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Sinskey YL, Spires MC. Prostheses and Rehabilitation Principles in Pediatric Limb Deficiency. Phys Med Rehabil Clin N Am 2024; 35:707-724. [PMID: 39389632 DOI: 10.1016/j.pmr.2024.05.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/12/2024]
Abstract
Pediatric limb loss or limb deficiency is uncommon in the United Sates occurring 1 per 1943 live births per year, with a ratio of 2:1 upper to lower extremity.1 Causes include congenital limb deficiency, and less frequently, limb loss secondary to trauma, cancer, or other illnesses. Vascular disruption, particularly as seen in amniotic band syndrome, stands as the leading suspect in the multifaceted and intricate causes of congenital limb loss. Children with limb difference and deficiency present unique medical and rehabilitation challenges. Physical Medicine and Rehabilitation (PM&R) physicians are uniquely equipped to navigate these complexities. Prosthetic prescription and fabrication for children require balancing scientific principles with individual needs. A "one-size-fits-all" approach is ineffective. Many diverse factors impact prosthetic prescription and fabrication, including amputation level, residual limb characteristics, cognitive/developmental age, family goals, financial resources, and medical literacy.
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Affiliation(s)
- Yunna L Sinskey
- Department of Rehabilitation Medicine, University of Washington & VA Puget Sound Health Care System (VAPSHCS), Seattle, WA 98108, USA
| | - Mary Catherine Spires
- Department of Physical Medicine and Rehabilitation, University of Michigan, 325 East Eisenhower Parkway, Suite 200, Ann Arbor, MI 48108, USA.
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Mick S, Marchand C, de Montalivet É, Richer F, Legrand M, Peudpièce A, Fabre L, Huchet C, Jarrassé N. Smart ArM: a customizable and versatile robotic arm prosthesis platform for Cybathlon and research. J Neuroeng Rehabil 2024; 21:136. [PMID: 39103888 DOI: 10.1186/s12984-024-01423-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Accepted: 07/17/2024] [Indexed: 08/07/2024] Open
Abstract
BACKGROUND In the last decade, notable progress in mechatronics paved the way for a new generation of arm prostheses, expanding motor capabilities thanks to their multiple active joints. Yet, the design of control schemes for these advanced devices still poses a challenge, especially with the limited availability of command signals for higher levels of arm impairment. When addressing this challenge, current commercial devices lack versatility and customizing options to be employed as test-beds for developing novel control schemes. As a consequence, researchers resort to using lab-specific experimental apparatuses on which to deploy their innovations, such as virtual reality setups or mock prosthetic devices worn by unimpaired participants. METHODS To meet this need for a test-bed, we developed the Smart Arm platform, a human-like, multi-articulated robotic arm that can be worn as a trans-humeral arm prosthesis. The design process followed three principles: provide a reprogrammable embedded system allowing in-depth customization of control schemes, favor easy-to-buy parts rather than custom-made components, and guarantee compatibility with industrial standards in prosthetics. RESULTS The Smart ArM platform includes motorized elbow and wrist joints while being compatible with commercial prosthetic hands. Its software and electronic architecture can be easily adapted to build devices with a wide variety of sensors and actuators. This platform was employed in several experiments studying arm prosthesis control and sensory feedback. We also report our participation in Cybathlon, where our pilot with forearm agenesia successfully drives the Smart Arm prosthesis to perform activities of daily living requiring both strength and dexterity. CONCLUSION These application scenarios illustrate the versatility and adaptability of the proposed platform, for research purposes as well as outside the lab. The Smart Arm platform offers a test-bed for experimenting with prosthetic control laws and command signals, suitable for running tests in lifelike settings where impaired participants wear it as a prosthetic device. In this way, we aim at bridging a critical gap in the field of upper limb prosthetics: the need for realistic, ecological test conditions to assess the actual benefit of a technological innovation for the end-users.
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Affiliation(s)
- Sébastien Mick
- Institut des Systèmes Intelligents et de Robotique, ISIR, Sorbonne Université, CNRS, INSERM, 75005, Paris, France.
| | - Charlotte Marchand
- Institut des Systèmes Intelligents et de Robotique, ISIR, Sorbonne Université, CNRS, INSERM, 75005, Paris, France
| | - Étienne de Montalivet
- Institut des Systèmes Intelligents et de Robotique, ISIR, Sorbonne Université, CNRS, INSERM, 75005, Paris, France
| | - Florian Richer
- Institut des Systèmes Intelligents et de Robotique, ISIR, Sorbonne Université, CNRS, INSERM, 75005, Paris, France
| | - Mathilde Legrand
- Institut des Systèmes Intelligents et de Robotique, ISIR, Sorbonne Université, CNRS, INSERM, 75005, Paris, France
| | - Alexandre Peudpièce
- Institut des Systèmes Intelligents et de Robotique, ISIR, Sorbonne Université, CNRS, INSERM, 75005, Paris, France
| | - Laurent Fabre
- Institut des Systèmes Intelligents et de Robotique, ISIR, Sorbonne Université, CNRS, INSERM, 75005, Paris, France
| | - Christophe Huchet
- Institut des Systèmes Intelligents et de Robotique, ISIR, Sorbonne Université, CNRS, INSERM, 75005, Paris, France
| | - Nathanaël Jarrassé
- Institut des Systèmes Intelligents et de Robotique, ISIR, Sorbonne Université, CNRS, INSERM, 75005, Paris, France.
