Download or read book Mechatronic Design of an ISO 22675 Prosthetic Foot Tester written by ZhiYi Liang (S.B.) and published by . This book was released on 2019 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt: Researchers in the Global Engineering and Research Lab (GEAR Lab) at MIT have been actively working on an improved design of the most widely distributed prosthetic foot in India, known as the Jaipur Foot. By developing an ISO 22675 prosthetic foot life cycle tester, researchers in GEAR Lab can test the durability of the prosthetic designs and fulfill the life cycle requirements. This thesis explores the mechatronic design of an ISO 22675 prosthetic foot life cycle tester and its contribution towards establishing fatigue testing infrastructure for prosthetics in GEAR Lab. It is broken down into three sub-systems: mechanical design, electrical design, and control architecture. It also serves as a documentation file detailing the engineering design decisions that were made during the development of the project. By building upon a mechanical framework that was established by past researchers, mechanical redesigns were conducted on the force loading assembly and the pivoting loading platform. The redesigned mechanical assembly were tested to be able to sustain maximum test force level with a safety factor of at least 1.5. The redesigned structure also provides adjustability to four crucial geometric parameters specified by the ISO 22675 standard and enables testing of prosthetic foot ranging from 23 cm to 31 cm in length. In addition, a system control PCB was designed and developed to serve as an electrical communication hub for reliable communication between the host controller LabVIEW myRIO-1900, various sensors, and the two actuators responsible for applying the test force and rotating the loading platform. A control architecture was developed and implemented through a LabVIEW parallel timed loop control structure to execute the control loop at a rate of 1kHz to reliably control both the stepper motor and the servo in parallel, read sensor states and display system current real time state through a graphical user interface.

Download or read book Design of a Novel Mechatronic System to Test Prosthetic Feet Under Specific Walking Activity Loads and Evaluate Their Lower Leg Trajectory Error written by Heidi V. Peterson and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lower limb amputees, numbered at more than 40 million globally, are challenged with limited mobility due to prosthetic devices that do not fully restore the functionalities of their biological limbs. While commercially available energy storage and return feet do restore some of the functionalities of a missing limb, the development and use of these prosthetic devices are limited by the current design, evaluation, and prescription processes. This is because the connection between the combined mechanical characteristics of a foot and user outcomes, such as mobility, comfort, and walking effort, is not fully understood. The lower leg trajectory error (LLTE) is a novel prosthetic foot performance metric that provides a quantitative connection between the mechanical characteristics of a foot and the expected gait of an amputee. Thus far, the LLTE value of a foot has only been calculated via simulation, which limits the practical use of the metric in prosthetic foot design, evaluation, and prescription. One way to systematically measure the LLTE value of a physical prosthetic foot would be through a mechanical bench test, but the capabilities of existing bench testing devices are insufficient due to limited degrees of actuation and reported accuracy. The purpose of this work was to design the Prosthetic Foot Testing Device (PFTD), a mechatronic testing device that could apply specific and uncoupled GRFs to any CoP on a foot and measure its deflection, through which it could measure the LLTE value and thus predict walking performance of any passive prosthetic foot. First, we determined high-level functional requirements of the PFTD, including the ranges of reference loads and prosthetic foot deflections as well as the LLTE measurement accuracy, such that the PFTD could meaningfully measure the full range of commercially available prosthetic feet. Second, we derived the relationships between the variables used to calculate the LLTE metric and those controlled or measured by the PFTD. Third, we used these relationships to design the PFTD and perform sensitivity analysis to ensure it could meaningfully and accurately measure the LLTE value of any passive prosthetic foot. In future work, the PFTD will be built, validated, and used to measure and compare the LLTE values of various prosthetic feet. The PFTD and theory presented herein may become a new tool in the prosthetics industry to systematically and amputee-independently measure and compare the performance of prosthetic devices using the LLTE value as a universal metric, which could ultimately improve the development and prescription processes of prostheses.

