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Biomimetic Slope Adaptive Foot-Ankle Prosthesis

Award Information
Agency: Department of Defense
Branch: Defense Health Agency
Contract: W81XWH18C0314
Agency Tracking Number: H2-0299
Amount: $542,359.21
Phase: Phase II
Program: STTR
Solicitation Topic Code: DHP16C-007
Solicitation Number: 16.C
Solicitation Year: 2016
Award Year: 2022
Award Start Date (Proposal Award Date): 2022-01-05
Award End Date (Contract End Date): 2024-05-04
Small Business Information
115 North Wright Brothers Dr.
Salt Lake City, UT 84116
United States
DUNS: 177661386
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Edwin K Iversen
 Vice President of Research & Development
 (801) 326-3434
Business Contact
 Arthur Dyck
Phone: (801) 326-3434
Research Institution
 Minnesota Veterans Medical Research and Education Foundation (MVMREF)
 Larry Kuusisto, Ph.D Larry Kuusisto, Ph.D
One Veterans Drive Array
Minneapolis, MN 55417
United States

 (612) 467-5732
 Nonprofit College or University

The primary objectiveis to develop acommercially-viable prototype of theslopeadaptive prosthesis design and to iteratively improvethe design based on ISO standards testingand rigorous usein human subject field trials. The proposed work will build upon knowledgegained in PhaseI of the project,which established feasibility for this design approach in alightweight, passive hydraulicfoot-anklesystem. The Biomimetic Slope AdaptiveFoot developed in this project seeks to mimicthe physiologicankle by storingenergy sooner in thegaitcycle, settingtheequilibrium pointat foot-flat instead ofmid-stance,which allowsenergy to bestored overalarger range ofmotion and released to the user during unloading. This isexpected to provideagreateramount ofenergy storageand return. Current non-powered (passive) footankle prosthesescannotadapt orchangealignment to different terrain during walking. Theyareless stablethan an articulated ankle,which can reach foot-flatvery soon after heel strike. The proposed foot will haveautomaticslopeadaptation through hydraulicanklearticulation. The purely mechanical system,without battery pack orelectronics,will beinherently morerugged and robust,meetingthe needs ofactive prosthesis wearers,whether servicemembers,veterans orcivilians.

* Information listed above is at the time of submission. *

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