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Gu Y, He L, Zeng H, Li J, Zhang N, Zhang X, Liu T. A Data-Driven Design Framework for Structural Optimization to Enhance Wearing Adaptability of Prosthetic Hands. IEEE Trans Neural Syst Rehabil Eng 2024; 32:2621-2632. [PMID: 39018213 DOI: 10.1109/tnsre.2024.3430070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/19/2024]
Abstract
Prosthetic hands have significant potential to restore the manipulative capabilities and self-confidence of amputees and enhance their quality of life. However, incompatibility between prosthetic devices and residual limbs can lead to secondary injuries such as skin pressure ulcers and restricted joint motion, contributing to a high prosthesis abandonment rate. To address these challenges, this study introduces a data-driven design framework (D3Frame) utilizing a multi-index optimization method. By incorporating motion/ pressure data, as well as clinical criteria such as pain threshold/ tolerance, from various anatomical sites on the residual limbs of amputees, this framework aims to optimize the structural design of the prosthetic socket, including the Antecubital Channel (AC), Lateral Epicondylar Region Contour (LC), Medial Epicondylar Region Contour (MC), Olecranon Region Contour (OC), Lateral Flexor/ Extensor Region (LR), and Medial Flexor/ Extensor Region (MR). Experiments on five forearm amputees verified the improved adaptability of the optimized socket compared to traditional sockets under three load conditions. The experimental results revealed a modest score enhancement on standard clinical scales and reduced muscle fatigue levels. Specifically, the percent effort of muscles and slope value of mean/ median frequency decreased by 19%, 70%, and 99% on average, respectively, and the average values of mean/ median frequency in the motion cycle both increased by approximately 5%. The proposed D3Frame in this study was applied to optimize the structural aspects of designated regions of the prosthetic socket, offering the potential to aid prosthetists in prosthesis design and, consequently, augmenting the adaptability of prosthetic devices.
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Ramlee MH, Ammarullah MI, Mohd Sukri NS, Faidzul Hassan NS, Baharuddin MH, Abdul Kadir MR. Investigation on three-dimensional printed prosthetics leg sockets coated with different reinforcement materials: analysis on mechanical strength and microstructural. Sci Rep 2024; 14:6842. [PMID: 38514731 PMCID: PMC10958049 DOI: 10.1038/s41598-024-57454-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Accepted: 03/18/2024] [Indexed: 03/23/2024] Open
Abstract
Previous research has primarily focused on pre-processing parameters such as design, material selection, and printing techniques to improve the strength of 3D-printed prosthetic leg sockets. However, these methods fail to address the major challenges that arise post-printing, namely failures at the distal end of the socket and susceptibility to shear failure. Addressing this gap, the study aims to enhance the mechanical properties of 3D-printed prosthetic leg sockets through post-processing techniques. Fifteen PLA + prosthetic leg sockets are fabricated and reinforced with four materials: carbon fiber, carbon-Kevlar fiber, fiberglass, and cement. Mechanical and microstructural properties of the sockets are evaluated through axial compression testing and scanning electron microscopy (SEM). Results highlight superior attributes of cement-reinforced sockets, exhibiting significantly higher yield strength (up to 89.57% more than counterparts) and higher Young's modulus (up to 76.15% greater). SEM reveals correlations between microstructural properties and socket strength. These findings deepen the comprehension of 3D-printed prosthetic leg socket post-processing, presenting optimization prospects. Future research can focus on refining fabrication techniques, exploring alternative reinforcement materials, and investigating the long-term durability and functionality of post-processed 3D-printed prosthetic leg sockets.
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Affiliation(s)
- Muhammad Hanif Ramlee
- Bone Biomechanics Laboratory (BBL), Department of Biomedical Engineering and Health Sciences, Faculty of Electrical Engineering, Universiti Teknologi Malaysia, Johor Bahru 81310, Johor, Malaysia.
- Bioinspired Devices and Tissue Engineering (BIOINSPIRA) Research Group, Universiti Teknologi Malaysia, Johor Bahru 81310, Johor, Malaysia.
| | - Muhammad Imam Ammarullah
- Department of Mechanical Engineering, Faculty of Engineering, Universitas Diponegoro, Semarang, 50275, Central Java, Indonesia.
- Undip Biomechanics Engineering and Research Centre (UBM-ERC), Universitas Diponegoro, Semarang, 50275, Central Java, Indonesia.
- Department of Mechanical Engineering, Faculty of Engineering, Universitas Pasundan, Bandung, 40153, West Java, Indonesia.
- Biomechanics and Biomedics Engineering Research Centre, Universitas Pasundan, Bandung, 40153, West Java, Indonesia.
| | - Nurelisya Suraya Mohd Sukri
- Bone Biomechanics Laboratory (BBL), Department of Biomedical Engineering and Health Sciences, Faculty of Electrical Engineering, Universiti Teknologi Malaysia, Johor Bahru 81310, Johor, Malaysia
| | - Nur Syafiqah Faidzul Hassan
- Bone Biomechanics Laboratory (BBL), Department of Biomedical Engineering and Health Sciences, Faculty of Electrical Engineering, Universiti Teknologi Malaysia, Johor Bahru 81310, Johor, Malaysia
| | - Muhammad Hanif Baharuddin
- Bone Biomechanics Laboratory (BBL), Department of Biomedical Engineering and Health Sciences, Faculty of Electrical Engineering, Universiti Teknologi Malaysia, Johor Bahru 81310, Johor, Malaysia
| | - Mohammed Rafiq Abdul Kadir
- Department of Biomedical Engineering, Faculty of Engineering, Universiti Malaya, 50603, Kuala Lumpur, Federal Territory of Kuala Lumpur, Malaysia
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Mandal A, Chatterjee K. 4D printing for biomedical applications. J Mater Chem B 2024; 12:2985-3005. [PMID: 38436200 DOI: 10.1039/d4tb00006d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2024]
Abstract
While three-dimensional (3D) printing excels at fabricating static constructs, it fails to emulate the dynamic behavior of native tissues or the temporal programmability desired for medical devices. Four-dimensional (4D) printing is an advanced additive manufacturing technology capable of fabricating constructs that can undergo pre-programmed changes in shape, property, or functionality when exposed to specific stimuli. In this Perspective, we summarize the advances in materials chemistry, 3D printing strategies, and post-printing methodologies that collectively facilitate the realization of temporal dynamics within 4D-printed soft materials (hydrogels, shape-memory polymers, liquid crystalline elastomers), ceramics, and metals. We also discuss and present insights about the diverse biomedical applications of 4D printing, including tissue engineering and regenerative medicine, drug delivery, in vitro models, and medical devices. Finally, we discuss the current challenges and emphasize the importance of an application-driven design approach to enable the clinical translation and widespread adoption of 4D printing.
