Power Grip Exoskeleton Design as Rehabilitation Devices for Post-Stroke Survivors

A cerebrovascular accident, or a stroke, can cause significant neurological damage, inflicting the patient with loss of motor function in their hands. Standard rehabilitation therapy for the hand increases demands on clinics, creating an avenue for powered hand rehabilitation devices. Hand rehabilitation devices (HRDs) are devices designed to provide the hand with passive, active, and active-assisted rehabilitation therapy; however, HRDs do not have any standards in terms of development or design. Although the categorization of an injury’s severity can guide a patient into seeking proper assistance, rehabilitation devices do not have a set standard to provide a solution from the beginning to the end stages of recovery. In this paper, HRDs are defined and compared by their mechanical designs, actuation mechanisms, control systems, and therapeutic strategies. Furthermore, devices with conducted clinical trials are used to determine the future development of HRDs. After evaluating the abilities of 35 devices, it is inferred that standard characteristics for HRDs should include an exoskeleton design, the incorporation of challenge-based and coaching therapeutic strategies, and the implementation of surface electromyogram signals (sEMG) based control.

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“…PowerGrip [62] The PowerGrip exoskeleton device provides safe actuation over the hand using a linkage-based system and high-torque servo motors…”

Section: Name Descriptionmentioning

confidence: 99%

Hand Rehabilitation Devices: A Comprehensive Systematic Review

et al. 2022

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“…Fraktur/defek tulang tengkorak (cranial bone defects) harus menjadi perhatian karena apabila fraktur pada tulang tengkorak mendapa tkan penanganan yang sedikit tidak tepat, akan mengakibatkan cedera yang lebih parah terhadap otak dan cacat permanen fisik pada korban [2][3][4]. pencetakan prostesis kaki palsu, tangan palsu dan ortosis, exoskeleton post stroke, perencanaan bedah [6][7][8][9][10][11].…”

Section: Pendahuluan Erdasarkan Who Dalam Laporan "Global Statusunclassified

Rancang Bangun Bio 3D Printer Menggunakan Material Biocompatibel Peek

Asskhaaf¹,

Nurhadi²,

Kuswanto³

2022

JTITS

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“…The human hand is the most dexterous part of human body [1][2][3] and enables people to interact with the external environment, including the activities of daily living (ADL). Voluntary hand movement control is typically impaired after a cerebral stroke, also known as a cerebral vascular accident (CVA), which is one of the main causes of motor disability, with an incidence of 15 million people worldwide per year [4]. More than 40% of stroke survivors suffer from chronic contralateral upper limb hemiparesis [5].…”

Section: Introductionmentioning

confidence: 99%

Design of a 3D-Printed Hand Exoskeleton Based on Force-Myography Control for Assistance and Rehabilitation

et al. 2022

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Voluntary hand movements are usually impaired after a cerebral stroke, affecting millions of people per year worldwide. Recently, the use of hand exoskeletons for assistance and motor rehabilitation has become increasingly widespread. This study presents a novel hand exoskeleton, designed to be low cost, wearable, easily adaptable and suitable for home use. Most of the components of the exoskeleton are 3D printed, allowing for easy replication, customization and maintenance at a low cost. A strongly underactuated mechanical system allows one to synergically move the four fingers by means of a single actuator through a rigid transmission, while the thumb is kept in an adduction or abduction position. The exoskeleton’s ability to extend a typical hypertonic paretic hand of stroke patients was firstly tested using the SimScape Multibody simulation environment; this helped in the choice of a proper electric actuator. Force-myography was used instead of the standard electromyography to voluntarily control the exoskeleton with more simplicity. The user can activate the flexion/extension of the exoskeleton by a weak contraction of two antagonist muscles. A symmetrical master–slave motion strategy (i.e., the paretic hand motion is activated by the healthy hand) is also available for patients with severe muscle atrophy. An inexpensive microcontroller board was used to implement the electronic control of the exoskeleton and provide feedback to the user. The entire exoskeleton including batteries can be worn on the patient’s arm. The ability to provide a fluid and safe grip, like that of a healthy hand, was verified through kinematic analyses obtained by processing high-framerate videos. The trajectories described by the phalanges of the natural and the exoskeleton finger were compared by means of cross-correlation coefficients; a similarity of about 80% was found. The time required for both closing and opening of the hand exoskeleton was about 0.9 s. A rigid cylindric handlebar containing a load cell measured an average power grasp force of 94.61 N, enough to assist the user in performing most of the activities of daily living. The exoskeleton can be used as an aid and to promote motor function recovery during patient’s neurorehabilitation therapy.

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Power Grip Exoskeleton Design as Rehabilitation Devices for Post-Stroke Survivors

Cited by 3 publications

References 6 publications

Hand Rehabilitation Devices: A Comprehensive Systematic Review

Hand Rehabilitation Devices: A Comprehensive Systematic Review

Rancang Bangun Bio 3D Printer Menggunakan Material Biocompatibel Peek

Design of a 3D-Printed Hand Exoskeleton Based on Force-Myography Control for Assistance and Rehabilitation

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