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Active Above-Knee Prosthesis

Active Above-Knee Prosthesis
A Guide to a Smart Prosthetic Leg

by Zlata Jelacic,Remzo Dedic,Haris Dindo

  • Publisher : Academic Press
  • Release : 2020-06-16
  • Pages : 290
  • ISBN : 0128186844
  • Language : En, Es, Fr & De
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Active Above-Knee Prosthesis: A Guide to a Smart Prosthetic Leg presents original research and development results, providing a firsthand overview of idea generation and prototype production. The book gives insights into the problem of stair ascent for people with above-knee amputation and offers a solution in the form of a physical prototype of an active above-knee prosthesis with an actuated ankle. The book's authors have developed and tested a physical prototype of an active above-knee prosthesis, giving anyone who is researching and designing prosthetic devices firsthand knowledge on how to build on, and continue with, work that has already been done. Presents state-of-the-art technology in powered prosthetics Helps readers evaluate design options and create new developments Provides guidance on the evolution of advanced prosthetic design

Design Tool for the Synthesis of a Knee Mechanism for an Active Above-knee Prosthesis

Design Tool for the Synthesis of a Knee Mechanism for an Active Above-knee Prosthesis
A Book

by Carrie Ann Ullmann

  • Publisher : Unknown Publisher
  • Release : 2000
  • Pages : 150
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Design of a Self-contained, Active, Regenerative Computer Controlled Above-knee Prosthesis

Design of a Self-contained, Active, Regenerative Computer Controlled Above-knee Prosthesis
A Book

by Bradley L. Hunter

  • Publisher : Unknown Publisher
  • Release : 1981
  • Pages : 238
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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An Active Multi-mode Above Knee Prosthesis Controller

An Active Multi-mode Above Knee Prosthesis Controller
A Book

by Donald Lee Grimes

  • Publisher : Unknown Publisher
  • Release : 1979
  • Pages : 316
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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A Design Tool for the Development of a Pneumatic-hydraulic Actuator for an Active, Above-knee Prosthesis

A Design Tool for the Development of a Pneumatic-hydraulic Actuator for an Active, Above-knee Prosthesis
A Book

by Zineb Benamar

  • Publisher : Unknown Publisher
  • Release : 2001
  • Pages : 182
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Design and Evaluation of a Biomimetic Agonist-antagonist Active Knee Prosthesis

Design and Evaluation of a Biomimetic Agonist-antagonist Active Knee Prosthesis
A Book

by Ernesto Carlos Martinez Villalpando,Massachusetts Institute of Technology. Department of Architecture. Program in Media Arts and Sciences

  • Publisher : Unknown Publisher
  • Release : 2012
  • Pages : 102
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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The loss of a limb is extremely debilitating. Unfortunately, today's assistive technologies are still far from providing fully functional artificial limb replacements. Although lower extremity prostheses are currently better able to give assistance than their upper-extremity counterparts, important locomotion problems still remain for leg amputees. Instability, gait asymmetry, decreased walking speeds and high metabolic energy costs are some of the main challenges requiring the development of a new kind of prosthetic device. These challenges point to the need for highly versatile, fully integrated lower-extremity powered prostheses that can replicate the biological behavior of the intact human leg. This thesis presents the design and evaluation of a novel biomimetic active knee prosthesis capable of emulating intact knee biomechanics during level-ground walking. The knee design is motivated by a mono-articular prosthetic knee model comprised of a variable damper and two series elastic clutch units spanning the knee joint. The powered knee system is comprised of two series-elastic actuators positioned in parallel in an agonist-antagonist configuration. This investigation hypothesizes that the biomimetic active-knee prosthesis, with a variable impedance control, can improve unilateral transfemoral amputee locomotion in level-ground walking, reducing the metabolic cost of walking at selfselected speeds. To evaluate this hypothesis, a preliminary study investigated the clinical impact of the active knee prosthesis on the metabolic cost of walking of four unilateral above-knee amputees. This preliminary study compared the antagonistic active knee prosthesis with subjects' prescribed knee prostheses. The subjects' prescribed prostheses encompass four of the leading prosthetic knee technologies commercially available, including passive and electronically controlled variable-damping prosthetic systems. Use of the novel biomimetic active knee prosthesis resulted in a metabolic cost reduction for all four subjects by an average of 5.8%. Kinematic and kinetic analyses indicate that the active knee can increase self-selected walking speed in addition to reducing upper body vertical displacement during walking by an average of 16%. The results of this investigation report for the first time a metabolic cost reduction when walking with a prosthetic system comprised of an electrically powered active knee and passive foot-ankle prostheses, as compared to walking with a conventional transfemoral prosthesis. With this work I aim to advance the field of biomechatronics, contributing to the development of integral assistive technologies that adapt to the needs of the physically challenged.