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Affiliation(s)
- Arkodip Mandal
- Department of Materials Engineering, Indian Institute of Science, Bengaluru, Karnataka 560012, India.
| | - Kaushik Chatterjee
- Department of Materials Engineering, Indian Institute of Science, Bengaluru, Karnataka 560012, India.
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Burgess S, Beeston A, Carr J, Siempou K, Simmonds M, Zanker Y. A Bio-Inspired Arched Foot with Individual Toe Joints and Plantar Fascia. Biomimetics (Basel) 2023; 8:455. [PMID: 37887586 PMCID: PMC10604005 DOI: 10.3390/biomimetics8060455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Revised: 09/19/2023] [Accepted: 09/21/2023] [Indexed: 10/28/2023] Open
Abstract
This paper presents the design and testing of an arched foot with several biomimetic features, including five individual MTP (toe) joints, four individual midfoot joints, and plantar fascia. The creation of a triple-arched foot represents a step further in bio-inspired design compared to other published designs. The arched structure creates flexibility that is similar to human feet with a vertical deflection of up to 12 mm. The individual toe joints enable abduction-adduction in the forefoot and therefore a natural pronation motion. Adult female bone data was obtained and converted into a CAD model to accurately identify the location of bones, joints, and arches. An analytical model is presented that gives the relationship between the vertical stiffness and horizontal stiffness of the longitudinal arches and therefore allows the optimization of stiffness elements. Experimental tests have demonstrated a vertical arch stiffness of 76 N/mm which is similar to adult human feet. The range of movement of the foot is similar to human feet with the following values: dorsi-plantarflexion (28°/37°), inversion-eversion (30°/15°), and abduction-adduction (30°/39°). Tests have also demonstrated a three-point contact with the ground that is similar to human feet.
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Affiliation(s)
- Stuart Burgess
- Bristol Robotics Laboratory, School of Electrical, Electronic & Mechanical Engineering, Bristol University, Bristol BS8 1QU, UK (Y.Z.)
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Huanbutta K, Burapapadh K, Sriamornsak P, Sangnim T. Practical Application of 3D Printing for Pharmaceuticals in Hospitals and Pharmacies. Pharmaceutics 2023; 15:1877. [PMID: 37514063 PMCID: PMC10385973 DOI: 10.3390/pharmaceutics15071877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 06/28/2023] [Accepted: 06/30/2023] [Indexed: 07/30/2023] Open
Abstract
Three-dimensional (3D) printing is an unrivaled technique that uses computer-aided design and programming to create 3D products by stacking materials on a substrate. Today, 3D printing technology is used in the whole drug development process, from preclinical research to clinical trials to frontline medical treatment. From 2009 to 2020, the number of research articles on 3D printing in healthcare applications surged from around 10 to 2000. Three-dimensional printing technology has been applied to several kinds of drug delivery systems, such as oral controlled release systems, micropills, microchips, implants, microneedles, rapid dissolving tablets, and multiphase release dosage forms. Compared with conventional manufacturing methods of pharmaceutical products, 3D printing has many advantages, including high production rates due to the flexible operating systems and high drug loading with the desired precision and accuracy for potent drugs administered in small doses. The cost of production via 3D printing can be decreased by reducing material wastage, and the process can be adapted to multiple classes of pharmaceutically active ingredients, including those with poor solubility. Although several studies have addressed the benefits of 3D printing technology, hospitals and pharmacies have only implemented this process for a small number of practical applications. This article discusses recent 3D printing applications in hospitals and pharmacies for medicinal preparation. The article also covers the potential future applications of 3D printing in pharmaceuticals.
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Affiliation(s)
- Kampanart Huanbutta
- Department of Manufacturing Pharmacy, College of Pharmacy, Rangsit University, Pathum Thani 12000, Thailand
| | - Kanokporn Burapapadh
- Department of Manufacturing Pharmacy, College of Pharmacy, Rangsit University, Pathum Thani 12000, Thailand
| | - Pornsak Sriamornsak
- Department of Industrial Pharmacy, Faculty of Pharmacy, Silpakorn University, Nakhon Pathom 73000, Thailand
- Academy of Science, The Royal Society of Thailand, Bangkok 10300, Thailand
| | - Tanikan Sangnim
- Faculty of Pharmaceutical Sciences, Burapha University, 169, Saensook, Muang, Chonburi 20131, Thailand
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Ragni LB, Dlugacz SK, Sadowsky C, Cammarata G, Sala DA, Bill V, Sukhov R, Chu A. Design and Use of a 3D-Printed Dynamic Upper Extremity Orthosis for Children With Cerebral Palsy and Severe Upper Extremity Involvement: A Pilot Study. Am J Occup Ther 2023; 77:7704205060. [PMID: 37611318 DOI: 10.5014/ajot.2023.050095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/25/2023] Open
Abstract
IMPORTANCE Children with cerebral palsy (CP) and severe hand impairment have limited options for upper extremity (UE) orthoses. OBJECTIVE To (1) design and fabricate a customized low-cost, functional, three-dimensional (3D) printed dynamic upper extremity orthosis (DUEO) and (2) examine, using a comprehensive evaluation, the effect of the orthosis on the UE function of children with unilateral UE CP, Manual Ability Classification System (MACS) Levels III to V. DESIGN Pilot study. Assessments were performed pretreatment and immediately posttreatment. SETTING Hospital-based outpatient occupational therapy department. PARTICIPANTS Five patients, ages 13 to 17 yr, with CP and unilateral UE involvement MACS Levels III to V. INTERVENTION Custom forearm thumb opponens orthosis and the DUEO were designed and fabricated by a multidisciplinary team for use during eight 1-hr occupational therapy sessions targeting bimanual UE training. OUTCOMES AND MEASURES Pretreatment and posttreatment assessments included the Assisting Hand Assessment (AHA), Melbourne Assessment 2 (MA-2), Pediatric Motor Activity Log-Revised (PMAL-R), and the Pediatric Quality of Life Inventory: CP Module (PedsQL:CP). RESULTS All participants had higher posttreatment scores on at least one measure. Four had minimal clinically important differences (MCID) on the AHA. Three met MCID criteria on MA-2 subtests (one negative change). Four demonstrated improvement on the PMAL-R (one participant achieved an MCID score), and three reported improvements in more than one PedsQL:CP domain. CONCLUSIONS AND RELEVANCE This novel 3D-printed device, in combination with occupational therapy, shows promising evidence that children who score in lower MACS levels can show gains in UE function. What This Article Adds: This study demonstrates that a customized, 3D-printed dynamic orthosis, in combination with occupational therapy intervention, can facilitate UE function in children with severe hand impairment.
