Title

Mountain Arm

Author(s) Information

Conner Magnuson, California Polytechnic State University, San Luis ObispoFollow
Amanda Lingle, California Polytechnic State University, San Luis ObispoFollow
Jordan Ambrose, California Polytechnic State University, San Luis ObispoFollow
Marco Lopez, California Polytechnic State University, San Luis ObispoFollow

College - Author 1

College of Engineering

Department - Author 1

Mechanical Engineering Department

Degree Name - Author 1

BS in Mechanical Engineering

College - Author 2

College of Engineering

Department - Author 2

Biomedical Engineering Department

Degree - Author 2

BS in Biomedical Engineering

College - Author 3

College of Engineering

Department - Author 3

Biomedical Engineering Department

Degree - Author 3

BS in Biomedical Engineering

College - Author 4

College of Engineering

Department - Author 4

Biomedical Engineering Department

Degree - Author 4

BS in Biomedical Engineering

Date

6-2020

Primary Advisor

Karla Carichner, College of Engineering, Industrial & Manufacturing Engineering Department

Abstract/Summary

QL+ Challenger, US Navy Veteran, and transhumeral amputee Cassie Perando needed a way to backpack comfortably and independently while wearing a transhumeral prosthesis, as this is something that she enjoys doing often. The current prosthesis she wears causes pinching while wearing a backpack. To eliminate this issue, we decided to design and create a dynamic, pin-lock socket. This design decision allowed for a comfortable fit for Cassie that will not interfere with the backpack straps. As a secondary suspension system, we designed a sports bra with straps that attach to her opposing side and connect to the front and the back of the prosthesis’ socket in order to spread the force of the prosthesis over a larger surface area. To complete the prosthesis, the following components were purchased: E400 elbow, a NEXO Forearm Kit, a Quick Disconnect wrist adapter, and a stainless steel cable system. After testing individual components and obtaining feedback from Cassie, the components were assembled into a final product. The product had to be built separately due to COVID-19. The handoff of the product to Cassie was postponed due to a final fitting that needs to occur in person. This could not be performed during the end of spring quarter due to the pandemic, but is expected to occur in mid-June. Overall, with the successful manufacturing of the final product, regardless of challenges stemming from the pandemic, we were able to meet our engineering and customer requirements, while keeping the cost low.

URL: https://digitalcommons.calpoly.edu/genengsp/5