Multi-function chair for EPICS 4 Senior Design Project

 

Project Title:	Multi-Function Chair for Child with Arthrogryrosis
Objectives:	A multi-function chair needs to be adapted for a 3-year old child with a 120-degree knee extension limitation. This child also has severe webbing that begins at the femur and extends downward to the mid tibial area. Because of the severe flexion limitation, sitting is difficult and adaptations are necessary.
Executive Summary:	The EPICS 4 Senior Design Project involved creating a multipurpose, daily activities and potty chair for a child with arthrogryposis. With this birth condition, the child has a knee flexion of 120° from completely straight due to severe webbing behind the knee, requiring the development of a special chair for the individual. The goal was to design and develop a prototype of a chair that can assist the individual in obtaining the maximum amount of independence and freedom to move. The frame of the chosen design was constructed of polyvinyl chloride (PVC) pipe. PVC was chosen for its manufacturability and cost. Two interchangeable wheel assemblies were constructed to give the desired functions of straight or swivel wheels. This allows for a progression from more control with straight wheels to more mobility with the swivel wheels. The seat was made of a nylon material that was comfortable and easy to clean. A detachable desk permits its removal during activities for which it is not required. To facilitate an integrated toilet design, a cantilevered assembly was developed. Tipping analysis was performed on the seat assembly to determine required dimensions for the specified level of safety. To determine the necessary pipe diameter and thickness with a safety factor of two, a bending analysis was performed.
Technical Contact:	Stephen S. Civils Physical Therapist Central Intermediate Unit P.O. Box 90 Curwensville, PA 16833 Ph: 814-236-3381
Faculty Coach:	John Lamancusa http://www.mne.psu.edu/lamancusa
Date:	April 23, 2002