A Release and Relock Socket to Enhance Volume Management and Facilitate Patient Self-Care
Abstract
Aim no. 2, an in-lab study to assess the impact of short-duration and long-duration socket release on residual limb fluid volume compared with no release, was completed. Results showed that 62 percent of participants lost less limb fluid volume using either socket release strategy, 23 percent lost less limb fluid volume only with the short-duration release strategy, and 8 percent lost less fluid volume only with the long-duration release strategy. No relationship between the release strategy that induced the least fluid volume loss and participant physical characteristics or heart rate was identified. In preparation for Aim no. 3, the release and relock controller design was modified to include transitory states that enhanced reliability, increased battery life, and better delineated in the data stream how the system was used. A thicker tether and a tether guide were added to reduce the risk of tether damage during take-home use in Aim no. 3. Pilot Aim no. 3 studies demonstrated reliable performance in multi-day testing. Participant gains during partial doffs were evident in liner pin depth and liner-to-socket distance data.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 2021
- Accession Number
- AD1155694
Entities
People
- Brian J Hafner
- Janna Friedly
- Joan E Sanders
- Joseph L. Garbini
Organizations
- University of Washington