Intelligent Controls for a Semi-active Hydraulic Prosthetic Knee

Intelligent Controls for a Semi-active Hydraulic Prosthetic Knee
A Book

by Timothy Allen Wilmot

  • Publisher : Unknown Publisher
  • Release : 2011
  • Pages : 89
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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We discuss open loop control development and simulation results for a semi-active above-knee prosthesis. The control signal consists of two hydraulic valve settings. These valves control a rotary actuator that provides torque to the prosthetic knee. We develop open loop control using biogeography-based optimization (BBO), which is a recently developed evolutionary algorithm, and gradient descent. We use gradient descent to show that the control generated by BBO is locally optimal. This research contributes to the field of evolutionary algorithms by demonstrating that BBO is successful at finding optimal solutions to complex, real-world, nonlinear, time varying control problems. The research contributes to the field of prosthetics by showing that it is possible to find effective open loop control signals for a newly proposed semi-active hydraulic knee prosthesis. The control algorithm provides knee angle tracking with an RMS error of 7.9 degrees, and thigh angle tracking with an RMS error of 4.7 degrees. Robustness tests show that the BBO control solution is affected very little by disturbances added during the simulation. However, the open loop control is very sensitive to the initial conditions. So a closed loop control is needed to mitigate the effects of varying initial conditions. We implement a proportional, integral, derivative (PID) controller for the prosthesis and show that it is not a sufficient form of closed loop control. Instead, we implement artificial neural networks (ANNs) as the mechanism for closed loop control. We show that ANNs can greatly improve performance when noise and disturbance cause high tracking errors, thus reducing the risk of stumbles and falls. We also show that ANNs are able to improve average performance by as much as 8% over open loop control. We also discuss embedded system implementation with a microcontroller and associated hardware and software.

Design of a hybrid passive-active prosthesis for above-knee amputees

Design of a hybrid passive-active prosthesis for above-knee amputees
A Book

by Bram Gilbert Antoon Lambrecht

  • Publisher : Unknown Publisher
  • Release : 2008
  • Pages : 212
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Energy Regeneration and Its Application to Active Above-knee Prostheses

Energy Regeneration and Its Application to Active Above-knee Prostheses
A Book

by Bhartendu Seth

  • Publisher : Unknown Publisher
  • Release : 1987
  • Pages : 392
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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An Evaluation of an Above-knee Prosthesis to Facilitate Rapid Gait

An Evaluation of an Above-knee Prosthesis to Facilitate Rapid Gait
A Book

by Kimberly Ann Lovasik

  • Publisher : Unknown Publisher
  • Release : 1993
  • Pages : 202
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Design of Test Bench Apparatus and Preliminary Weight Reduction Strategy for an Active Knee Prosthesis

Design of Test Bench Apparatus and Preliminary Weight Reduction Strategy for an Active Knee Prosthesis
A Book

by Jacky Homing Lau,Massachusetts Institute of Technology. Department of Mechanical Engineering

  • Publisher : Unknown Publisher
  • Release : 2011
  • Pages : 36
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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This thesis presents the design and structural analyses of an experimental test bench for the characterization of an active biomimetic knee prosthesis currently being developed by the Biomechatronics research group at MIT Media Laboratory. Finite element analysis (FEA) is conducted to determine the maximum stress and material deflections of three principle components of the test bench and to verify their structural integrity. In addition, FEA is performed on the chassis of the active knee prosthesis when subjected to the expected loads associated with walking. The simulation results verify that the active prosthetic do not expect structural failure during level ground walking trials with above knee amputee participants. Finally, an empirical weight reduction strategy for the active knee is proposed and analyzed. This strategy aims to reduce distal leg mass which contributes to the overall energetic demands of amputee walking. FEA on the modified active knee prosthesis chassis validate the strategy modifications while maintaining the original design feature constraints.

