|
|
Stress-strain analysis of lower limb prosthetic
Musilová, Kateřina ; Fuis, Vladimír (referee) ; Návrat, Tomáš (advisor)
This master thesis deals with lower-limb prosthesis. The aim of the first part of this work is stress-strain analysis of trans-tibial prosthesis, which is understand without prosthetic socket and the foam prosthetic feet. Analysis is made using finite element method in ANSYS Workbench 12.0 software. For the purpose of setting up the computational model it is necessary to make few partial models. Model of geometry of the prosthesis is made in SolidWorks 2009. Based on the outputs of stress-strain analysis and the results evaluation, the critical component is chosen and this one is evaluated according to limite state for fatigue. The algorithm of evaluation of named component in the state of high cycle fatigue is discussed in the second part of this thesis.
|
|
| |
|
|
Design of Transtibial Posthesis With Use of Additive Manufacturing Technology.
Kopecký, Martin ; Náhlík, Luboš (referee) ; Koutný, Daniel (advisor)
The thesis deals with the design of a transtibial prosthesis by additive manufacturing technology. Based on walking biomechanics and the current situation of knowledge a prosthetic foot has been designed for a patient with low level of physical activity. Furthermore, the thesis describes the design of an individual socket for the patient. The socket has been designed by reverse engineer procedure based on the three-dimensional geometry of patient´s stump obtained by 3D scanning. Testing samples of the foot and the socket have been made for the check of functionality of both the devices and then subjected to mechanical tests in accordance to the methodology regulation ISO 10328. Finally, the thesis depicts the FDM technology used for the production of functional samples of the designed devices; assembly of modular transtibial prosthesis and its testing by the patient.
|
|
|
Kinematic analysis of movement of cyclist with transtibial prosthesis.
Stoklásek, Pavel ; Mazůrek, Ivan (referee) ; Paloušek, David (advisor)
This work is aiming to the area of biomechanics and deals with the experimental finding of appropriate kinematic ratios of crank mechanism on racing bicycle and transtibial prosthesis of racing cyclists with an assessment of kinematic ratios depending on the overall athletic performance. The primary aim of the work is investigation of the impact of inappropriate existing kinematic ratios of leg prosthesis and crank mechanism on the kinematics and dynamics of top athlete. The work presents experiments that proposes find out appropriate kinematic ratio of the length of kinematic members and possibility to improve overall athletic performance. The measurement is supplemented about cycling analysis of racer realized via cameras tracking system and measuring muscle activity by EMG. The work also includes a description of impact of various factors on cycling.
|
|
| |
|
|
Productiont transtibial prothesis TSB using vacuum system in patients with diabetes
Debs, Maher ; Pavlů, Dagmar (advisor) ; Půlpán, Rudolf (referee)
Title: Production transtibial prosthesis TSB using a liner and vacuum system in patients with diabetes. Target work: My work consists of a general part which provides a brief overview of each step of treatment after the surgery, rehabilitation and prosthetic diabetic patient with transtibial amputation. In a special section describes the different types of stubs sockets, and their diference the attachment to stump for determining the type of administrative stub beds for diabetic patients with transtibial amputation. I describe the various types of liners and vacuum system. Finally, I describe the production of the TSB prosthesis. Methods: My work is theoretical studies to analysis and subsequent synthesis of current knowledge to solving issues. In my work, I relied on the findings of expert seminars, as well as the method I use an informal chat with an expert prosthetic individual companies and the available literature. Result: Stub socket with a one-way valve is a suitable alternative for amputees with diabetes and provides perfect comfort. Prevents the formation of calluses Keywords: transtibial prosthesis stubs sockets, Lower thigh prosthesis, vacuum systém, TSB, production transtibial protesis, liner.
|
|
|
Analysis of the functionality of the current transtibial prostheses
Nagy, Ondřej ; Šolc, Zdeněk (advisor) ; Černý, Pavel (referee)
1 ABSTRACT Title: Analysis of the functionality of the current transtibial prostheses Objectives: The aim of the thesis is to describe a history of the development of prosthetics from its inception to the present and describe the basic structure and distribution of lower limb prostheses. The thesis will also include analysis of functionality existing transtibial prostheses. To determine the required documents and clarify key issues: " whether transtibial prostheses are now able to fully replace the patient lost limbs" will be used poll/questionnaire . Methods: In the theoretical part, I used the literature search. I have analyzed the accumulated data from professional publications and books. In the empirical section, I did a quantitative research to determine whether transtibial prosthesis fully replace missing to the handicapped persons. Results: I think that the current prosthetics will replace to patients the functionality of the real limbs. Keywords: prostheses , leg prosthesis, femoral prosthesis , exartikulation in the knee, the development of prosthetic devices, amputation , foot, stump, construction , transtibial prosthesis
|
|
|
Design of Transtibial Posthesis With Use of Additive Manufacturing Technology.
Kopecký, Martin ; Náhlík, Luboš (referee) ; Koutný, Daniel (advisor)
The thesis deals with the design of a transtibial prosthesis by additive manufacturing technology. Based on walking biomechanics and the current situation of knowledge a prosthetic foot has been designed for a patient with low level of physical activity. Furthermore, the thesis describes the design of an individual socket for the patient. The socket has been designed by reverse engineer procedure based on the three-dimensional geometry of patient´s stump obtained by 3D scanning. Testing samples of the foot and the socket have been made for the check of functionality of both the devices and then subjected to mechanical tests in accordance to the methodology regulation ISO 10328. Finally, the thesis depicts the FDM technology used for the production of functional samples of the designed devices; assembly of modular transtibial prosthesis and its testing by the patient.
|
|
|
Kinematic analysis of movement of cyclist with transtibial prosthesis.
Stoklásek, Pavel ; Mazůrek, Ivan (referee) ; Paloušek, David (advisor)
This work is aiming to the area of biomechanics and deals with the experimental finding of appropriate kinematic ratios of crank mechanism on racing bicycle and transtibial prosthesis of racing cyclists with an assessment of kinematic ratios depending on the overall athletic performance. The primary aim of the work is investigation of the impact of inappropriate existing kinematic ratios of leg prosthesis and crank mechanism on the kinematics and dynamics of top athlete. The work presents experiments that proposes find out appropriate kinematic ratio of the length of kinematic members and possibility to improve overall athletic performance. The measurement is supplemented about cycling analysis of racer realized via cameras tracking system and measuring muscle activity by EMG. The work also includes a description of impact of various factors on cycling.
|
|
|
Stress-strain analysis of lower limb prosthetic
Musilová, Kateřina ; Fuis, Vladimír (referee) ; Návrat, Tomáš (advisor)
This master thesis deals with lower-limb prosthesis. The aim of the first part of this work is stress-strain analysis of trans-tibial prosthesis, which is understand without prosthetic socket and the foam prosthetic feet. Analysis is made using finite element method in ANSYS Workbench 12.0 software. For the purpose of setting up the computational model it is necessary to make few partial models. Model of geometry of the prosthesis is made in SolidWorks 2009. Based on the outputs of stress-strain analysis and the results evaluation, the critical component is chosen and this one is evaluated according to limite state for fatigue. The algorithm of evaluation of named component in the state of high cycle fatigue is discussed in the second part of this thesis.
|
guest ::
