49 research outputs found

    Survey of auto seat design recommendations for improved comfort

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    Lear Seating Corporation, Southfield, Mich.http://deepblue.lib.umich.edu/bitstream/2027.42/1058/2/85462.0001.001.pd

    Towards evidence-based classification for paralympic running and throwing events

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    Design Principles for FES Concept Development

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    © Cranfield University 2013. All rights reserved. No part of this publication may be reproduced without the written permission of the copyright owner.A variety of pathologies can cause injury to the spinal cord and hinder movement. A range of equipment is available to help spinal injury sufferers move their affected limbs. One method of rehabilitation is functional electrical stimulation (FES). FES is a technique where small electrical currents are applied to the surface of the user’s legs to stimulate the muscles. Studies have demonstrated the benefits of using this method and it has also been incorporated into a number of devices. The aim of the project was to produce a number of designs for a new device that uses FES technology. The project was completed in conjunction with an industrial partner. A review of the literature and consultation with industrial experts suggested a number of ways current devices could be improved. These included encouraging the user to lean forwards while walking and powering the device using a more ergonomic method. A group of designers were used to produce designs that allowed the user to walk with a more natural gait and avoided cumbersome power packs. The most effective of these designs were combined to form one design that solved both problems. A 3-dimensional model of this design was simulated using computer-aided design software. Groups of engineers, scientists and consumers were also invited to provide input on how a new device should function. Each of these groups provided a design that reflected their specific needs, depending on their experience with similar technology. Low level prototypes were produced of these designs. A group of designers were also used to design concepts for a functional electrical stimulation device based on an introduction given by industry experts. Each of the designs was presented to experienced professionals to obtain feedback. A set of guidelines were also produced during the project that instructed how to create the designs

    Design and Development of Assistive Robots for Close Interaction with People with Disabilities

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    People with mobility and manipulation impairments wish to live and perform tasks as independently as possible; however, for many tasks, compensatory technology does not exist, to do so. Assistive robots have the potential to address this need. This work describes various aspects of the development of three novel assistive robots: the Personal Mobility and Manipulation Appliance (PerMMA), the Robotic Assisted Transfer Device (RATD), and the Mobility Enhancement Robotic Wheelchair (MEBot). PerMMA integrates mobility with advanced bi-manual manipulation to assist people with both upper and lower extremity impairments. The RATD is a wheelchair mounted robotic arm that can lift higher payloads and its primary aim is to assist caregivers of people who cannot independently transfer from their electric powered wheelchair to other surfaces such as a shower bench or toilet. MEBot is a wheeled robot that has highly reconfigurable kinematics, which allow it to negotiate challenging terrain, such as steep ramps, gravel, or stairs. A risk analysis was performed on all three robots which included a Fault Tree Analysis (FTA) and a Failure Mode Effect Analysis (FMEA) to identify potential risks and inform strategies to mitigate them. Identified risks or PerMMA include dropping sharp or hot objects. Critical risks identified for RATD included tip over, crush hazard, and getting stranded mid-transfer, and risks for MEBot include getting stranded on obstacles and tip over. Lastly, several critical factors, such as early involvement of people with disabilities, to guide future assistive robot design are presented

    Working with Chronic Musculoskeletal Disorders : Good Practice Advice Report

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    This report takes an in-depth look at working with chronic musculoskeletal disorders (MSDs) and makes a clear case for the benefits of enabling those with chronic conditions to remain in work. It highlights the importance of designing inclusive workplaces and sets out principles for managing chronic MSDs, with prevention, early intervention, and effective, participative rehabilitation and return-to-work planning being identified as key. Good practice examples detail a wide range of workplace adjustments made to accommodate individuals with MSDs, from offering flexitime to providing the right tools and ergonomic equipment. This comprehensive practical advice is complemented by broader recommendations for policy-makers

    An ergonomic evalution of equipment to support patient movement and transfer in the ambulance service