Download or read book Prosthetics written by International Organization for Standardization and published by . This book was released on 2006 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Prosthetics Testing of Ankle foot Devices and Foot Units Requirements and Test Methods ISO 22675 2016 written by and published by . This book was released on 2016 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Experimental Validation of the Lower Leg Trajectory Error an Optimization Metric for Prosthetic Feet written by Victor Prost (S.M.) and published by . This book was released on 2017 with total page 75 pages. Available in PDF, EPUB and Kindle. Book excerpt: In India alone, there are about one million people with lower limb amputation who require significantly more effort to walk than able-bodied individuals. They are subject to social stigmas preventing them from employment and independent living. There is a gap between the high-performance prosthetic feet in the United States that come at a cost of thousands of dollars and affordable prostheses in the developing world, which lack quality, durability and performance. The aim of this project was to design a high-performance, mass-manufacturable passive prosthetic foot for Indian amputees that complies with international standards at an affordable cost. This work was conducted in collaboration with Bhagwan Mahaveer Viklang Sahayata Samiti (BMVSS, the Jaipur Foot organization), in Jaipur, India. Through a novel, quantitative method called Lower Leg Trajectory Error (LLTE) which maps the mechanical design of a prosthetic foot to its biomechanical performance, we can optimize the compliance and geometry of a passive prosthesis to replicate able-bodied gait and loading on the foot using affordable materials. This thesis is focused on evaluating the accuracy and validity of the LLTE as a novel design tool. To validate feet designed using the LLTE, field trials and clinical testing were performed on prosthetic feet prototypes with varying stiffnesses and geometries. The novel merits of these prototypes are that they can replicate a similar quasi-stiffness and range of motion of a physiological ankle using interchangeable custom U-shaped constant stiffness springs ranging from 1.5 to 24 Nm/deg and having up to 30' of range of motion. Initial testing conducted using these feet validated the consitutive model of the LLTE and suggested that prosthetic feet designed with lower LLTE values could offer benefits to the user. In future work, the validated design tool will be used to create high-performance, low-cost and mass-manufacturable prosthetic feet for amputees, throughout the developing world and in the developed world.

Download or read book Prosthetics Testing of Ankle Foot Devices and Foot Units Requirements and Test Methods written by British Standards Institute Staff and published by . This book was released on 1916-07-30 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: Artificial limbs, Prosthesis, Prosthetic devices, Ankles, Feet (anatomy), Performance testing, Mechanical testing, Loading, Static loading, Cyclic loading, Strength of materials, Fatigue testing, Torsion testing, Reference point determination, Conformity

Download or read book Prosthetics Structural Testing of Lower limb Prostheses written by International Organization for Standardization and published by . This book was released on 2016 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluating Use of a Robotic Prosthetic Foot Emulator to Test drive Prosthetic Feet in People with Lower Limb Amputation written by Elizabeth Gabrielle Halsne and published by . This book was released on 2021 with total page 195 pages. Available in PDF, EPUB and Kindle. Book excerpt: Selection of a prosthetic foot is an important decision for lower limb prosthesis prescription. Without objective evidence to guide foot prescription, clinicians (i.e., physicians and prosthetists) rely on their expertise to best match a foot to a patient’s functional goals. However, persons with lower limb amputation typically cannot usually try different prosthetic feet before one is ultimately selected. The robotic prosthetic foot emulator (PFE) is a technological advancement that could facilitate a test-driving approach to foot selection, in which the prosthesis user quickly trials several prosthetic feet and then contributes their experiential input to the decision-making process. This dissertation used quantitative and qualitative approaches to assess use of the PFE for test-driving prosthetic feet. First, quantitative procedures to emulate the angular stiffness of commercial feet used in the PFE were developed and validated. Mechanical testing procedures were used to collect angular stiffness data for a variety of commercial prosthetic forefeet. PFE foot profiles were created from these data and mechanical testing was repeated with the emulated feet to evaluate the accuracy of the emulation. Angular stiffness of emulated feet was significantly correlated with that of respective commercial feet. Mean differences in angular stiffness between emulated and commercial feet were less than 1%, and were independent of prosthetic foot type and example foot sizes or intended user body weights. Participants with lower limb amputation (LLA) then used both the PFE and commercial feet to complete a test-driving protocol, before completing qualitative, semi-structured interviews with an investigator. The purpose of the interviews was to develop a grounded theory of the experience of prosthetic foot prescription from the perspective of prosthesis users. The core category was the relationship between knowledge about prosthetic feet and decision-making power. Participants described prosthetic foot prescription as an educational journey. Relationships with clinicians and peers with LLA were recognized as highly valued and capable of influencing the quality of the foot prescription experience. Participants also noted the importance of their individuality and preferences for the extent of being engaged in decision-making. Test-driving accelerated users’ education about feet options and facilitated discussion with clinicians. Therefore, complementary findings from these two studies support the potential for future use of the PFE for test-driving. Further research may be warranted to evaluate the use of the PFE and test-driving to augment prosthetic foot prescription processes.

Download or read book Design and Mechanical Validation of Commercially Viable Personalized Passive Prosthetic Feet written by Charlotte Méry Folinus and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis aims to understand how a personalized, affordable prothetic foot can be realized for a clinical-commercial setting. First, we evaluate stakeholder needs and identify the flows of products, capital, and services between prosthetics suppliers, distributors, prosthetists, amputees, and insurance providers. We elucidate the design requirements for a personalized prosthetic foot that can be manufactured, distributed, and clinically provided by Hanger, a current leader in both product distribution and patient care in orthotics and prosthetics.

