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Primerjava različnih 3D natisnjenih umetnih srčnih zaklopk v zasnovani in razviti eksperimentalni pulzirajoči merilni postaji levega predela srca
ID Turk, Gregor (Author), ID Bizjan, Benjamin (Mentor) More about this mentor... This link opens in a new window, ID Hočevar, Marko (Comentor)

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Abstract
Srčne bolezni, zlasti okvare srčnih zaklopk, pogosto zahtevajo kirurško zdravljenje, saj farmakološki pristopi niso zadostni. V primeru nepopravljivih poškodb se izvajajo kirurški posegi, pri katerih se uporabljajo umetne srčne zaklopke, njihov razvoj pa sega v petdeseta leta prejšnjega stoletja. Sprva preproste zasnove s kroglico in kletko so se skozi desetletja razvile v kompleksne mehanske zaklopke z več lističi, ki vedno bolje posnemajo naravno tokovno dinamiko srca. Raziskave se danes vse bolj usmerjajo v razvoj 3D natisnjenih srčnih zaklopk, ki omogočajo večjo prilagodljivost posameznemu pacientu in natančnejše posnemanje anatomskih ter funkcionalnih značilnosti naravnih zaklopk. Umetne zaklopke sodijo med srčne vsadke in morajo izpolnjevati zahteve standarda ISO 5840, zato je pred njihovo klinično uporabo potrebno izvesti eksperimentalna testiranja, ki potrjujejo skladnost s standardom. V okviru magistrske naloge smo zasnovali in postavili eksperimentalno merilno postajo, ki omogoča testiranje 3D natisnjenih umetnih srčnih zaklopk v pogojih, ki posnemajo delovanje človeškega srca. V njej smo testirali šest različnih modelov srčnih zaklopk lastne izdelave, ki sicer ne izpolnjujejo pogojev za klinično uporabo, vendar služijo kot razvojni modeli za raziskave in nadaljnja testiranja na merilni postaji, namenjeni preučevanju delovanja LVAD črpalke ter tokovne dinamike v srcu.

Language:Slovenian
Keywords:srce, srčne zaklopke, bolezni srčnih zaklopk, merilna postaja, testiranje, tlačne razmere, LVAD črpalka
Work type:Master's thesis/paper
Typology:2.09 - Master's Thesis
Organization:FS - Faculty of Mechanical Engineering
Place of publishing:Ljubljana
Publisher:[G. Turk]
Year:2026
Number of pages:XXIV, 97 str.
PID:20.500.12556/RUL-180942 This link opens in a new window
UDC:591.412:616.12(043.2)
COBISS.SI-ID:272756739 This link opens in a new window
Publication date in RUL:20.03.2026
Views:419
Downloads:220
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Secondary language

Language:English
Title:Comparison of different 3D printed artificial heart valves in a designed and developed experimental left heart pulsatile testing station
Abstract:
Heart diseases, particularly heart valve disorders, often require surgical treatment, as pharmacological approaches are insufficient. In cases of irreversible damage, surgical procedures are performed using artificial heart valves, the development of which dates back to the 1950s. Initially simple ball and cage designs have, over the decades, evolved into complex multi leaflet mechanical valves that increasingly mimic the natural flow dynamics of the heart. Current research is increasingly focused on the development of 3D printed heart valves, which enable greater customization for individual patients and more accurate replication of the anatomical and functional characteristics of natural valves. Since artificial valves are classified as cardiac implants, they must comply with the requirements of the ISO 5840 standard; therefore, experimental testing is required prior to their clinical use to confirm compliance with the standard. Within the scope of this master’s thesis, we designed and constructed an experimental measurement setup that enables testing of 3D printed artificial heart valves under conditions that simulate the operation of the human heart. Using this setup, we tested six different self-fabricated heart valve models, which do not meet the requirements for clinical use but serve as developmental models for research and further testing on the measurement setup intended for studying the operation of an LVAD pump and flow dynamics within the heart.

Keywords:heart, heart valves, valvular diseases, test station, testing, pressure characteristics, LVAD pump

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