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Affiliation(s)
- Lori B Ragni
- Lori B. Ragni, MS, OTR/L, BCP, is Supervisor, Pediatric Occupational Therapy, Rusk Rehabilitation, NYU Langone Health, NYU Langone Orthopedic Hospital, New York, NY
| | - Stacy Kirsch Dlugacz
- Stacy Kirsch Dlugacz, MS, OTR/L, C/NDT, is Clinical Specialist, Pediatric Occupational Therapy, Rusk Rehabilitation, NYU Langone Health, NYU Langone Orthopedic Hospital, New York, NY
| | - Cali Sadowsky
- Cali Sadowsky, MS, OTR/L, is Senior Occupational Therapist, Pediatric Occupational Therapy, Rusk Rehabilitation, NYU Langone Health, NYU Langone Orthopedic Hospital, New York, NY
| | - Gabriella Cammarata
- Gabriella Cammarata, MS, is Studio Research Coordinator, Tandon School of Engineering, New York University, Brooklyn, NY
| | - Debra A Sala
- Debra A. Sala, MS, PT, is Research Coordinator, Division of Pediatric Orthopedics, Hassenfeld Children's Hospital, NYU Langone Health, New York, NY
| | - Victoria Bill
- Victoria Bill, MS, is Director, MakerSpace, and Adjunct Professor, Tandon School of Engineering, New York University, Brooklyn, NY
| | - Renat Sukhov
- Renat Sukhov, MD, is Clinical Research Associate Professor of Rehabilitation Medicine, NYU Langone Health, New York, NY
| | - Alice Chu
- Alice Chu, MD, is Associate Professor of Orthopedic Surgery and Chief, Division of Pediatric Orthopedics, Rutgers New Jersey Medical School, Newark, NJ;
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Clinical Applications of Three-Dimensional Printing in Upper Extremity Surgery: A Systematic Review. J Pers Med 2023; 13:jpm13020294. [PMID: 36836528 PMCID: PMC9961947 DOI: 10.3390/jpm13020294] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 02/02/2023] [Accepted: 02/03/2023] [Indexed: 02/10/2023] Open
Abstract
Three-dimensional printing for medical applications in surgery of the upper extremity has gained in popularity as reflected by the increasing number of publications. This systematic review aims to provide an overview of the clinical use of 3D printing in upper extremity surgery. METHODS We searched the databases PubMed and Web of Science for clinical studies that described clinical application of 3D printing for upper extremity surgery including trauma and malformations. We evaluated study characteristics, clinical entity, type of clinical application, concerned anatomical structures, reported outcomes, and evidence level. RESULTS We finally included 51 publications with a total of 355 patients, of which 12 were clinical studies (evidence level II/III) and 39 case series (evidence level IV/V). The types of clinical applications were for intraoperative templates (33% of a total of 51 studies), body implants (29%), preoperative planning (27%), prostheses (15%), and orthoses (1%). Over two third of studies were linked to trauma-related injuries (67%). CONCLUSION The clinical application of 3D printing in upper extremity surgery offers great potential for personalized approaches to aid in individualized perioperative management, improvement of function, and ultimately help to benefit certain aspects in the quality of life.
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Reimagining Prosthetic Control: A Novel Body-Powered Prosthetic System for Simultaneous Control and Actuation. PROSTHESIS 2022. [DOI: 10.3390/prosthesis4030032] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Globally, the most popular upper-limb prostheses are powered by the human body. For body-powered (BP) upper-limb prostheses, control is provided by changing the tension of (Bowden) cables to open or close the terminal device. This technology has been around for centuries, and very few BP alternatives have been presented since. This paper introduces a new BP paradigm that can overcome certain limitations of the current cabled systems, such as a restricted operation space and user discomfort caused by the harness to which the cables are attached. A new breathing-powered system is introduced to give the user full control of the hand motion anywhere in space. Users can regulate their breathing, and this controllable airflow is then used to power a small Tesla turbine that can accurately control the prosthetic finger movements. The breathing-powered device provides a novel prosthetic option that can be used without limiting any of the user’s body movements. Here we prove that it is feasible to produce a functional breathing-powered prosthetic hand and show the models behind it along with a preliminary demonstration. This work creates a step-change in the potential BP options available to patients in the future.
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Lee MY, Lee SH, Leigh JH, Nam HS, Hwang EY, Lee JY, Han S, Lee G. Functional improvement by body-powered 3D-printed prosthesis in patients with finger amputation: Two case reports. Medicine (Baltimore) 2022; 101:e29182. [PMID: 35758347 PMCID: PMC9276309 DOI: 10.1097/md.0000000000029182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Accepted: 03/08/2022] [Indexed: 11/26/2022] Open
Abstract
RATIONALE The most common upper limb amputations are finger amputations, resulting in functional limitations that lead to problems with activities of daily living or job loss. For many years, prosthetic options for finger amputations have been limited to passive prostheses. In many countries including South Korea, body-powered finger prostheses have rarely been prescribed due to high cost, lack of experience of physicians and prosthetists, low interest and no coverage by insurance benefits. We report 2 cases of work-related finger amputations in patients who received body-powered 3D-printed finger prostheses. PATIENT CONCERNS AND DIAGNOSIS Patient 1 was a 25-year-old woman with second and third finger amputations at the proximal interphalangeal level. Patient 2 was a 26-year-old man who sustained a second finger amputation at proximal interphalangeal level. INTERVENTIONS We created body-powered 3D-printed finger prostheses that mimicked distal interphalangeal joint motion through patient-driven metacarpophalangeal joint motion using a string connected to a wrist strap and a linkage system. The source code "Knick Finger" was downloaded from e-NABLE. OUTCOMES After 1 month of prosthesis training, both patients were satisfied with the prostheses and showed improved performance in patient-derived goals of cooking (patient 1) and typing on a computer (patient 2). LESSONS Over the past decade, significant advances have been made in 3D-printed prosthetics owing to their light weight, low cost, on-site fabrication, and easy customization. Although there are still several limitations in the general application of 3D-printed finger prostheses, our study suggests that for patients with finger amputations, body-powered 3D-printed finger prostheses have high potential as an additional prosthetic option to the existing passive cosmetic prostheses.
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Affiliation(s)
- Min-Yong Lee
- Department of Rehabilitation Medicine, Seoul National University Hospital, Seoul, Korea
- Rehabilitation Center, Incheon Workers’ Compensation Hospital, Incheon, Korea
| | - Seung Hak Lee
- Department of Rehabilitation Medicine, Asan Medical Center, Seoul, Korea
| | - Ja-Ho Leigh
- Department of Rehabilitation Medicine, Seoul National University Hospital, Seoul, Korea
- Department of Rehabilitation Medicine, National Traffic Injury Rehabilitation Hospital, Yangpyeong, Korea
| | - Hyung Seok Nam
- Department of Rehabilitation Medicine, Seoul National University Hospital, Seoul, Korea
- Department of Rehabilitation Medicine, UAE Sheikh Khalifa Specialty Hospital, RAK City, UAE
| | - Eun Young Hwang
- Rehabilitation Center, Incheon Workers’ Compensation Hospital, Incheon, Korea
| | - Jung Yeon Lee
- Rehabilitation Center, Incheon Workers’ Compensation Hospital, Incheon, Korea
| | - Sol Han
- Department of Rehabilitation Medicine, Seoul National University Hospital, Seoul, Korea
| | - Gangpyo Lee
- Rehabilitation Center, Incheon Workers’ Compensation Hospital, Incheon, Korea
- Rehabilitation Medicine Research Center, Incheon Workers’ Compensation Hospital, Incheon, Korea
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Open-Source 3D Printing in the Prosthetic Field—The Case of Upper Limb Prostheses: A Review. MACHINES 2022. [DOI: 10.3390/machines10060413] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Abstract
Upper limb loss alters individuals’ private and professional life. Prosthetic devices are thus a solution to supply the missing upper limb segments. Nevertheless, commercial prostheses are often unaffordable, or inaccessible, to underprivileged individuals (e.g., no health insurance, low incomes, warzone). Among potential affordable alternatives, additive manufacturing, commonly “3D printing”, has been increasingly employed. This technology offers higher availability and accessibility, and can produce complex geometrical and highly customized products, which are essential features for prostheses manufacturing. Therefore, this study aims to portray an overview of reliable open-source upper limb 3D-printed prostheses currently available. We thus searched the scientific literature and online repositories hosting 3D-printable designs. We extracted data relative to mechanical and kinematic properties, 3D printing process and efficacy for each device. We found six studies implementing open-source 3DP upper limb prostheses and twenty-five open-source designs from online databases meeting selection criteria. Devices’ technical specifications were not systematically reported. In conclusion, though open-source 3D-printed upper limb prostheses can perform some functional tasks and grasps, and are widely employed to supply limb differences, further research is mandatory to validate their usage and to prove their clinical efficacy. More guidelines are required to unify contributions from private makers and non-governmental organizations with scientific groups.
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Amin KR, Fildes JE. Bionic Prostheses: The Emerging Alternative to Vascularised Composite Allotransplantation of the Limb. Front Surg 2022; 9:873507. [PMID: 35599802 PMCID: PMC9122218 DOI: 10.3389/fsurg.2022.873507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Accepted: 04/19/2022] [Indexed: 11/15/2022] Open
Abstract
Twenty years have surpassed since the first vascularised composite allotransplantation (VCA) of the upper limb. This is an opportunity to reflect on the position of VCA as the gold standard in limb reconstruction. The paucity of recipients, tentative clinical outcomes, and insufficient scientific progress question whether VCA will remain a viable treatment option for the growing numbers of amputees. Bionic technology is advancing at a rapid pace. The prospect of widely available, affordable, safely applied prostheses with long-standing functional benefit is appealing. Progress in the field stems from the contributions made by engineering, electronic, computing and material science research groups. This review will address the ongoing reservations surrounding VCA whilst acknowledging the future impact of bionic technology as a realistic alternative for limb reconstruction.
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Affiliation(s)
- Kavit R. Amin
- Blond McIndoe Laboratories, Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester Academic Health Science Centre, Manchester, United Kingdom
- Department of Plastic Surgery & Burns, Wythenshawe Hospital, Manchester University NHS Foundation Trust, Manchester, United Kingdom
- Correspondence: Kavit R. Amin ;
| | - James E. Fildes
- The Ex-Vivo Research Centre CIC, Alderley Park, Macclesfield, United Kingdom
- The Healthcare Technologies Institute, School of Chemical Engineering, University of Birmingham, Birmingham, United Kingdom
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14
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Olsen J, Turner S, Chadwell A, Dickinson A, Ostler C, Armitage L, McGregor AH, Dupan S, Day S. The Impact of Limited Prosthetic Socket Documentation: A Researcher Perspective. FRONTIERS IN REHABILITATION SCIENCES 2022; 3:853414. [PMID: 36189046 PMCID: PMC9397974 DOI: 10.3389/fresc.2022.853414] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Accepted: 02/11/2022] [Indexed: 11/17/2022]
Abstract
The majority of limb prostheses are socket mounted. For these devices, the socket is essential for adequate prosthetic suspension, comfort, and control. The socket is unique among prosthetic components as it is not usually mass-produced and must instead be custom-made for individual residual limbs by a prosthetist. The knowledge of what constitutes "good" socket fit is gained by expert prosthetists and technicians over years of experience, and rarely documented. The reliance on tacit knowledge makes it difficult to standardize the criteria for a well-fitting socket, leading to difficulties understanding the impact of socket fit. Despite its importance, the workflow for socket fitting is often overlooked in literature. Due to the customized nature of sockets, if information is provided in literature, generally only the type of socket and suspension mechanism is noted, with information regarding the fitting and manufacturing processes omitted. In this article, the concerns, issues and consequences arising from lack of upper and lower limb socket documentation are discussed from a researcher perspective, supported by healthcare professionals and socket fabrication specialists. Key changes are proposed to the way socket manufacturing and evaluation are documented to assist future research.
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Affiliation(s)
- Jennifer Olsen
- Intelligent Sensing Laboratory, School of Engineering, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Shruti Turner
- Sackler MSk Laboratory, Department of Surgery and Cancer, Sir Michael Uren Hub, Imperial College London, London, United Kingdom
| | - Alix Chadwell
- Intelligent Sensing Laboratory, School of Engineering, Newcastle University, Newcastle upon Tyne, United Kingdom
- Human Movement and Rehabilitation Research Group, University of Salford, Salford, United Kingdom
| | - Alex Dickinson
- Faculty of Engineering and Physical Science, University of Southampton, Southampton, United Kingdom
| | - Chantel Ostler
- Portsmouth Enablement Centre, Portsmouth Hospital University National Health Service (NHS) Trust, St Marys Hospital, Portsmouth, United Kingdom
| | - Lucy Armitage
- School of Mechanical, Materials, Mechatronic and Biomedical Engineering, University of Wollongong, Wollongong, NSW, Australia
| | - Alison H. McGregor
- Sackler MSk Laboratory, Department of Surgery and Cancer, Sir Michael Uren Hub, Imperial College London, London, United Kingdom
| | - Sigrid Dupan
- Edinburgh Neuroprosthetics Laboratory, School of Informatics, University of Edinburgh, Edinburgh, United Kingdom
| | - Sarah Day
- Department of Biomedical Engineering, University of Strathclyde, Glasgow, United Kingdom
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15
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Mohamdeen YMG, Tabriz AG, Tighsazzadeh M, Nandi U, Khalaj R, Andreadis I, Boateng JS, Douroumis D. Development of 3D printed drug-eluting contact lenses. J Pharm Pharmacol 2021; 74:1467-1476. [PMID: 34928372 DOI: 10.1093/jpp/rgab173] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 11/05/2021] [Accepted: 11/25/2021] [Indexed: 12/14/2022]
Abstract
OBJECTIVES The aim of the work was to introduce 3D printing technology for the design and fabrication of drug-eluting contact lenses (DECL) for the treatment of glaucoma. The development of 3D printed lenses can effectively overcome drawbacks of existing approaches by using biocompatible medical grade polymers that provide sustained drug release of timolol maleate for extended periods. METHODS Hot melt extrusion was coupled with fusion deposition modelling (FDM) to produce printable filaments of ethylene-vinyl acetate copolymer-polylactic acid blends at various ratios loaded with timolol maleate. Physicochemical and mechanical characterisation of the printed filaments was used to optimise the printing of the contact lenses. KEY FINDINGS 3D printed lenses with an aperture (opening) and specified dimensions could be printed using FDM technology. The lenses presented a smooth surface with good printing resolution while providing sustained release of timolol maleate over 3 days. The findings of this study can be used for the development of personalised DECL in the future.
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Affiliation(s)
- Youssra Moustafa Gadelkareem Mohamdeen
- Faculty of Engineering and Science, School of Science, University of Greenwich, Chatham, Kent, UK.,Faculty of Biotechnology, October University for Modern Sciences and Arts (MSA), Cairo, Egypt
| | - Atabak Ghanizadeh Tabriz
- Faculty of Engineering and Science, School of Science, University of Greenwich, Chatham, Kent, UK.,CIPER: Centre for Innovation and Process Engineering Research, Kent, UK
| | - Mohammad Tighsazzadeh
- Faculty of Engineering and Science, School of Science, University of Greenwich, Chatham, Kent, UK
| | - Uttom Nandi
- Faculty of Engineering and Science, School of Science, University of Greenwich, Chatham, Kent, UK.,CIPER: Centre for Innovation and Process Engineering Research, Kent, UK
| | - Roxanne Khalaj
- Faculty of Engineering and Science, School of Science, University of Greenwich, Chatham, Kent, UK.,CIPER: Centre for Innovation and Process Engineering Research, Kent, UK
| | - Ioannis Andreadis
- Laboratory of Pharmaceutical Technology, Department of Pharmaceutical Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Joshua S Boateng
- Faculty of Engineering and Science, School of Science, University of Greenwich, Chatham, Kent, UK
| | - Dennis Douroumis
- Faculty of Engineering and Science, School of Science, University of Greenwich, Chatham, Kent, UK.,CIPER: Centre for Innovation and Process Engineering Research, Kent, UK
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16
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O'Brien L, Cho E, Khara A, Lavranos J, Lommerse L, Chen C. 3D-printed custom-designed prostheses for partial hand amputation: Mechanical challenges still exist. J Hand Ther 2021; 34:539-542. [PMID: 32565103 DOI: 10.1016/j.jht.2020.04.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 04/16/2020] [Accepted: 04/24/2020] [Indexed: 02/09/2023]
Abstract
STUDY DESIGN This is a technical report involving evaluation of two 3D-printed custom-designed prosthetic prototypes for an adult male with partial amputation of his dominant hand. INTRODUCTION Prosthetic solutions for partial hand amputations have progressed modestly in comparison with advances in full hands for transradial and higher amputations. 3D-printing technology allows Bespoke prosthetic design and rapid prototyping, but evidence regarding functional performance and consumer ratings of devices is lacking. PURPOSE OF THE STUDY The purpose of this study was to compare grip strength, dexterity, and consumer perceptions for two novel 3D-printed devices with a myoelectric prosthesis. METHODS This study involves a 2-year iterative design process with an input from the participant, engineers, a prosthetist, and a hand therapist. The evaluation involved standardized tests of grip/pinch strength and dexterity and participant ratings of key criteria. RESULTS Both 3D-printed devices had very poor grip and pinch strength but comparable dexterity with the myoelectric prosthesis. The participant was more satisfied with the weight and thermal attributes of the 3D-printed devices. DISCUSSION Aspects of both 3D-printed designs showed the potential for future refinements; however, the mechanical solutions to minimize force required at the wrist to activate grip are still required. CONCLUSION(S) Future design efforts should be client-centered and involve professionals with specialist prosthetic and engineering knowledge.
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Affiliation(s)
- Lisa O'Brien
- Department Occupational Therapy, Monash University, Frankston, Victoria, Australia.
| | - Emma Cho
- Department of Mechanical and Aerospace Engineering, Monash University, Clayton, Victoria, Australia
| | - Aarjav Khara
- Department of Mechanical and Aerospace Engineering, Monash University, Clayton, Victoria, Australia
| | - Jim Lavranos
- Department of Prosthetics & Orthotics, Caulfield Hospital, Caulfield, Victoria, Australia
| | - Luuk Lommerse
- Department of BioMedical Engineering, Delft University of Technology, Delft, The Netherlands
| | - Chao Chen
- Department of Mechanical and Aerospace Engineering, Monash University, Clayton, Victoria, Australia
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18
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Tabriz AG, Scoutaris N, Gong Y, Hui HW, Kumar S, Douroumis D. Investigation on hot melt extrusion and prediction on 3D printability of pharmaceutical grade polymers. Int J Pharm 2021; 604:120755. [PMID: 34052338 DOI: 10.1016/j.ijpharm.2021.120755] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Revised: 05/24/2021] [Accepted: 05/25/2021] [Indexed: 01/15/2023]
Abstract
The development of printable filaments has been identified as a critical aspect for the processing of pharmaceutical grade polymers and the fabrication of oral solid dosage forms. In this study a range of plain and drug loaded polymers were investigated and assessed for their printability in comparison to commercial filaments. Physicochemical characterizations of the polymers included differential scanning calorimetry (DSC) thermogravimetric analysis (TGA) and rheology were studied prior to Hot Melt Extrusion processing for the filament fabrication. A texture analyser was used to study the filament mechanical properties in order to derive the maximum tensile strength, Young's Modulus and elongation at break. Principal component analysis was used to compare the printability of the polymer and to identify the contribution of each mechanical property. The analysis showed that maximum tensile strength with a threshold between 15 and 20 MPa is the most critical property for the prediction of the printability. Furthermore, printable filaments were processed using Fusion Deposition Modelling technology and optimal printing parameters were identified. The study demonstrated that the prediction of filament printability is feasible by evaluating the mechanical properties.
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Affiliation(s)
- Atabak Ghanizadeh Tabriz
- Faculty of Engineering and Science, School of Science, University of Greenwich, Chatham Maritime, Chatham, Kent ME4 4TB, UK; CIPER Centre for Innovation and Process Engineering Research, Kent ME4 4TB, UK
| | - Nick Scoutaris
- Faculty of Engineering and Science, School of Science, University of Greenwich, Chatham Maritime, Chatham, Kent ME4 4TB, UK; CIPER Centre for Innovation and Process Engineering Research, Kent ME4 4TB, UK
| | - Yuchuan Gong
- Drug Product Development, Bristol Myers Squibb (formerly Celgene Corporation), 556 Morris Avenue, Summit, NJ 07901, USA.
| | - Ho-Wah Hui
- Drug Product Development, Bristol Myers Squibb (formerly Celgene Corporation), 556 Morris Avenue, Summit, NJ 07901, USA
| | - Sumit Kumar
- Drug Product Development, Bristol Myers Squibb (formerly Celgene Corporation), 556 Morris Avenue, Summit, NJ 07901, USA.
| | - Dennis Douroumis
- Faculty of Engineering and Science, School of Science, University of Greenwich, Chatham Maritime, Chatham, Kent ME4 4TB, UK; CIPER Centre for Innovation and Process Engineering Research, Kent ME4 4TB, UK.
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19
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Olsen J, Day S, Dupan S, Nazarpour K, Dyson M. 3D-Printing and Upper-Limb Prosthetic Sockets: Promises and Pitfalls. IEEE Trans Neural Syst Rehabil Eng 2021; 29:527-535. [PMID: 33587701 DOI: 10.1109/tnsre.2021.3057984] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Modernising the way upper-limb prosthetic sockets are made has seen limited progress. The casting techniques that are employed in clinics today resemble those developed over 50 years ago and there is still a heavy reliance on manual labour. Modern manufacturing methods such as 3D scanning and printing are often presented as ready-to-use solutions for producing low-cost functional devices, with public perceptions being largely shaped by the superficial media representation and advertising. The promise is that modern socket manufacturing methods can improve patient satisfaction, decrease manufacturing times and reduce the workload in the clinic. However, the perception in the clinical community is that total conversion to digital methods in a clinical environment is not straightforward. Anecdotally, there is currently a disconnect between those developing technology to produce prosthetic devices and the actual needs of clinicians and people with limb difference. In this paper, we demonstrate strengths and drawbacks of a fully digitised, low-cost trans-radial diagnostic socket making process, informed by clinical principles. We present volunteer feedback on the digitally created sockets and provide expert commentary on the use of digital tools in upper-limb socket manufacturing. We show that it is possible to utilise 3D scanning and printing, but only if the process is informed by expert knowledge. We bring examples to demonstrate how and why the process may go wrong. Finally, we provide discussion on why progress in modernising the manufacturing of upper-limb sockets has been slow yet it is still too early to rule out digital methods.
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20
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Cabibihan JJ, Alkhatib F, Mudassir M, Lambert LA, Al-Kwifi OS, Diab K, Mahdi E. Suitability of the Openly Accessible 3D Printed Prosthetic Hands for War-Wounded Children. Front Robot AI 2021; 7:594196. [PMID: 33501353 PMCID: PMC7830517 DOI: 10.3389/frobt.2020.594196] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Accepted: 12/04/2020] [Indexed: 11/13/2022] Open
Abstract
The field of rehabilitation and assistive devices is being disrupted by innovations in desktop 3D printers and open-source designs. For upper limb prosthetics, those technologies have demonstrated a strong potential to aid those with missing hands. However, there are basic interfacing issues that need to be addressed for long term usage. The functionality, durability, and the price need to be considered especially for those in difficult living conditions. We evaluated the most popular designs of body-powered, 3D printed prosthetic hands. We selected a representative sample and evaluated its suitability for its grasping postures, durability, and cost. The prosthetic hand can perform three grasping postures out of the 33 grasps that a human hand can do. This corresponds to grasping objects similar to a coin, a golf ball, and a credit card. Results showed that the material used in the hand and the cables can withstand a 22 N normal grasping force, which is acceptable based on standards for accessibility design. The cost model showed that a 3D printed hand could be produced for as low as $19. For the benefit of children with congenital missing limbs and for the war-wounded, the results can serve as a baseline study to advance the development of prosthetic hands that are functional yet low-cost.
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Affiliation(s)
- John-John Cabibihan
- Department of Mechanical and Industrial Engineering, Qatar University, Doha, Qatar
| | - Farah Alkhatib
- School of Mechanical Engineering, University of Western Australia, Perth, WA, Australia
| | - Mohammed Mudassir
- Department of Mechanical and Industrial Engineering, Qatar University, Doha, Qatar
| | - Laurent A. Lambert
- School of Public Administration and Development Economics, Doha Institute for Graduate Studies, Doha, Qatar
| | - Osama S. Al-Kwifi
- Department of Management and Marketing, Qatar University, Doha, Qatar
| | | | - Elsadig Mahdi
- Department of Mechanical and Industrial Engineering, Qatar University, Doha, Qatar
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21
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Abstract
New medical technologies can transform healthcare, and automation of processes is becoming increasingly ubiquitous within the patient care sector. Many innovative ideas arise from academia, but regulations need to be taken into account if they want to reach the market and create a real impact. This is particularly relevant for applied fields, such as prosthetics, which continuously generates cutting-edge solutions. However, it remains unclear how well the regulatory pathway is supported within universities. This study applied a data-driven assessment of available online information regarding support of medical device regulations within universities. A total of 109,200 URLs were screened for regulatory information associated with universities in the UK and the USA. The results show that based on available online data, 55% of the selected universities in the UK and 35% in the USA did not provide any support for medical device regulations. There is a big discrepancy between universities in terms of the available support, as well as the kind of information that is made accessible by the academic institutes. It is suggested that increasing support for regulatory strategies during the early phases of research and development will likely yield a better translation of technologies into clinical care. Universities can play a more active role in this.
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The Effect of Printing Parameters on Electrical Conductivity and Mechanical Properties of PLA and ABS Based Carbon Composites in Additive Manufacturing of Upper Limb Prosthetics. CRYSTALS 2020. [DOI: 10.3390/cryst10050398] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Additive manufacturing technologies are dynamically developing, strongly affecting almost all fields of industry and medicine. The appearance of electrically conductive polymers has had a great impact on the prototyping process of different electrical components in the case of upper limb prosthetic development. The widely used FFF 3D printing technology mainly uses PLA (polylactic acid) and ABS (acrylonitrile butadiene styrene) based composites, and despite their presence in the field, a detailed, critical characterization and comparison of them has not been performed yet. Our aim was to characterize two PLA and ABS based carbon composites in terms of electrical and mechanical behavior, and extend the observations with a structural and signal transfer analysis. The measurements were carried out by changing the different printing parameters, including layer resolution, printing orientation and infill density. To determine the mechanical properties, static and dynamic tests were conducted. The electrical characterization was done by measuring the resistance and signal transfer characteristics. Scanning electron microscopy was used for the structural analysis. The results proved that the printing parameters had a significant effect on the mechanical and electrical characteristics of both materials. As a major novelty, it was concluded that the ABS carbon composite has more favorable behavior in the case of additive manufacturing of electrical components of upper limb prosthetics, and they can be used as moving, rotating parts as well.
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Roche AD, Lakey B, Mendez I, Vujaklija I, Farina D, Aszmann OC. Clinical Perspectives in Upper Limb Prostheses: An Update. CURRENT SURGERY REPORTS 2019. [DOI: 10.1007/s40137-019-0227-z] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Sydney Gladman A, Garcia-Leiner M, F. Sauer-Budge A. Emerging polymeric materials in additive manufacturing for use in biomedical applications. AIMS BIOENGINEERING 2019. [DOI: 10.3934/bioeng.2019.1.1] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
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