered several very different approaches in which we could try to solve this problem and have iterated over some very different prototypes.

A couple of things that I’ve learned about problem solving and think are worth sharing:

1. Simple solutions are often very good solutions.

It’s not too uncommon to be more focussed on creating something impressive rather than something that simply gets the job done, especially here at MIT. When brainstorming, it’s good to note down whatever ideas come to mind, but to also stop sometimes and think about what the basis of problem is and how to address them.

2. Don’t get caught on one idea or in one direction; sometimes you need to consider other options.

EQB0011-BlogPhoto_0225_Original

 

This happened to me. Soon after being presented with the problem, I immediately thought of a potential solution, and became too attached to it. Only after we tested it and realized it didn’t give the most accurate results did I start considering going in a different direction. I would think that this is a common occurrence as well, people do get attached to their own ideas.

3. Draw inspiration from your surroundings.

This could be from everyday items around you, something you saw online, or from talking to your friends. I personally found that bouncing ideas off people completely uninvolved in the project often produced interesting ideas because these people often did not experience the problem presented in point #2. My main point is, if you constantly have this problem at the back of your head, you can find inspiration in many things.

 

Importance of collaboration

November 29th, 2015

Through PPAT I continue to understand the importance of collaboration with clients. Studying OT, we learn about client-centered practice theoretically, but it isn’t completely understood until you experience it empirically. Why should we make decisions jointly with clients, involve clients actively, and be egalitarian? What if I feel I know what is best for them?

I guess it’s all about promoting choice, freedom, and autonomy. As we demonstrate these values, the clients feel empowered, have opinions, and participate actively. We instill confidence in the clients and convey the idea that we view them as competent in their ability to direct and choose their own solution. When my team and I asked my client to freely speak his thoughts, it not only built rapport but also shed light on his talents. We saw how smart and creative he was. Surely, his ideas were very enlightening. As someone with the most knowledge of his own disability, he understood exactly what he needed and exactly what he wanted to have better access to reading his mails. Collaboration allowed him to open up, share his opinions, and suggest his own alternative solutions. Collaboration helped him become excited about meeting with us every week and confident that he also had something to share to the team.

On the flip side, I also see the cautions associated with this collaborative style. Overreliance on this style may not be received well by clients accustomed to, and who prefer to, view service providers as experts. According to Taylor (2008), clients inclined to participate in social or cultural networks with hierarchical role structures may not value collaboration and may be looking for structured instruction, advice, resources, and ongoing direction. Although my client now seems to not be in this population, it is important to know in the future that we should not misunderstand or misperceive less-engaged clients as being passive or even apathetic about finding their own solutions. These clients may be merely behaving within their own sociocultural comfort zones.

In conclusion, ultimately, I learned collaboration comes with understanding our clients’ preferences and allowing as much opportunity for them to shine.

Taylor, R. R. (2008). The intentional relationship: Occupational therapy and use of self. Philadelphia, PA: F. A. Davis Company.

Disproportional Market

November 26th, 2015

It is surprising to me how few of the ideas that are being worked on in PPAT this semester currently exist as products on the market, especially when many of them have the potential to help a broad range of individuals. When looking closer at the variety of assistive technologies that currently exist, I was shocked to find that while over one billion people in the world live with some form of disability, the global market for assistive technologies is reported to be a mere $30 billion in 2015. When considering that assistive technologies are based on giving people the chance at an easier life, and access to them can make an enormous impact on a person’s future, it is horrifying to think of how small this technological market is in today’s economy. To put this in perspective relative to other global markets, the automotive market is estimated to have had an annual revenue of $9 trillion in 2015! That would make the assistive technology market, which could restore fundamental human capabilities to over a billion individuals, a mere 0.3% of the automotive market, while in many countries cars are considered to be a luxury! One possible reason for this is that reports show that the average income of people with disabilities in the US is significantly lower than that of the average US citizen. Unfortunately, it is not uncommon for people who are over represented in poverty to have their needs ignored. In order to bring the market of assistive technologies to a reasonable level, it is important to fight this sort of prejudice in the work place, and restoring to the disabled community the respect and attention that is deserved. It is only then that there can be created the market necessary to really help people around the world.

Graphs showing the inequality in pay for people with disabilities

Glasses for the Blind

November 23rd, 2015

I was surprised to find out that 75% of registered blind people have the ability to detect light. This means that technologies can actually allow people who are blind to make use of the small amount of visual information they have. A major example of this is assisted vision glasses. One way these glasses can be used is converting one type of visual information into another, which is quite clever. If someone can distinguish lightness and darkness, as many people with visual impairment can, the glasses can turn that into depth information by making closer objects brighter. This can be achieved by using reflections from infrared laser beams to detect shape and distance and a normal video camera to record the detail of objects.

18J_019_BLIND GLASSES

 

Another example is giving the user color and light information to allow them to distinguish between moving and still objects. In addition to utilizing the user’s visual abilities, these glasses can also perform useful tasks like giving directions and reading signs, speaking the information into an ear piece. Below are some pictures of different eyewear technologies for people with impaired vision.

Oxford-Smart-Glasses-June-2014-Stephen-Hicks-glasses-coffee

esight-mom-see-baby

Unfortunately, it seems that most of the assistive eyewear currently on the market are much bulkier than regular glasses.  This made me think back to the presentation in class 0n aesthetics, and how important it is for a product to not only function, but also to look good. It’s sad that a device that could be extremely beneficial to someone might not get used simply because it looks strange and stands out. However, I’m sure that with advances in technology, these types of glasses will get less bulky and more fashionable over time. I think it’s a really creative idea to use the abilities someone has and adapt them for a much wider variety of uses.