Adjusting and Logging Rheo Knee Parameter Values Using a Smartphone Application

A smartphone application, including its architecture, is presented which can establish a Bluetooth connection with a Rheo Knee. The Rheo Knee is a prosthetic knee produced by Össur which is designed for use by transfemoral amputees. The smartphone application includes functionality which allows it to transfer parameter data from the Rheo Knee to a Google sheet database, as well as adjust parameter values within the Rheo Knee. The adjustment of these values results in different levels of damping in the prosthetic knee joint. These damping magnitudes are used to control the amount of flexion in the knee during stance, as well as the amount of impact experienced as the knee reaches full extension in swing. The smartphone application can be used to select different parameter values by adjusting the position of a marker within an interactive two-dimensional graph. The initial scheme that was used to map the marker’s position to particular parameter values is evaluated. Test results are analysed and used as a benchmark for a revised mapping scheme. Also discussed is the efficiency of the application in transferring parameter data from the knee to the Google sheet database. Aspects of the application´s software architecture can be used as an aid in the development of commercial software which serves a similar purpose. This can either be by direct refinement and integration of programing code, or through the utilization of similar approaches as discussed in this paper.

Author dc:creator

• Edwards, Thomas Andrew, 1984-

Contributors dc:contributor

• Háskóli Íslands

• Mekatróník hátæknifræði

Language dc:language.iso

en

Handle dc:identifier.uri

http://hdl.handle.net/1946/21588

OAI identifier oai:identifier

oai:skemman.is:1946/21588