Functional evaluation of natural sensory feedback incorporated in a hand grasp neuroprosthesis

Inmann, Andreas; Haugland, Morten Kristian

doi:10.1016/j.medengphy.2004.03.002

Cited by 26 publications

(14 citation statements)

References 13 publications

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“…Sensory feedback is fundamental to adaptive grasp and slip prevention as necessary for tasks, such as precision grips, which encompass an estimated 60% of activities of daily life [26]. Although information from the visual system aids in adaptive grasp both in the natural and prosthetic hand [27], grip forces in the absence of direct sensory feedback tend to be much higher than necessary in activities of daily life such as eating [1,19]. In prosthetics, where limiting power consumption and effort are of significant importance, this becomes a considerable drawback.…”

Section: Sensory System In Prosthetic Handsmentioning

confidence: 99%

“…Currently, functional limitations and challenges of unreliable control have motivated over 70% of amputees in the United States to select hooks for value of their functionality [17] while 30-50% do not use their hand prostheses on a regular basis [18]. One key limitation responsible for the marginal performance of prostheses in use today is the lack of sensory feedback available to the controller and the user, hindering the ability to respond in a natural and appropriate manner in accordance with the external environment [7,8,[19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Electroactive polymeric sensors in hand prostheses: Bending response of an ionic polymer metal composite

Biddiss

Chau

2006

Medical Engineering & Physics

140

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Section: Sensory System In Prosthetic Handsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Electroactive polymeric sensors in hand prostheses: Bending response of an ionic polymer metal composite

Biddiss

Chau

2006

Medical Engineering & Physics

140

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“…Since electrode arrays are used, a customized demultiplexer is connected to the stimulator. At the hand level, NMES induces flexion of the fingers joints to get a palmar grip, and extension of the fingers joints to achieve hand opening movement and consequently to release the object [35,36]. Extrinsic flexors, extrinsic extensors, thenar muscles, and lumbricals, palmar and dorsal interossei muscles are stimulated.…”

Section: Methodsmentioning

confidence: 99%

MUNDUS project: MUltimodal Neuroprosthesis for daily Upper limb Support

Pedrocchi

Ferrante

Ambrosini

et al. 2013

J NeuroEngineering Rehabil

131

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BackgroundMUNDUS is an assistive framework for recovering direct interaction capability of severely motor impaired people based on arm reaching and hand functions. It aims at achieving personalization, modularity and maximization of the user’s direct involvement in assistive systems. To this, MUNDUS exploits any residual control of the end-user and can be adapted to the level of severity or to the progression of the disease allowing the user to voluntarily interact with the environment. MUNDUS target pathologies are high-level spinal cord injury (SCI) and neurodegenerative and genetic neuromuscular diseases, such as amyotrophic lateral sclerosis, Friedreich ataxia, and multiple sclerosis (MS). The system can be alternatively driven by residual voluntary muscular activation, head/eye motion, and brain signals. MUNDUS modularly combines an antigravity lightweight and non-cumbersome exoskeleton, closed-loop controlled Neuromuscular Electrical Stimulation for arm and hand motion, and potentially a motorized hand orthosis, for grasping interactive objects.MethodsThe definition of the requirements and of the interaction tasks were designed by a focus group with experts and a questionnaire with 36 potential end-users.Five end-users (3 SCI and 2 MS) tested the system in the configuration suitable to their specific level of impairment. They performed two exemplary tasks: reaching different points in the working volume and drinking. Three experts evaluated over a 3-level score (from 0, unsuccessful, to 2, completely functional) the execution of each assisted sub-action.ResultsThe functionality of all modules has been successfully demonstrated. User’s intention was detected with a 100% success. Averaging all subjects and tasks, the minimum evaluation score obtained was 1.13 ± 0.99 for the release of the handle during the drinking task, whilst all the other sub-actions achieved a mean value above 1.6. All users, but one, subjectively perceived the usefulness of the assistance and could easily control the system. Donning time ranged from 6 to 65 minutes, scaled on the configuration complexity.ConclusionsThe MUNDUS platform provides functional assistance to daily life activities; the modules integration depends on the user’s need, the functionality of the system have been demonstrated for all the possible configurations, and preliminary assessment of usability and acceptance is promising.

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“…Small signal levels and low selectivity can limit the resolution of nerve cuffs which have been tested in humans. [111][112][113] The Utah slant electrode array (USEA) provides greater selectivity by targeting all fascicles in a nerve with a grid of up to one hundred electrode channels inserted transversely (Fig. 1E).…”

Section: Recording Interfaces To Measure Residual Muscle or Nerve Actmentioning

confidence: 99%

“…172 Nerve cuffs on the sural nerve and the palmar digital nerve have been used to detect foot contact and finger touch for closed loop FES control of foot dorsiflexion 113 and hand grasp. 112 Nerve cuffs and penetrating electrodes that target peripheral nerves are limited to signals from a single joint, skin region, or part of an organ and must reject motor signals. For monitoring multi-joint limb movements or obtaining a greater resolution of bladder activity, it may be necessary to target nerve trunks and to use specially designed electrodes that allow access to diverse nerve fibers within a single nerve bundle.…”

Section: Sensory Neural Recording Interfaces To Monitor Bladder and Lmentioning

confidence: 99%

Neuroprosthetic technology for individuals with spinal cord injury

Collinger¹,

Foldes

Bruns

et al. 2013

The Journal of Spinal Cord Medicine

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Context: Spinal cord injury (SCI) results in a loss of function and sensation below the level of the lesion. Neuroprosthetic technology has been developed to help restore motor and autonomic functions as well as to provide sensory feedback. Findings: This paper provides an overview of neuroprosthetic technology that aims to address the priorities for functional restoration as defined by individuals with SCI. We describe neuroprostheses that are in various stages of preclinical development, clinical testing, and commercialization including functional electrical stimulators, epidural and intraspinal microstimulation, bladder neuroprosthesis, and cortical stimulation for restoring sensation. We also discuss neural recording technologies that may provide command or feedback signals for neuroprosthetic devices. Conclusion/clinical relevance: Neuroprostheses have begun to address the priorities of individuals with SCI, although there remains room for improvement. In addition to continued technological improvements, closing the loop between the technology and the user may help provide intuitive device control with high levels of performance.

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Functional evaluation of natural sensory feedback incorporated in a hand grasp neuroprosthesis

Cited by 26 publications

References 13 publications

Electroactive polymeric sensors in hand prostheses: Bending response of an ionic polymer metal composite

Electroactive polymeric sensors in hand prostheses: Bending response of an ionic polymer metal composite

MUNDUS project: MUltimodal Neuroprosthesis for daily Upper limb Support

Neuroprosthetic technology for individuals with spinal cord injury

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