Lower Extremity Amputations for Arterial Insufficiency

Lower Extremity Amputations for Arterial Insufficiency
A Book

by Richard Warren,Eugene E. Record

  • Publisher : Unknown Publisher
  • Release : 1967
  • Pages : 102
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Immediate and Early Prosthetic Management

Immediate and Early Prosthetic Management
Rehabilitation Aspects

by John J. Gerhardt,Philip S. King,Joseph H. Zettl

  • Publisher : Hans Huber Pub
  • Release : 1986
  • Pages : 305
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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While stressing at all times the need for a multidisciplinary team approach toward the treatment of the lower limb amputee, this book also covers the basic concepts which must be understood if amputee management is to be successful.

Immediate Postsurgical Prosthetics in the Management of Lower Extremity Amputees

Immediate Postsurgical Prosthetics in the Management of Lower Extremity Amputees
A Book

by Ernest M. Burgess,Joseph E. Traub,A. Bennett Wilson

  • Publisher : Unknown Publisher
  • Release : 1967
  • Pages : 51
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Amputees and Their Prostheses

Amputees and Their Prostheses
A Book

by Mohinder A. Mital,Donald S. Pierce

  • Publisher : Unknown Publisher
  • Release : 1971
  • Pages : 214
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Amputations and Prostheses

Amputations and Prostheses
A Book

by Miroslaw Vitali

  • Publisher : Bailliere Tindall Limited
  • Release : 1978
  • Pages : 241
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Orthotics, Prosthetics, & Mobility Aids

Orthotics, Prosthetics, & Mobility Aids
January 1989 Through June 1993 : 2316 Citations

by Ronald L. Gordner

  • Publisher : Unknown Publisher
  • Release : 1993
  • Pages : 199
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Current Bibliographies in Medicine

Current Bibliographies in Medicine
A Book

by Anonim

  • Publisher : Unknown Publisher
  • Release : 1988
  • Pages : 129
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Amputation Prosthesis

Amputation Prosthesis
Anatomic and Physiologic Considerations, with Principles of Alignment and Fitting Designed for the Surgeon and Limb Manufacturer

by Atha Thomas,Chester C. Haddan

  • Publisher : Unknown Publisher
  • Release : 1945
  • Pages : 305
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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CMBEBIH 2019

CMBEBIH 2019
Proceedings of the International Conference on Medical and Biological Engineering, 16 ̶̶ 18 May 2019, Banja Luka, Bosnia and Herzegovina

by Almir Badnjevic,Ranko Škrbić,Lejla Gurbeta Pokvić

  • Publisher : Springer
  • Release : 2019-05-10
  • Pages : 782
  • ISBN : 3030179710
  • Language : En, Es, Fr & De
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This volume gathers the proceedings of the International Conference on Medical and Biological Engineering, which was held from 16 to 18 May 2019 in Banja Luka, Bosnia and Herzegovina. Focusing on the goal to ‘Share the Vision’, it highlights the latest findings, innovative solutions and emerging challenges in the field of Biomedical Engineering. The book covers a wide range of topics, including: biomedical signal processing, medical physics, biomedical imaging and radiation protection, biosensors and bioinstrumentation, bio-micro/nano technologies, biomaterials, biomechanics, robotics and minimally invasive surgery, and cardiovascular, respiratory and endocrine systems engineering. Further topics include bioinformatics and computational biology, clinical engineering and health technology assessment, health informatics, e-health and telemedicine, artificial intelligence and machine learning in healthcare, as well as pharmaceutical and genetic engineering. Given its scope, the book provides academic researchers, clinical researchers and professionals alike with a timely reference guide to measures for improving the quality of life and healthcare.