Automated setup of functional electrical stimulation for drop foot using a novel 64 channel prototype stimulator and electrode array: Results from a gait-lab based study

Heller, Ben; Clarke, Alison J.; Good, Tim; Healey, Timothy J.; Nair, Siva; Pratt, E.; Reeves, Mark L.; Meulen, J.M. van der; Barker, Anthony T.

doi:10.1016/j.medengphy.2012.03.012

Cited by 53 publications

(39 citation statements)

References 10 publications

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“…Automated setup time averaged 9 minutes, plus 5 minutes to don the equipment. Despite the challenges associated with unsupervised use, including the need for users to correctly align the ShefStim, placed in a pocket of a leg-mounted sleeve, and the remote on their shoe, speed and foot response with ShefStim, evaluated in a gait laboratory at the end of the 2 week period showed results comparable with the previous study by Heller [6]. The study demonstrated, for the first time, that array-based automated setup FES system for foot-drop can be successfully used without technical support outside of the laboratory environment.…”

Section: First Take-home Study Of Shefstimsupporting

confidence: 72%

“…Outcome measures were walking speed, foot angle at initial contact and the Borg Rating of Perceived Exertion. As described in Heller et al [6], the results showed that when setup using ShefStim subjects' walking speed, dorsiflexion and frontal plane ankle angle at initial contact were all broadly comparable with clinician setup and, apart from walking speed, better than patient setup. The study demonstrated for the first time that fully automated setup of an array stimulator is feasible in a population with drop foot of central origin.…”

Section: Laboratory-based Clinical Studysupporting

confidence: 56%

“…The study is reported in detail elsewhere [6], so in this paper, we focus on the improvements made to the stimulator hardware and implementation of the search algorithm, and provide an overview of the laboratorybased study involving subjects with drop foot.…”

Section: First Lab-based Demonstration Of Shefstimmentioning

confidence: 99%

“…Such an approach greatly reduces the likelihood of large errors in electrode placement, but the user is still fully responsible for selecting the correct stimulation level each time the system is donned. Interestingly, despite improvements in both stimulator designs and patient education, two recent studies demonstrated that when patients set up their stimulators without clinician support, the resultant foot response is often less than optimal [6,7].…”

Section: Introductionmentioning

confidence: 99%

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A review of the design and clinical evaluation of the ShefStim array-based functional electrical stimulation system

Kenney

Heller

Barker

et al. 2016

Medical Engineering & Physics

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Functional electrical stimulation has been shown to be a safe and effective means of correcting foot drop of central neurological origin. Current surface-based devices typically consist of a single channel stimulator, a sensor for determining gait phase and a cuff, within which is housed the anode and cathode. The cuff-mounted electrode design reduces the likelihood of large errors in electrode placement, but the user is still fully responsible for selecting the correct stimulation level each time the system is donned. Researchers have investigated different approaches to automating aspects of setup and/or use, including recent promising work based on iterative learning techniques. This paper reports on the design and clinical evaluation of an electrode array-based FES system for the correction of drop foot, ShefStim. The paper reviews the design process from proof of concept lab-based study, through modelling of the array geometry and interface layer to array search algorithm development. Finally, the paper summarises two clinical studies involving patients with drop foot. The results suggest that the ShefStim system with automated setup produces results which are comparable with clinician setup of conventional systems. Further, the final study demonstrated that patients can use the system without clinical supervision. When used unsupervised, setup time was 14 minutes (9 minutes for automated search plus 5 minutes for donning the equipment), although this figure could be reduced significantly with relatively minor changes to the design.

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Section: First Take-home Study Of Shefstimsupporting

confidence: 72%

Section: Laboratory-based Clinical Studysupporting

confidence: 56%

Section: First Lab-based Demonstration Of Shefstimmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A review of the design and clinical evaluation of the ShefStim array-based functional electrical stimulation system

Kenney

Heller

Barker

et al. 2016

Medical Engineering & Physics

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“…Performing electrical stimulation in most cases arises two core questions: Where the optimal placement of the stimulation electrodes is and which stimulation intensity should be applied [3]. Addressing the former question, prior studies have investigated the optimal electrode placement by using electrode arrays [4]. Addressing the latter is an equivalently complex question, as parameters vary from patient to patient.…”

Section: Introductionmentioning

confidence: 99%

Smart control for functional electrical stimulation with optimal pulse intensity

Reinert

Loitz

Quandt

et al. 2016

Current Directions in Biomedical Engineering

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Abstract:Transcutaneous electrical stimulation is a common treatment option for patients suffering from spinal cord injury or stroke. Two major difficulties arise when employing electrical stimulation in patients: Accurate stimulation electrode placement and configuration of optimal stimulation parameters. Optimizing the stimulation parameters has the advantage to reduce muscle fatigue after repetitive stimulation. Here we present a newly developed system which is able to automatically find the optimal individual stimulation intensity by varying the pulse length. The effectiveness is measured with flex sensors. By adapting the stimulation parameters, the effect of muscle fatigue can be compensated, allowing for a more stable movement upon stimulation over time.

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Wearable Chemosensors: A Review of Recent Progress

Qian

Long

2017

ChemistryOpen

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In recent years, there has been growing demand for wearable chemosensors for their important potential applications in mobile and electronic healthcare, patient self‐assessment, human motion monitoring, and so on. Innovations in wearable chemosensors are revolutionizing the modern lifestyle, especially the involvement of both doctors and patients in the modern healthcare system. The facile interaction of wearable chemosensors with the human body makes them favorable and convenient tools for the detection and long‐term monitoring of the chemical, biological, and physical status of the human body at a low cost with high performance. In this Minireview, we give a brief overview of the recent advances and developments in the field of wearable chemosensors, summarize the basic types of wearable chemosensors, and discuss their main functions and fabrication methods. At the end of this paper, the future development direction of wearable chemosensors is prospected. With continued interest and attention to this field, new exciting progress is expected in the development of innovative wearable chemosensors.

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Automated setup of functional electrical stimulation for drop foot using a novel 64 channel prototype stimulator and electrode array: Results from a gait-lab based study

Cited by 53 publications

References 10 publications

A review of the design and clinical evaluation of the ShefStim array-based functional electrical stimulation system

A review of the design and clinical evaluation of the ShefStim array-based functional electrical stimulation system

Smart control for functional electrical stimulation with optimal pulse intensity

Wearable Chemosensors: A Review of Recent Progress

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