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    It is commonly accepted that ambulance staff undertake a large amount of lifting and handling in their daily work. Their primary role is to provide pre-hospital care and to transport sick and injured people to hospital. The emergency nature of the job means that ambulance workers have to assist people who are incapable of moving themselves in awkward and potentially hazardous environments. While safer lifting policies have been introduced ambulance workers still lift weights which other healthcare workers can avoid. However since the introduction of manual handling regulations and more recently CEN standards, ambulance services and manufacturers have been trying to find new ways of moving and transferring patients. Ambulance services have purchased new equipment to reduce musculoskeletal risks but there is little scientific evidence to support their purchasing choices. This thesis presents two case studies describing ergonomic equipment evaluations of stretcher loading systems and mobility equipment to provide a scientific basis to support purchasing decisions. Case study one is a comparative analysis of stretcher loading equipment used in UK ambulance services. The study was carried out in two phases. Phase 1 was a field study which used observation and interview methods to identify issues affecting equipment use in a range of environments. Phase 2 was a simulation study which used task simulation to assess the postures adopted during loading and unloading activities with each system. Both phases identified the tail lift as the preferred system to reduce manual handling and improve patient and operator safety. Case study two is a comparative evaluation of mobility equipment. User trials were carried out to evaluate 12 transport chairs and 4 stretchers for Accident and Emergency and Patient Transport Service staff to identify preferred equipment for each team. 16 staff assessed the equipment by conducting task simulations and completing questionnaires for each product. Postures adopted during the tasks were assessed using Rapid Entire Body Assessment. The mechanised stair climber chair was the preferred chair for both teams. The stretcher analysis was inconclusive. This thesis has used two case studies to establish a protocol for field and lab based evaluations of movement and transfer equipment in the future for the ambulance vehicle. A more comprehensive procurement process is recommended to include detailed ergonomic evaluation, ensuring that the end user is fully represented. The thesis concludes that automation is way forward to reduce manual handling risks posed to ambulance workers. The output from case study 1 (tail lift) has been included in the national specification for future Emergency Ambulances in the UK.EThOS - Electronic Theses Online ServiceGBUnited Kingdo

    Inclusive adventure by design : the development of opportunities in outdoor sport for disabled people through co-ordinated people centred research and development in design and coaching

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    Structured to help readers from a range of disciplines, the thesis looks at the creation of opportunities for participation in adventure sport, specifically the development of a postural support for intermediate level performers with spinal cord injury in sea kayaking. The research has shown that it is possible to increase the performance level of disabled athletes in paddle sport through the development of appropriate adaptive equipment, which in turn promotes inclusion and the broadening of opportunities. This research project takes place against a backdrop of national events and developments; notably, changes in UK legislation to do with disability access (DDA 1995), and developments in legislation to do with outdoor safety. The research also takes place against a backdrop of national campaigns, such as the ‘Campaign for Adventure’, and an increasing number of drives to make the UK’s population more active. The broad-based multidisciplinary approach is in line with reported priorities in international disability sport research, while encompassing paddlesport specific criteria. The research takes the approach of design research to develop the product. Initially the reported studies evaluate the design process utilising desk-based research. They then proceed to utilise design methodology in field-based short and longer expedition settings. The design process utilises existing user-centred staged design approaches to explore methods for wider application. The findings reveal that the development of opportunities in adventure sport with disabled people involves engaging with a social mess. The action of problem definition and resolution can be termed in this paradigm as a wicked problem, being that is does not have one clear solution. The information needing to be exchanged in the problem resolution can be considered as sticky, being that the research process takes place in a specialised arena characterised by sparse resources and with a multidisciplinary team. The research has informed the creation of twelve tools to support those practitioners involved in this area. Used from the bottom up or top down, they provide a common language between the participant, coach, therapist and researcher to help educate and inspire each person to understand the true nature of the problem, improve the shared understanding within the team, and thereby reducing the stickiness of the information. The effect on the development of new equipment is to improve focus and user participation, so making it easier to work within the social mess. A new postural support was designed for use by intermediate level sea kayakers with spinal cord injury, the design of which is given in study 9, which is evaluated in study 10. The study suggests that future work in this area should focus on the coordination of sport science support, further exploration of the link between design research and social change, explore the validity of the tools across a broader population, and further develop the design so that the new equipment can be of benefit to the broader population.EThOS - Electronic Theses Online ServiceGBUnited Kingdo
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