Bounce Chair For Isaac F14

Team members

• Samantha Fagan
• Cody Partlow
• Matt Anthony
• Jeff Carey
• Aaron Downs

• Therapist = Rene Canfield
• Parents = Charles and April

Problem Statement

Isaac has had a traumatic brain injury and his motions have become involuntary.

One of his parents must hold him at all times, and this is burdensome to them.

We will design a chair that they can set him in and will keep him occupied and pain-free.

Isaac at age 10 is 4'11" and weighs 60lbs and sure to grow!

Design Specifications

Legs/Frame

If the design we choose has legs, they must be collapsible. Our family likes to travel and will need to transport the device easily.

Seat

The seat must keep Isaac's knees to hip angle at 90 degrees to prevent him from sliding out. The seat needs to be comfortable and covered with material that is either water-resistant and/or washable.

Leg Support

Issac's legs must be kept bent by use of resistance. If his knees lock, it is painful to him.

Seat Back

Seat back, like the seat, must be comfortable and covered with a washable material. There also needs to be some padding on the side to prevent his arms from "wandering".

Head Mount

The head mount will be attached to the seat back. Issac tries to roll his head backwards, and the head mount will serve to resist this motion.

Harness

The harness will also be attached to the seat back. The harness will need to secure his chest to the seat back, as he will involuntarily bend forward if unrestrained. The harness needs to be adjustable so that as Issac grows, they can adjust the device with him.

Arm Resistance

And additional item here would be to have some kind of resistance for his hands to grab and keep his arms occupied.

Conceptual Design

Design Concept 1

Pros:

• Flexible material allows for comfortable fit
• Easy to clean
• Easy to move around
• Collapsible and adjustable frame

Cons:

• Limited restraints
• One size fit all
• Not sturdy
• Weak body supports

Design Concept 2

• 

  Design 2

Pros

• Comfortable
• Very padded to decrease injury
• Table area to play or eat
• Stable
• Has barriers to contain him

Cons

• Heavy in weight
• No leg support
• Multitude of open areas(chance of getting limbs/fingers caught)
• No straps to keep head stable

Design Concept 3

Pros:

• Collapsible
• Good Mobility
• Stable
• Formed Seat for maximum restraint and comfort
• Durable
• Continuous fit with growth
• Tone resistant

Cons:

• Heavy/Bulky
• Limited comfort

Design Concept 4

Pros:

• Collapsible
• Good Mobility
• Stable frame
• Comfortable

Cons:

• Many small areas
• Loose fit

Evaluate concepts/select candidate

From the results of this matrix we found that Design concept 3 is the overall better project fit for Issac. In saying that all our design concepts were competitive while making this matrix.

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Detailed Design

This section will describe a detailed design process

Description of selected design

We selected the 4th design concept as the best fit design for our project. The wheelchair that we will base our project from meets many aspects that fit the families requirements and needs. While there are other requirements that are not met we have found ways to modify the existing chair to best fit the requirements.

Detailed description of selected design

We will use the existing reclining wheel chair as our base model. This will offer us the reclining capability along with an easy collapsible frame. We will swap out the original wheels with heavy duty casters to withstand outdoor and excessive use. A five point harness will also be added for extra body support and to help hold Isaac into the chair. This will prevent him from sliding out of the chair or moving out of place into unwanted positions. Since the Chair is not fully fitted to Isaac's body we will be adding memory foam padding to make the chair more comfortable while also allowing for a form fit and will be able to expand out as we grows. This will allow for extended use as he grows.Since there are many small crevices in the chair we will fabricate guards to prevent Isaac from getting himself stuck or possibly injuring himself unintentionally.

Engineering Analysis

Mobility Analysis

Weight Analysis

Restraint Analysis

Drawings

• This is a representation of the 5 point harness we will be using to help secure Isaac safely into his seat.

• A model of the wheelchair we will purchase and make modifications to fit the needs of Isaac and his family.

• Models of the casters we will be using to replace the original wheels.

• Hans device for Isaacs Upper body restraint.

• Foot bindings to keep Isaac's feet stable and off the ground while in his chair.

Bill of Materials

Assembly Instructions

"Video 1: Brief of Features" https://www.youtube.com/watch?v=8r9iOkBeP9c&feature=youtu.be

"Video 2: Assembly Process" https://www.youtube.com/watch?v=OCKZEXR0XnY&feature=youtu.be

Fabrication Process

Photos of Completed design

"Video 1: Brief of Features" https://www.youtube.com/watch?v=8r9iOkBeP9c&feature=youtu.be

"Video 2: Assembly Process" https://www.youtube.com/watch?v=OCKZEXR0XnY&feature=youtu.be

Safety Notes

Before reclining the chair: 1. Make sure wheels are locked. 2. Make sure safety wheels in back are in the lowest position (to prevent tipping). 3. When you recline the chair, you will have to re-tighten the shoulder straps.

Before returning the chair to an upright position, make sure the shoulder straps are loosened.