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Journal ArticleDOI

Current hand exoskeleton technologies for rehabilitation and assistive engineering

Pilwon Heo1, Gwang Min Gu1, Soojin Lee2, Kyehan Rhee2, Jung Kim1 
04 May 2012-International Journal of Precision Engineering and Manufacturing (Korean Society for Precision Engineering)-Vol. 13, Iss: 5, pp 807-824
TL;DR: A comprehensive review of hand exoskeleton technologies for rehabilitation and assistive engineering, from basic hand biomechanics to actuator technologies, is presented in this paper, where the main requirements of these hand ex-oskeleton devices are also identified and the mechanical designs of existing devices are classified.
Abstract: In this paper, we present a comprehensive review of hand exoskeleton technologies for rehabilitation and assistive engineering, from basic hand biomechanics to actuator technologies. Because of rapid advances in mechanical designs and control algorithms for electro-mechanical systems, exoskeleton devices have been developed significantly, but are still limited to use in larger body areas such as upper and lower limbs. However, because of their requirements for smaller size and rich tactile sensing capabilities, hand exoskeletons still face many challenges in many technical areas, including hand biomechanics, neurophysiology, rehabilitation, actuators and sensors, physical human-robot interactions and ergonomics. This paper reviews the state-of-the-art of active hand exoskeletons for applications in the areas of rehabilitation and assistive robotics. The main requirements of these hand exoskeleton devices are also identified and the mechanical designs of existing devices are classified. The challenges facing an active hand exoskeleton robot are also discussed.
Citations
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Journal ArticleDOI
TL;DR: This paper presents a portable, assistive, soft robotic glove designed to augment hand rehabilitation for individuals with functional grasp pathologies that has the potential to increase user freedom and independence through its portable waist belt pack and open palm design.

1,164 citations

Journal ArticleDOI
TL;DR: This paper presents a taxonomy and review of wearable haptic systems for the fingertip and the hand, focusing on those systems directly addressing wearability challenges, and reports on the future perspectives of the field.
Abstract: In the last decade, we have witnessed a drastic change in the form factor of audio and vision technologies, from heavy and grounded machines to lightweight devices that naturally fit our bodies. However, only recently, haptic systems have started to be designed with wearability in mind. The wearability of haptic systems enables novel forms of communication, cooperation, and integration between humans and machines. Wearable haptic interfaces are capable of communicating with the human wearers during their interaction with the environment they share, in a natural and yet private way. This paper presents a taxonomy and review of wearable haptic systems for the fingertip and the hand, focusing on those systems directly addressing wearability challenges. The paper also discusses the main technological and design challenges for the development of wearable haptic interfaces, and it reports on the future perspectives of the field. Finally, the paper includes two tables summarizing the characteristics and features of the most representative wearable haptic systems for the fingertip and the hand.

473 citations


Cites background or methods from "Current hand exoskeleton technologi..."

  • ...Several research groups have indeed used force reflecting hand exoskeletons for rehabilitation purposes [77], [139], [150], [161], [162], [163], [164], [165], [166]....

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  • ...[139] presented in 2012 a review on hand exoskeleton technologies for rehabiliation....

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Journal ArticleDOI
TL;DR: The major developments occurred in the history, the key milestones during the evolution and major research challenges in the present day context of hardware systems of upper-limb exoskeleton robots are presented.

323 citations

Proceedings ArticleDOI
26 May 2015
TL;DR: The design of a soft wearable exoskeleton that comprises of a glove embedded with pneumatic actuators of variable stiffness for hand assistive and rehabilitation application is presented, which could achieve hand grasping and pinching with acceptable range of motion and force.
Abstract: In this paper, we present the design of a soft wearable exoskeleton that comprises of a glove embedded with pneumatic actuators of variable stiffness for hand assistive and rehabilitation application. The device is lightweight and easily wearable due to the usage of soft pneumatic actuators. A key feature of the device is the variable stiffness of the actuators at different localities that not only conform to the finger profile during actuation, but also provides customizability for different hand dimensions. The actuators can achieve different bending profiles with variable stiffness implemented at different localities. Therefore, the device is able to perform different hand therapy exercises such as full fist, straight fist, hook fist and table top. The device was characterized in terms of its range of motion and maximum force output. Experiments were conducted to examine the differences between active and passive actuation. The results showed that the device could achieve hand grasping and pinching with acceptable range of motion and force.

