Electronic packaging of sensors for lower limb prosthetics

Lee, J. Kelly; Stoffel, Nancy; Fite, Kevin B.

doi:10.1109/ectc.2012.6248811

Cited by 7 publications

(7 citation statements)

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“…Kulkarni [20] fitted Ecoflex 00-50 1Systems and Materials for Mechatronics (SYMME) Laboratory, University Savoie Mont Blanc, Annecy, France 2Department of Informatics, Haptics Mechatronics and Medical Robotics (HaMMeR) Laboratory, King's College London, London, UK 3UCL, EPSRC Centre for Interventional and Surgical Sciences (WEISS), London, UK 4Department of Surgery and Cancer, Imperial College London, London, UK with a Yeoh model, whereas Elsayed et al [8], [21] used an Ogden model (with non-standard rectangular strips specimens at 300 mm/min crosshead speed). Pineda [22] implemented a Mooney-Rivlin model for the latter material (on non-standard specimens with a bespoke automated setup at a speed of 0.2 mm/s) and so did Lee [23], but without providing information on the experimental conditions. Silicone Elastosil M4601 was characterized following a standard test method for tensile properties of plastics in [24], or on a 115 µm thickness specimen in [25] with a Neo Hookean model.…”

Section: Introductionmentioning

confidence: 99%

Toward a Common Framework and Database of Materials for Soft Robotics

et al. 2021

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Section: Introductionmentioning

confidence: 99%

Toward a Common Framework and Database of Materials for Soft Robotics

et al. 2021

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“…Attempts to produce sensors capable of measuring the pressure within prosthetic sockets have tended to involve piezoresistive [21][22][23], piezoelectric [24][25][26], capacitive [27][28][29][30], optical sensors [31][32][33][34][35][36][37] and microelectromechanical (MEMs) sensors [38][39][40][41].…”

mentioning

confidence: 99%

“…MEMs sensors have been applied to lower limb prosthetics by a handful of researchers either as bespoke units [38,40] or through use of commercially available designs [39]. MEMs devices offer compact [38], low-cost [41] solutions to stress measurement. Typically, these sensors exhibit high linearity [38], good drift characteristics [39] and are largely unaffected by noise [41].…”

mentioning

confidence: 99%

“…MEMs devices offer compact [38], low-cost [41] solutions to stress measurement. Typically, these sensors exhibit high linearity [38], good drift characteristics [39] and are largely unaffected by noise [41]. Sensors may be arranged to measure both normal and shear forces [38,40,41].…”

mentioning

confidence: 99%

“…Typically, these sensors exhibit high linearity [38], good drift characteristics [39] and are largely unaffected by noise [41]. Sensors may be arranged to measure both normal and shear forces [38,40,41]. However, issues with hysteresis have been noted [38,39] and limited application has been presented to clinical scenarios [40].…”

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confidence: 99%

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Examination of the Performance Characteristics of Velostat as an In-Socket Pressure Sensor

2020

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Velostat is a low-cost, low-profile electrical bagging material with piezoresistive properties, making it an attractive option for in-socket pressure sensing. The focus of this research was to explore the suitability of a Velostatbased system for providing real-time socket pressure profiles. The prototype system performance was explored through a series of bench tests to determine properties including accuracy, repeatability and hysteresis responses, and through participant testing with a single subject. The fabricated sensors demonstrated mean accuracy errors of 110 kPa and significant cyclical and thermal drift effects of up to 0.00715 V/cycle and leading to up to a 67% difference in voltage range respectively. Despite these errors the system was able to capture data within a prosthetic socket, aligning to expected contact and loading patterns for the socket and amputation type. Distinct pressure maps were obtained for standing and walking tasks displaying loading patterns indicative of posture and gait phase. The system demonstrated utility for assessing contact and movement patterns within a prosthetic socket, potentially useful for improvement of socket fit, in a low cost, low profile and adaptable format. However, Velostat requires significant improvement in its electrical properties before proving suitable for accurate pressure measurement tools in lower limb prosthetics.

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Advancements in Textile-Based sEMG Sensors for Muscle Fatigue Detection: A Journey from Material Evolution to Technological Integration

Medagedara,

Ranasinghe,

Lalitharatne

et al. 2024

ACS Sens.

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Textile-based surface electromyography (sEMG) electrodes have emerged as a prominent tool in muscle fatigue assessment, marking a significant shift toward innovative, noninvasive methods. This review examines the transition from metallic fibers to novel conductive polymers, elastomers, and advanced material-based electrodes, reflecting on the rapid evolution of materials in sEMG sensor technology. It highlights the pivotal role of materials science in enhancing sensor adaptability, signal accuracy, and longevity, crucial for practical applications in health monitoring, while examining the balance of clinical precision with user comfort. Additionally, it maps the global sEMG research landscape of diverse regional contributors and their impact on technological progress, focusing on the integration of Eastern manufacturing prowess with Western technological innovations and exploring both the opportunities and challenges in this global synergy. The integration of such textile-based sEMG innovations with artificial intelligence, nanotechnology, energy harvesting, and IoT connectivity is also anticipated as future prospects. Such advancements are poised to revolutionize personalized preventive healthcare. As the exploration of textilebased sEMG electrodes continues, the transformative potential not only promises to revolutionize integrated wellness and preventive healthcare but also signifies a seamless transition from laboratory innovations to real-world applications in sports medicine, envisioning the future of truly wearable material technologies.

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Electronic packaging of sensors for lower limb prosthetics

Cited by 7 publications

References 10 publications

Toward a Common Framework and Database of Materials for Soft Robotics

Toward a Common Framework and Database of Materials for Soft Robotics

Examination of the Performance Characteristics of Velostat as an In-Socket Pressure Sensor

Advancements in Textile-Based sEMG Sensors for Muscle Fatigue Detection: A Journey from Material Evolution to Technological Integration

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