Details
| Original language | English |
|---|---|
| Pages (from-to) | S1165-S1168 |
| Journal | Biomedizinische Technik |
| Volume | 59 |
| Issue number | s1 |
| Publication status | Published - 1 Oct 2014 |
Abstract
Numerous foot prostheses are currently on the market for persons with an amputations at the lower extremity. The common prosthesis is passive, causing many clinical problems, including non-symmetric gait patterns, poorer shock absorption, and higher gait metabolism. This has lead to gradually more attention being paid to the incorporation of active elements in prosthetics since the 1990's. However, most of these devices are still on research level. Those which were made market ready still have disadvantages such as, high weights, low battery capacity or an insufficient energetically support of the gait. In this paper an active foot prosthetic model was developed using a wide requirement catalogue. Following the recent literature the concept implements the idea of a series elastic actuator (SEA) and a second parallel-arranged spring. The series spring reduces the peak output and absorbs shocks from the actuator. The prosthetic model is built on a market available passive foot prosthesis, which obtains good elastic properties. The implemention of a parallel spring stores energy during the stance-phase and supports the push off. The maximum range of motion (20° plantar-flection and 13° dorsal-flection) enables walking on level-ground as good as on a ramp or stairs. This concept yields a prosthetic model that compensates the downfalls of the current model, and facilitates an improvement of the everyday life of the user.
ASJC Scopus subject areas
- Engineering(all)
- Biomedical Engineering
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In: Biomedizinische Technik, Vol. 59, No. s1, 01.10.2014, p. S1165-S1168.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Concept, design and construction of an active supporting foot prosthesis
AU - Schönherr, J.
AU - Müller, M.
AU - Glasmacher, B.
PY - 2014/10/1
Y1 - 2014/10/1
N2 - Numerous foot prostheses are currently on the market for persons with an amputations at the lower extremity. The common prosthesis is passive, causing many clinical problems, including non-symmetric gait patterns, poorer shock absorption, and higher gait metabolism. This has lead to gradually more attention being paid to the incorporation of active elements in prosthetics since the 1990's. However, most of these devices are still on research level. Those which were made market ready still have disadvantages such as, high weights, low battery capacity or an insufficient energetically support of the gait. In this paper an active foot prosthetic model was developed using a wide requirement catalogue. Following the recent literature the concept implements the idea of a series elastic actuator (SEA) and a second parallel-arranged spring. The series spring reduces the peak output and absorbs shocks from the actuator. The prosthetic model is built on a market available passive foot prosthesis, which obtains good elastic properties. The implemention of a parallel spring stores energy during the stance-phase and supports the push off. The maximum range of motion (20° plantar-flection and 13° dorsal-flection) enables walking on level-ground as good as on a ramp or stairs. This concept yields a prosthetic model that compensates the downfalls of the current model, and facilitates an improvement of the everyday life of the user.
AB - Numerous foot prostheses are currently on the market for persons with an amputations at the lower extremity. The common prosthesis is passive, causing many clinical problems, including non-symmetric gait patterns, poorer shock absorption, and higher gait metabolism. This has lead to gradually more attention being paid to the incorporation of active elements in prosthetics since the 1990's. However, most of these devices are still on research level. Those which were made market ready still have disadvantages such as, high weights, low battery capacity or an insufficient energetically support of the gait. In this paper an active foot prosthetic model was developed using a wide requirement catalogue. Following the recent literature the concept implements the idea of a series elastic actuator (SEA) and a second parallel-arranged spring. The series spring reduces the peak output and absorbs shocks from the actuator. The prosthetic model is built on a market available passive foot prosthesis, which obtains good elastic properties. The implemention of a parallel spring stores energy during the stance-phase and supports the push off. The maximum range of motion (20° plantar-flection and 13° dorsal-flection) enables walking on level-ground as good as on a ramp or stairs. This concept yields a prosthetic model that compensates the downfalls of the current model, and facilitates an improvement of the everyday life of the user.
UR - http://www.scopus.com/inward/record.url?scp=84908214617&partnerID=8YFLogxK
U2 - 10.1515/bmt-2014-4502
DO - 10.1515/bmt-2014-4502
M3 - Article
AN - SCOPUS:84908214617
VL - 59
SP - S1165-S1168
JO - Biomedizinische Technik
JF - Biomedizinische Technik
SN - 0013-5585
IS - s1
ER -