234 citations


Cites background from "Current hand exoskeleton technologi..."

  • ...For example, in cable driven and linkage-based devices, they are normally bulky and uncomfortable [3]; while in pneumatically driven devices, precise attachment of actuators to the joint rotational centers is required and longer setup time is expected [4]....

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Journal ArticleDOI
Domen Novak1, Robert Riener1
TL;DR: A review of existing sensor fusion methods for wearable robots, both stationary Ones such as rehabilitation exoskeletons and portable ones such as active prostheses and full-body exoskeleton, and four approaches to combining multiple modalities are presented.

210 citations

References
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Book
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TL;DR: Otsuka et al. as mentioned in this paper introduced shape memory alloy actuators and their application in medical and dental applications, including shape memory ceramics, shape memory polymers, and shape memory alloys.
Abstract: 1. Introduction K. Otsuka and C. M. Wayman 2. Mechanism of shape memory effect and superelasticity K. Otsuka and C. M. Wayman 3. Ti-Ni shape memory alloys T. Saburi 4. Cu-based shape memory alloys T. Tadaki 5. Ferrous shape memory alloys T. Maki 6. Fabrication of shape memory alloys Y. Suzuki 7.Characteristics of shape memory alloys J. Van Humbeeck, R. Stalmans 8. Shape memory ceramics K. Uchino 9. Shape memory polymers M. Irie 10. General applications of SMA's and smart materials K. N. Melton 11. The design of shape memory alloy actuators and their applications I. Ohkata and Y. Suzuki 12. Medical and dental applications of shape memory alloys S. Miyazaki.

2,969 citations


"Current hand exoskeleton technologi..." refers background in this paper

  • ...4 Shape Memory Alloy Actuator The shape memory alloy (SMA) actuator utilizes the shape memory effect (SME), which indicates the property of recovering the original shape upon heating to a critical temperature when it is deformed in the low temperature phase.(79) The materials that can be used as SMA include Ni-Ti and Cu-Al-Ni, but several other combinations exist....

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TL;DR: This paper presents a space-phasor model of A.C. machines based on artificial intelligence-based steady-state and transient analysis of electrical machines, estimators and investigates the role of magnetic saturation in the control of these machines.
Abstract: 1. Introduction 2. The space-phasor model of A.C. machines 3. Vector and direct torque control of synchronous machines 4. Vector and direct torque control of induction machines 5. Torque control of switched reluctance motors 6. Effects of magnetic saturation 7. Artificial intelligence-based steady-state and transient analysis of electrical machines, estimators 8. Self-commissioning Index

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Journal Article
TL;DR: Extensive restraint of an unaffected upper extremity and practice of functional movements with the impaired limb proved to be an effective means of restoring substantial motor function in stroke patients with chronic motor impairment identified by the inclusion criteria of this project.

1,566 citations


"Current hand exoskeleton technologi..." refers background in this paper

  • ...Highly repetitive training can also help to recover the motor function.(2,3) However, conventional therapy for stroke rehabilitation requires manual interaction with physical therapists that make the procedure labor‐intensive and raise the costs....

