Development of a Passive and Slope Adaptable Prosthetic Foot

Historically, users of prosthetic ankles have relied on actively operated systems to provide effective slope adaptability. However, there are many drawbacks to these systems. This research builds upon work previously completed by Hansen et al. as it develops a passive, hydraulically operated prosthe...

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Main Authors: Amiot, David Engel, Schmidt, Rachel M., Law, Angwei, Meinig, Erich Paul, Yu, Lynn S., Olesnavage, Kathryn, Prost, Victor, Winter, Amos G.
Other Authors: MIT-SUTD Collaboration
Format: Article
Published: ASME International 2019
Online Access:http://hdl.handle.net/1721.1/120789
https://orcid.org/0000-0002-2940-2383
https://orcid.org/0000-0002-1680-5108
https://orcid.org/0000-0002-4151-0889
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author Amiot, David Engel
Schmidt, Rachel M.
Law, Angwei
Meinig, Erich Paul
Yu, Lynn S.
Olesnavage, Kathryn
Prost, Victor
Winter, Amos G.
author2 MIT-SUTD Collaboration
author_facet MIT-SUTD Collaboration
Amiot, David Engel
Schmidt, Rachel M.
Law, Angwei
Meinig, Erich Paul
Yu, Lynn S.
Olesnavage, Kathryn
Prost, Victor
Winter, Amos G.
author_sort Amiot, David Engel
collection MIT
description Historically, users of prosthetic ankles have relied on actively operated systems to provide effective slope adaptability. However, there are many drawbacks to these systems. This research builds upon work previously completed by Hansen et al. as it develops a passive, hydraulically operated prosthetic ankle with the capability of adapting to varying terrain in every step. Using gait cycle data and an analysis of ground reaction forces, the team determined that weight activation was the most effective way to activate the hydraulic circuit. Evaluations of the system pressure and energy showed that although the spring damper system results in a loss of 9J of energy to the user, the footplate stores 34J more than a standard prosthesis. Therefore, the hydraulic prosthetic provides a 54% increase in stored energy when compared to a standard prosthesis. The hydraulic circuit manifold prototype was manufactured and tested. Through proof of concept testing, the prototype proved to be slope adaptable by successfully achieving a plantarflexion angle of 16 degrees greater than a standard prosthetic foot currently available on the market.
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spelling mit-1721.1/1207892022-09-28T13:52:55Z Development of a Passive and Slope Adaptable Prosthetic Foot Amiot, David Engel Schmidt, Rachel M. Law, Angwei Meinig, Erich Paul Yu, Lynn S. Olesnavage, Kathryn Prost, Victor Winter, Amos G. MIT-SUTD Collaboration Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science Massachusetts Institute of Technology. Department of Mathematics Massachusetts Institute of Technology. Department of Mechanical Engineering Massachusetts Institute of Technology. Department of Urban Studies and Planning Sloan School of Management Amiot, David Engel Schmidt, Rachel M. Law, Angwei Meinig, Erich Paul Yu, Lynn S. Olesnavage, Kathryn Prost, Victor Winter, Amos G. Historically, users of prosthetic ankles have relied on actively operated systems to provide effective slope adaptability. However, there are many drawbacks to these systems. This research builds upon work previously completed by Hansen et al. as it develops a passive, hydraulically operated prosthetic ankle with the capability of adapting to varying terrain in every step. Using gait cycle data and an analysis of ground reaction forces, the team determined that weight activation was the most effective way to activate the hydraulic circuit. Evaluations of the system pressure and energy showed that although the spring damper system results in a loss of 9J of energy to the user, the footplate stores 34J more than a standard prosthesis. Therefore, the hydraulic prosthetic provides a 54% increase in stored energy when compared to a standard prosthesis. The hydraulic circuit manifold prototype was manufactured and tested. Through proof of concept testing, the prototype proved to be slope adaptable by successfully achieving a plantarflexion angle of 16 degrees greater than a standard prosthetic foot currently available on the market. Massachusetts Institute of Technology. Tata Center for Technology and Design 2019-03-07T15:24:41Z 2019-03-07T15:24:41Z 2017-08 2019-01-11T14:52:43Z Article http://purl.org/eprint/type/ConferencePaper 978-0-7918-5817-2 http://hdl.handle.net/1721.1/120789 Amiot, David E., Rachel M. Schmidt, Angwei Law, Erich P. Meinig, Lynn Yu, Kathryn M. Olesnavage, Victor Prost, and Amos G. Winter. “Development of a Passive and Slope Adaptable Prosthetic Foot.” Volume 5A: 41st Mechanisms and Robotics Conference (August 6, 2017). https://orcid.org/0000-0002-2940-2383 https://orcid.org/0000-0002-1680-5108 https://orcid.org/0000-0002-4151-0889 http://dx.doi.org/10.1115/DETC2017-67947 Volume 5A: 41st Mechanisms and Robotics Conference Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf ASME International ASME
spellingShingle Amiot, David Engel
Schmidt, Rachel M.
Law, Angwei
Meinig, Erich Paul
Yu, Lynn S.
Olesnavage, Kathryn
Prost, Victor
Winter, Amos G.
Development of a Passive and Slope Adaptable Prosthetic Foot
title Development of a Passive and Slope Adaptable Prosthetic Foot
title_full Development of a Passive and Slope Adaptable Prosthetic Foot
title_fullStr Development of a Passive and Slope Adaptable Prosthetic Foot
title_full_unstemmed Development of a Passive and Slope Adaptable Prosthetic Foot
title_short Development of a Passive and Slope Adaptable Prosthetic Foot
title_sort development of a passive and slope adaptable prosthetic foot
url http://hdl.handle.net/1721.1/120789
https://orcid.org/0000-0002-2940-2383
https://orcid.org/0000-0002-1680-5108
https://orcid.org/0000-0002-4151-0889
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