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Preclinical evaluation of implant design and manufacture
Hamáček, Petr ; Sedlák, Josef (referee) ; Píška, Miroslav (advisor)
This diploma thesis deals with the technological process of production of a short reconstruction nail, which is used in fractures of the femoral neck. It is located between the hip joint and the femur. The work deals with the analysis of the problems from the point of view of medicine, developmental stages of the implant, materials used for the production of reconstruction nails and a description of individual technologies of nail production.
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ICT Selection
Kreisler, Jan ; Hostinský, Michal (referee) ; Koch, Miloš (advisor)
Bachelor thesis deals with the selection and implementation of information systems for the company MedConcept Ltd., which sells medical technology and production, development and sale of dental implants.
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Stress-strain Analysis of Chosen Spinal Fixation Device
Prášilová, Eva ; Valášek, Jiří (referee) ; Marcián, Petr (advisor)
The degenerative and traumatic injuries of a spine are very frequent. In those cases it is necessary to stabilize the corresponding spine segment using a spine implant. The spinal implants are rigid or flexible, the latter known as dynamic ones in medical practice. In this thesis, the problems of the physiological spinal segment and the segment with implant were solved using the computational modelling (finite element method). Computational model consists of 4 lumbar vertebrae L2 – L5, intervertebral discs, joints and spinal implants. The spinal segment was loaded by the force 400N and 200N, than by force 200N together with bending moments 2,5Nm and 5Nm depending of the motion. The displacement of the whole system, contact pressure of cartilages, equivalent strain in cancellous bone and equivalent stress in the implant were analyzed. The deformation of the physiological model and the model with the implant are comparable, but the bone tissue of the model with the implant is dramatically more loaded in vicinity of the screws.
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Bones implants based on Fe and Mg
Košíček, Adam ; Zatloukal, Miroslav (referee) ; Sedlaříková, Marie (advisor)
This paper work deals with properties of metallic biomaterials in terms of their suitability for use as a temporary metal implants. The work focuses on biodegradable materials based on iron and suitable alloying elements, which would create a perfect implant. A part of this work describes procedure of creating biodegradable metallic samples with alloying element Magnesium and measuring the corrosion rates. There are a few theoretical chapters concerning permanent implants, function and composition of human bones, iron and magnesium in human body and biodegradable materials.
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Materials in medicine practice
Dvořáková, Tereza ; Čikl, Josef (referee) ; Molliková, Eva (advisor)
This bachelor's thesis deals with literary research on metal, ceramic and polymer materials for medical applications. The history of these materials, their properties and material requirements are described in the first part. Further, the most often application areas of fixators and soft or hard tissue replacements are introduced. This thesis is ended by introducing a perspective science filed, which is a tissue engineering.
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On the advanced production technology of UHMWPE joint implant part
Urbancová, Kateřina ; Sliwková, Petra (referee) ; Píška, Miroslav (advisor)
This bachelor’s thesis is dealing with the problematics of individual joint replacements. The thesis summarizes the modern materials used for making artificial joint replacements, but it concentrates mainly on the plastic femoro-tibial part of the implant, usually manufactured from ultra-high molecular weight polyethylene. This material is the best choice when manufacturing the articulating surface of the joint replacement at the moment. The thesis pays attention to the polyethylene surface treatment, as the quality of the surface affects the wear of the plastic, which is critical for the implant lifespan. The thesis also focuses on analysis of the coefficient of friction of UHMWPE in contact with the titanium femoral component. Another part of this thesis is also a wear analysis of used tibial inserts made of UHMWPE and the mechanisms of wear.
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