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Book
01 Jan 1974
TL;DR: Functional anatomy of the tibiofibular joints explains the architecture of the lower limb and orientation of the articular surfaces of the subtalar joint.
Abstract: Chapter 1: The Hip The Hip Joint (Coxo-femoral Joint) The hip: the joint at the root of the lower limb Movements of flexion at the hip joint Movements of extension at the hip joint Movements of abduction at the hip joint Movements of adduction at the hip joint Movements of axial rotation at the hip joint Movements of circumduction at the hip joint Orientation of the femoral head and of the acetabulum Relationships of articular surfaces Architeccture of the femur and of the pelvis The acetabular labrum and the ligament of the head of femur The capsular ligament of the hip joint The ligaments of the hip joint Role of the ligaments in flexion-extension Role of the ligaments in lateral-medial rotation Role of the ligaments in adduction-abduction Functional anatomy of the ligament of head of femur Coaptation of the articular surfaces of the hip joint Muscular and bony factors maintaining the stability of the hip joint The flexor muscles of the hip joint The extensor muscles of the hip joint The abductor muscles of the hip joint Hip abduction Transverse stability of the pelvis The adductor muscles of the hip joint The lateral rotator muscles of the hip joint The rotator muscles of the hip joint Inversion of muscular actions Successive recruitment of the abductor muscles Chapter 2: The Knee The axes of the knee joint Medial and lateral deviations of the knee Movements of flexion-extension Axial rotation of the knee General architecture of the lower limb and orientation of the articular surfaces The articular surfaces of flexion-extension The tibial articular surfaces in relation to axial rotation Profiles of the femoral condyles and of the tibial articular surfaces Determinants of the condylotrochlear profile Movements of the femoral condyles on the tibial plateau during flexion-extension Movements of the femoral condyles on the tibial plateau during axial rotation The articular capsule The ligamentum mucosum, the synovial plicae and the joint capacity The inter-articular menisci Meniscal displacements during flexion-extension Meniscal displacements during axial rotation - meniscal lesions Patellar displacements relative to the femur Femoropatellar relationships Patellar movements relative to the tibia The collateral ligaments of the knee Transverse stability of the knee Anteroposterior stability of the knee The peri-articular defence system of the knee The cruciate ligaments of the knee Relations between the capsule and the cruciate ligaments Direction of the cruciate ligaments Mechanical role of the cruciate ligaments Rotational stability of the extended knee Dynamic tests of the knee during medial rotation Dynamic tests for rupture of the anterior cruciate ligament Dynamic tests of the knee during lateral rotation The extensor muscles of the knee Physiological actions of the rectus femoris The flexor muscles of the knee The rotator muscles of the knee Automatic rotation of the knee Dynamic equilibrium of the knee Chapter 3: The Ankle The articular complex of the foot Flexion-extension The articular surfaces of the ankle joint The ligaments of the ankle joint Anteroposterior stability of the ankle and factors limiting flexion-extension Transverse stability of the ankle joint The tibiofibular joints Functional anatomy of the tibiofibular joints Why does the leg have two bones? Chapter 4: The Foot Axial rotation and side-to-side movements of the foot The articular surfaces of the subtalar joint Congruence and incongruence of the articular surfaces of the subtalar joint The talus: the unusual bone The ligaments of the subtalar joint The transverse tarsal joint and its ligaments Movements at the subtalar joint Movements at the subtalar and transverse tarsal joints Movements at the transverse tarsal joint Overall functioning of the posterior tarsal joints The heterokinetic universal joint of the hindfoot The ligamentous chains during inversion and eversion The cuneonavicular, intercuneiform and tarsometatarsal joints Movements at the anterior tarsal and tarsometatarsal joints Extension of the toes The compartments of the leg The interosseous and the lumbrical muscles The muscles of the sole of the foot The fibrous tunnels of the instep and of the sole of the foot The flexor muscles of the ankle The triceps surae The other extensor muscles of the ankle The abductor-pronator muscles: the fibularis muscles The adductor-supinator muscles:the tibialis muscles Chapter 5: The Plantar Vault Overview of the plantar vault The medial arch The lateral arch The anterior arch and the transverse arch of the foot The distribution of loads and static distortions of the plantar vault Architectural equilibrium of the foot Dynamic distortions of the plantar vault during walking Dynamic distortions of the plantar vault secondary to inclination of the leg on the inverted foot Dynamic distortions of the plantar vault secondary to inclination of the leg on the everted foot Adaptation of the plantar vault to the terrain The various types of pes cavus The various types of pes planus Imbalances of the interior arch Types of feet Chapter 6: Walking The move to bipedalism The miracle of bipedalism The initial step Swing phase of the gait cycle Loading response phase The footprints Pelvic oscillations The tilts of the pelvis Torsion of the trunk Swinging of the upper limbs Muscular chains during running Appendices Walking is freedom The nerves of the lower limb The sensory compartments of the lower limb (text) The sensory compartments of the lower limb: Figures 1 and 2 Bibliography Models of Articular Biomechanics

991 citations


"Current hand exoskeleton technologi..." refers background in this paper

  • ...Although the IP joints are frequently modeled and assumed as having single axis of rotation for simplicity, in fact they do not remain constant during flexion and extension.(13) The different shapes of the finger joints result in varying DOF at each joint....

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Journal ArticleDOI
TL;DR: A valid prognosis of UE function can be made within 3 and 6 weeks in patients with mild and severe UE paresis, respectively, and a valid prediction should not be expected after 6 and 11 weeks respectively, in these groups of patients.

889 citations