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Stress and strain analysis of ulna bone with plate
Šafran, Jindřich ; Burša, Jiří (referee) ; Marcián, Petr (advisor)
A fracture of the elbow joint represents a serious pathological injury. In simple cases, if it is~possible the injury can be treated without invasive surgery. In the case of more complex fractures - comminuted fractures, it is necessary to have invasive surgery and the incriminated area must be reinforced with fixation splints. The present study focuses on~performing a~strain and stress analysis of the proximal ulna, which is fixed with~a~specialized titanium splint. To assess the mechanical interaction between the elements of the system computational modelling using the finite element method was used. In the first part of the study, the orthotic investigation is focused on types of ulna fracture, including its fixation, which is complemented by an anatomical search. In the second part of the thesis, the emphasis is placed on the creation of a geometry model from the received CT data, including its~modification for the creation of a computational model. Based on the available search material models were selected or calculated. In the third part of~the~thesis, the focus is on the complex development of the computational model, including constraints, placement of muscle tendons and it also focuses on the description and consideration of the choice of computational model options. In the results presentation the effects of the identified variants of the computational model were assessed as a function of load and the strain and stress characteristics were plotted. The assessment also emphasized on the mechanical interaction between the~mechanical elements of the fixation splint and screws with the bone tissue.
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Control of low-cost prosthetic limb using EMG sensors
Šafran, Jindřich ; Brablc, Martin (referee) ; Rajchl, Matej (advisor)
This Bachelor thesis is about the general design, construction and model assembling of the prosthetic arm. Its programming and controlling of the robotic part are also included. The thesis is divided into five chapters. In the first chapter, the anatomy of forearm is analysed and described. Its anatomical structure is the theoretical base on which the final model is designed and constructed. Following, second chapter, comprises the analysis of prosthetic mechanisms according to the historical development up until today. And this chapter also contains the production of the designed forearm-hand-model itself. The third chapter describes the EMG diagnostic method and the process of manufacturing of each compartment of controller device used for controlling the mechanism of the designed model. Next, chapter number four contains gaining and processing of the data from testing of the measuring device. In the last fifth chapter, the programming of the made forearm-hand-model in various development environments is described. All the results and gained knowledge, are evaluated and described in the conclusion of the Bachelor thesis.
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Control of low-cost prosthetic limb using EMG sensors
Šafran, Jindřich ; Brablc, Martin (referee) ; Rajchl, Matej (advisor)
This Bachelor thesis is about the general design, construction and model assembling of the prosthetic arm. Its programming and controlling of the robotic part are also included. The thesis is divided into five chapters. In the first chapter, the anatomy of forearm is analysed and described. Its anatomical structure is the theoretical base on which the final model is designed and constructed. Following, second chapter, comprises the analysis of prosthetic mechanisms according to the historical development up until today. And this chapter also contains the production of the designed forearm-hand-model itself. The third chapter describes the EMG diagnostic method and the process of manufacturing of each compartment of controller device used for controlling the mechanism of the designed model. Next, chapter number four contains gaining and processing of the data from testing of the measuring device. In the last fifth chapter, the programming of the made forearm-hand-model in various development environments is described. All the results and gained knowledge, are evaluated and described in the conclusion of the Bachelor thesis.
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