Download or read book Fundamental Orthopedic Management for the Physical Therapist Assistant written by Robert C. Manske and published by Elsevier Health Sciences. This book was released on 2015-05-22 with total page 633 pages. Available in PDF, EPUB and Kindle. Book excerpt: - NEW Differential Diagnosis and Emergent Conditions chapter shows how similar symptoms can mask potentially dangerous pathologies and conditions, and may require re-evaluation by the supervising therapist. - NEW Musculoskeletal Imaging chapter explains in basic terms the various types of musculoskeletal imaging used when examining musculoskeletal injuries. - NEW Orthopedic Management Concepts Specific to Women chapter covers the issues, pathology, and progression of women's health issues as they relate to physical rehabilitation. - NEW! Full-color design and illustrations add clarity to anatomy and procedural drawings and make it easier to learn important concepts. - NEW! Important Concepts highlight useful tips and tricks of patient practice. - NEW student resources on the Evolve companion website include critical thinking applications, weblinks to related sites, and references with links to Medline® abstracts.

Download or read book Proceedings of the International Conference of Mechatronics and Cyber MixMechatronics 2020 written by Gheorghe Ion Gheorghe and published by Springer Nature. This book was released on 2020-07-17 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents state-of-the-art research in the field of mechatronics and cyber-mixmechatronics, gathering papers from almost all continents. Featuring contributions by research scholars in both government-financed institutions and in the business environment, it offers a clear picture of the innovations emerging in the field. The book is not limited to mechatronics, but also covers all the smart technical sciences, and discusses promising medical applications based on nanotechnologies. As such, it is a valuable resource for students wanting to learn from leading scholars, as well as for researchers in all areas of engineering.

Download or read book Mechanical Behavior of Materials written by Norman E. Dowling and published by Prentice Hall. This book was released on 2007 with total page 912 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprehensive in scope and readable, this book explores the methods used by engineers to analyze and predict the mechanical behavior of materials. Author Norman E. Dowling provides thorough coverage of materials testing and practical methods for forecasting the strength and life of mechanical parts and structural members.

Download or read book Psychoprosthetics written by Pamela Gallagher and published by Springer Science & Business Media. This book was released on 2007-11-29 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: Psychoprosthetics is defined as the study of psychological aspects of prosthetic use and of rehabilitative processes in those conditions that require the use of prosthetic devices. Psychoprosthetics: State of the Knowledge brings together, into one easily accessible volume, the most recent and exciting research and knowledge in this new field

Download or read book Intermediate Statistics written by James Stevens and published by Psychology Press. This book was released on 2000-08-01 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: Intermediate Statistics fully integrates SAS and SPSS. The chapter on factorial ANOVA features thorough discussions of the unequal cell size case and interpreting effects in three-way designs, and an extensive computer example of real data which integrates many of the concepts. In addition, there are substantial chapters on covariance and repeated measures analysis. Special features of this second edition include: *a new chapter on multiple regression; *inclusion of SPSS for Windows 8.0 and Statview; and *Pass 6.0 for power analysis.

Download or read book Prosthetics and Orthotics written by Ron Seymour and published by Lippincott Williams & Wilkins. This book was released on 2002 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt: Focusing on the lower extremities and spine, this extensively illustrated text presents a problem-solving approach to the evaluation and prescription of prosthetics and orthotics in physical therapy interventions. Prosthetics and Orthotics presents the latest developments in materials and fabrications, an in-depth analysis of gait deviations and interventions, conditions, psychosocial issues, biomechanics, and more. This invaluable resource also includes pediatric and geriatric perspectives, scientific literature supporting evidence-based practice, exercise and functional activities for the patient, case studies following the APTA's "Guide to Physical Therapist Practice", critical thinking questions, lab activities and practical applications.

Download or read book Atlas of Limb Prosthetics written by American Academy of Orthopaedic Surgeons and published by Amer Academy of Orthopaedic. This book was released on 2002-01-01 with total page 930 pages. Available in PDF, EPUB and Kindle. Book excerpt: Newly available after being out of print for several years, this is the definitive reference on the surgical and prosthetic management of acquired or congenital limb loss. Covers indications for amputation vs. limb salvage for trauma, peripheral vascular disease, and tumours; indications for prostheses for amputation levels; and rehabilitation approaches.

Download or read book Lower limb Prosthetics written by Norman Berger and published by . This book was released on 1997 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: