Searched for: subject%3A%22Prosthetics%22
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van Zanten, Jonathan (author)
Semi-active lower limb prostheses currently use variable damping to generate the gait cycle. This, however, only dissipates energy. Variable stiffness can store and release energy, making prostheses more efficient for walking. This study aims to design and evaluate a semi-active adjustable stiffness ankle-knee prosthesis that can change its...
master thesis 2024
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Smits, Jurriën (author)
Energy harvesting has gained lots of interest over the past few decades. This study explores the application of energy harvesting in lower limb prosthetic devices. The control system of a lower limb prosthesis includes sensors, wireless<br/>systems and other active components which all require battery power. In order to save some of this battery...
master thesis 2024
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Castañeda, Theophil Spiegeler (author), Horstman, Bart (author), Capsi-Morales, Patricia (author), Della Santina, C. (author), Piazza, Cristina (author)
Adopting compliant structures holds the potential to enhance the robustness and interaction capabilities of the next generation of bionic limbs. Although researchers have proficiently explored this approach in the design of artificial hands, they devoted little attention to the development of more proximal joints. This work presents a...
conference paper 2024
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De Boeck, Jan (author)
In the context of prosthetic devices, the absence of natural sensory feedback poses a significant challenge, leading to limited proprioceptive sensation and reduced control over artificial limbs. This study explores the potential of establishing a magnetic connection between prosthetic devices and muscles to enhance proprioceptive feedback and...
master thesis 2023
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Sleijfer, Josh (author)
Humans are efficient at moving due to their exceptional mastery of bipedal locomotion. Several models have been made that attempt to model the motion of the centre of mass with a spring-mass system with various degree of success. For example, a two dimensional model tracks the height of the centre of mass well and a three dimensional model...
bachelor thesis 2023
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Ornaghi, Heitor Luiz (author), Monticeli, F.M. (author), Agnol, Lucas Dall (author)
n the past decades, there has been a significant increase in the use of polymers for biomedical applications. The global medical polymer market size was valued at USD 19.92 billion in 2022 and is expected to grow at a CAGR of 8.0% from 2023 to 2030 despite some limitations, such as cost (financial limitation), strength compared to metal plates...
journal article 2023
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Hall, Drew A. (author), Makinwa, K.A.A. (author), Jang, Taekwang (author)
There has been a long-standing interest in controlling and instrumenting the human body. Whether to restore lost function with neural prosthetics, monitor blood glucose levels, or augment human capabilities, there are countless opportunities for sensors inside ( e.g., ingestible, injectable, and implantable) and outside ( e.g., wearable) the...
journal article 2023
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Mulder, Jelmer (author)
In the Netherlands roughly 20.000 people wear an ocular prosthetic as a consequence of losing their eye due to an accident or disease. An ocular prosthetic is a type of facial prosthesis that replaces an absent natural eye. The main goal of an ocular prosthetic is to provide an aesthetic replacement of a real eye. It does not restore the ability...
master thesis 2022
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Calis, Ilse (author)
Fabricating custom-made ocular prostheses is currently a highly-skilled, labour-intense and non-reproducible process performed by an ocularist. Custom-fit prostheses are made from acrylic using a plaster mould, the iris is hand-painted, and veins are mimicked by adding red embroidery threads. Digital production techniques provide opportunities...
master thesis 2022
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Demir, Asli (author)
Children living with lower limb differences can utilize prostheses for mobility and conformity. However, children’s prostheses is a small market where development happens slowly, with a very small selection of products.<br/>Products in the children’s prosthetics market prioritize providing mobility and tackling mechanical challenges, but amputee...
master thesis 2022
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O’Brien, Lisa (author), Montesano, Elena (author), Chadwell, Alix (author), Kenney, Laurence (author), Smit, G. (author)
(1) Background: This study investigated the feasibility of conducting a two-week “real-world” trial of the Self Grasping Hand (SGH), a novel 3D printed passive adjustable prosthesis for hand absence; (2) Methods: Single-group pilot study of nine adults with trans-radial limb absence; five used body-powered split-hooks, and four had passive...
journal article 2022
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Burema, Arine (author)
Introduction: Amputees still experience problems with the use of their upper limb prostheses, mainly in the lack of comfort and functionality. This results in rejection of the prosthesis or overuse injuries due to compensatory movements. The comfort and functionality should be improved by reducing weight and increasing the degrees of freedom....
master thesis 2021
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Israa Mohamed Kamal Abdelaziz, Israa (author)
The conventional fabrication process of prosthetic sockets is known for being labor-intensive and time-consuming. It takes the user to wait 2-5 weeks to receive the prosthetic socket. In addition, most of the conventional sockets have fixed volumes that do not consider the volume fluctuations that the user experience daily because of muscle...
master thesis 2021
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Mastenbroek, Merel (author)
Background Upper limb prostheses help people with an upper limb deficiency in performing activities of daily living. They can be divided into two categories; body-powered and externally powered prostheses. The advantage of body-powered prostheses is that they provide feedback to the user. The advantage of externally powered prostheses is the low...
master thesis 2021
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Lommerse, Luuk (author)
Active hand prostheses aid people, who suffer from an upper limb deficiency, in performing activities of daily living. The two types of active hand prostheses available are the myo-electric prosthesis and body-powered prosthesis. Even though both allow a user to grasp objects, the downsides are major. The high actuation...
master thesis 2021
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de Jong, Randy (author)
Body-powered prosthetic hands used by below-elbow amputees function in two phases. There is the opening and closing motion of the hand (Motion Phase) and the phase when the hand is in contact with an object, and the fingers apply a pinching force (Pinching Phase). Each phase requires a different set of dynamics to properly function. In the...
master thesis 2020
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Mos, Daniek (author)
The WILMER appealing prehensor is a body-powered (BP) prosthesis for people with a trans-radial upper limb deficiency, which is highly appreciated because of its outward appearance and functionality. Currently, prehension of the WILMER appealing prehensor is voluntary opening (VO). Voluntary closing (VC) prehension could offer the prosthetic...
master thesis 2020
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Tromp, Sanne (author)
Background: The majority of the amputated population is living in low-resource countries, but only a small minority has access to rehabilitating services. The accessibility of upper limb prostheses in these countries is poor due to limited technical and medical resources. 3D printing is regarded as a promising manufacturing alternative in...
master thesis 2020
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Palm, Christine (author)
Misalignment in prosthetic legs can lead to bad posture, back pain and stump problems. A big influence therein is the alignment in the frontal and transverse plane of a prosthetic knee. This work aims to create an auxiliary tool for the prosthetist to align the prosthesis in an optimal way for the patient, with the use of inertial sensors. The...
master thesis 2020
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Vertongen, J. (author), Kamper, Derek G. (author), Smit, G. (author), Vallery, H. (author)
The large interest in robot hands and active hand prostheses has in recent years been joined by that in active hand orthoses. Despite the differences in intended uses, these three categories of artificial hand devices share key characteristics. Examination of the commonalities could stimulate future design. Thus, in this article, we undertook...
journal article 2020
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