Conceptual Design of a Powered Ankle-foot Prosthesis for Walking with Inversion and Eversion

Masum, Habib; Bhaumik, Subhasis; Ray, R.K.

doi:10.1016/j.protcy.2014.08.030

Cited by 22 publications

(13 citation statements)

References 5 publications

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“…The geared-five bar spring system is composed of five linkages, a parallel spring, a pair of gears fixed on two nonadjacent linkages and five rotary joins. Therefore, the freedom can be calculated from (1). Due to the benefits of abundant design parameters, the geared five-bar spring (GFBS) mechanism can closely replicate the desired nonlinear torque-angle relationship (during the CD phase of walking) after proper optimization.…”

Section: B Electromechanical Modeling Of the Sgfb Prosthesis Footmentioning

confidence: 99%

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Design, Optimization and Energetic Evaluation of an Efficient Fully Powered Ankle-Foot Prosthesis With a Series Elastic Actuator

Dong

Convens

et al. 2020

IEEE Access

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The use of powered ankle-foot prostheses for below-knee amputees leads to challenges like the peak power of the applied actuator and biomechanical features of the prosthesis foot. This paper proposes an efficient powered ankle-foot prosthesis with a series elastic actuator. By combining the geared five-bar spring (GFBS) mechanism and the traditional series elastic actuator (SEA), a series elastic with geared five-bar (SGFB) actuator is built. The new SGFB actuator has the benefits of both the GFBS and the SEA on mimicking biomechanics of the human ankle and reducing the peak power of the motor. The healthy walking gait in the experiment results indicates that the optimized SGFB prosthesis foot including a 150W Maxon DC motor can provide a 70kg subject enough net positive energy with an energy efficiency of 35.3% during normal speed walking in the treadmill trials. The experiment of the SGFB prosthesis foot in semi-active mode shows the advantage on closely mimicking the human biomechanics during the control dorsiflexion phase and the importance of injecting positive energy during the powered plantarflexion phase. The experiment results also show that the optimization of different parameters within the electromechanical model considering the efficiency of the whole drive train can effectively reduce the motor's peak power to 132 W by making the motor more effective in high-power conditions.

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Section: B Electromechanical Modeling Of the Sgfb Prosthesis Footmentioning

confidence: 99%

“…Below-knee amputation is one of the major amputations due to increasing number of peripheral vascular diseases and traffic accidents [1]. Large number of ankle-foot prostheses are designed and produced to meet the desire of lower-limber amputees participating in the daily activities.…”

Section: Introductionmentioning

confidence: 99%

Design, Optimization and Energetic Evaluation of an Efficient Fully Powered Ankle-Foot Prosthesis With a Series Elastic Actuator

Dong

Convens

et al. 2020

IEEE Access

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“…Follow-up on the prosthesis using the principles described by Masum et al(2014); Yuan et al(2011), have achieved several military-use versions, thanks to their resistance, and modular structure (Fergason, Keeling and Bluman, 2010). The modular approach of prosthesis allows swift replacement of defective parts without jeopardizing patient's health every time reparations are required.…”

Section: General State Of the Art In The Field Of Orthopedic Technologymentioning

confidence: 99%

Current overview of the state of disabled population, regarding the use of transtibial prosthesis

Martin¹,

Parra²

2017

Inf. Téc.

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En el Centro de Diseño y Metrología del SENA– CDM se ha detectado que la población en condición de discapacidad de miembros inferiores representa un desafío técnico y tecnológico en la recuperación de las condiciones normales de la marcha, puesto que se requieren intervenciones costosas o elementos que ayuden al desplazamiento de estas personas, como bastones, sillas de ruedas, muletas u otros implementos que sirvan de soporte y faciliten la rehabilitación del paciente. Es importante tener en cuenta que hay dudas acerca de si las prótesis existentes en el mercado suplen las necesidades económicas y de funcionalidad de cada paciente. Con esta investigación se pretende implementar una prótesis transtibial, a fin de mejorar algunas condiciones de la marcha del paciente. Colombia no cuenta con muchas entidades que diseñen y fabriquen los elementos que componen una prótesis. Por tal razón y porque en el SENA, específicamente en el Centro de Diseño y Metrología- CDM, hace aproximadamente cinco años se viene trabajando en el diseño y adaptación de ortesis y prótesis, pero con componentes importados, se quiere diseñar e implementar una articulación de tobillo para amputación transtibial, haciendo uso del recurso humano y tecnológico disponible en el país, y así, poder desarrollar un sistema con manufactura propia y 100 % SENA, que cumpla con las características de funcionalidad y ergonomía para los pacientes con dicha discapacidad. Este artículo científico original recopila la Información más relevante sobre un tema que afecta nuestra sociedad. Aquí se analizan diferentes fuentes bibliográficas descritas en la literatura existente. Con ellas creamos las etapas necesarias para la redacción del artículo definiendo los objetivos de la revisión, haciendo la búsqueda más relevante de la bibliografía y organizando la información de acuerdo con mapas mentales para redactar el artículo.

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“…According to system actuation, these devices can be roughly divided into two categories, that is, passive devices and powered devices. Passive devices, as the name implies, do not have any active power sources and are not able to supply nonconservative positive work [ 3 ]. To improve their ankle push-off properties, the so-called energy storing and returning (ESR) mechanisms are proposed by the researchers [ 4 ].…”

Section: Introductionmentioning

confidence: 99%

Design and Evaluation of a Wearable Powered Foot Orthosis with Metatarsophalangeal Joint

Liu

Zang

Zhang

et al. 2018

Applied Bionics and Biomechanics

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The metatarsophalangeal (MTP) joints play critical roles in human locomotion. Functional restriction or loss of MTP joints will lead to lower walking speed, poorer walking balance, and more consumed metabolic energy cost compared with normal walking. However, existing foot orthoses are focused on maintaining the movement of the ankle joint, without assisting the MTP joints. In this paper, in order to improve the walking performance of people with lower limb impairments, a wearable powered foot orthosis (WPFO) which has actuated MTP joint is designed and constructed. Preliminary experiments on three nondisabled subjects demonstrated functionality and capabilities of the WPFO to provide correctly timed dorsiflexion and plantar flexion assistance at the MTP joint during walking. These results also suggest that the WPFO could offer promise in certain rehabilitation applications and clinical treatment.

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Conceptual Design of a Powered Ankle-foot Prosthesis for Walking with Inversion and Eversion

Cited by 22 publications

References 5 publications

Design, Optimization and Energetic Evaluation of an Efficient Fully Powered Ankle-Foot Prosthesis With a Series Elastic Actuator

Design, Optimization and Energetic Evaluation of an Efficient Fully Powered Ankle-Foot Prosthesis With a Series Elastic Actuator

Current overview of the state of disabled population, regarding the use of transtibial prosthesis

Design and Evaluation of a Wearable Powered Foot Orthosis with Metatarsophalangeal Joint

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