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The future of prosthetics and assistive technologies, particularly exoprostheses and exoskeletons, lies in the seamless integration of these devices into the human nervous system. Through this integration, patients should be able to directly and intuitively control these "foreign" objects, allowing for a degree of independence and function similar to that of normal limb movement. Our consortium is currently focusing on the creation of neural exoprostheses, which enable amputees to control and command prosthetic limbs via neural signals produced in the stump's residual nerves. This method offers users the chance to regain both functionality and a sensation of embodied control over their prosthetic devices by simulating the limb's natural, pre-amputation control.
The primary objective of our project is to develop neuroprosthetics by using neural signal collection to allow direct communication between the human nervous system and external devices, like exoprostheses and exoskeletons. The motion of the devices is then controlled by these signals, which are obtained from the nerves in the residual limb or, in the case of exoskeletons, from the neurological systems of patients who have partial or total paralysis. Furthermore, the bidirectional communication is investigated, in which the prosthetic limb or exoskeleton not only receives data from the nervous system but also gives the user feedback, thereby boosting motor control and proprioception.
This bidirectional interaction has the potential to revolutionize rehabilitation, mobility, and therapy for individuals with amputations or neurological disorders such as spinal cord injuries. Through this interdisciplinary approach, the aim is to develop advanced neural interfaces that facilitate these interactions, ultimately improving both the functional outcomes and quality of life for patients. The proposed technology provides the opportunity not only to restore mobility and independence but also to open new ways for therapy and neural regeneration of the afflicted patients.
Based on the above-mentioned considerations the current paper presents a comprehensive study of the design, mechanical analysis and manufacturing process of a hand exoprosthesis designed to enhance the functionality and comfort for individuals with upper-limb amputations. The analysis is primarily focused on the simulation of the kinematic behaviour and the stress strain state of the structural elements of the hand when you pick up an object equipped with a handle is picked-up by the individual. The use of Finite Elements method is used for the
The analysis focuses on the design and development of a custom-built prosthetic hand, evaluating key mechanical aspects such as joint mobility, force distribution, and material selection to ensure optimal performance and durability. Finite Element Analysis (FEA) simulations were employed to assess stress, strain, and deformation patterns under various loading conditions, allowing for iterative refinement of the design. Additionally, the manufacturing process, utilizing advanced techniques such as 3D printing and additive manufacturing, is discussed in detail to highlight its potential for cost-effective, customized prosthetic solutions. The study concludes by emphasizing the importance of interdisciplinary collaboration between engineering, materials science, and clinical expertise to create more effective, user-centered prosthetic devices. The results demonstrate a promising approach to improving the functionality, affordability, and accessibility of hand exoprosthesis.
