Snap Into Motion



Our capstone design project is to design a system to aid lower limb amputees in donning their prosthetic liner. The design needs to ensure that the pin is aligned correctly for a patient with low flexibility, dexterity, or vision. The product should be comfortable, easy to use, work with current commercial pin locking liners, and reduce strain for the patient during the donning process.

Sponsors

 * Client: Lisa Huffman of Puget Sound V.A.
 * Mentors:
 * Dr. Tom Hess
 * Chris Ohlinger

Team Members

 * Jordan Simonson
 * Samantha Sutherland
 * Matthew Guthrie
 * Jennifer Rainey
 * Allyson Labrum

Design Goals

 * 1) Allow for patients to don the liner themselves easily
 * 2) The pin must be aligned each time the liner is donned
 * 3) Must accomadate all liner sizes and brand variations
 * 4) Must be easy to use for patients with low hand dexterity and limited flexibility

Dimensional Analysis of Transtibial Roll-On Style Prosthetic Liners
Size Medium Size Medium + Size Large Size Large + Size Large ++
 * Proximal Diameter: 3.1 in - 6.2 in
 * Proximal Diameter: 4.0 in - 7.2 in
 * Proximal Diameter: 4.4 in - 8.5 in
 * Proximal Diameter: 4.7 in - 10.5 in
 * Proximal Diameter: 5.3 in - 11.7 in

Concept Testing
References: