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Computer modelling of the residual limb for the development of prosthetic sockets and liners with the cellular structure = Računalniško modeliranje krna za razvoj ležišč in vložkov protez iz celičnih struktur : doctoral disertation = doktorska disertacijaPlesec, VasjaThe production of lower limb prostheses continues to rely primarily on manual methods, which are outdated and characterized by labour-intensive processes, lengthy time requirements, high costs, and a ... heavy reliance on the expertise of prosthetists. Achieving a satisfactory fit between the residual limb and socket remains a challenge, often leading to discomfort, pain, and potential wearer tissue damage. However, advancements in computer technology and numerical simulation offer an opportunity to predict stresses and strains experienced by the residual limb during prosthesis usage. This, in turn, aids in the development process by enhancing the design of the prosthetic socket and liner through virtual environments. In this dissertation we developed a generic numerical transtibial model to bridge the gap between clinical practice and numerical simulations. Biomechanically validated, this model generates outcomes applicable to a broader amputee population, facilitating comparative analysis of socket and liner designs and materials under different loading conditions. Furthermore, the dissertation explores the utilization of a 3D-printed socket manufactured through the cost-effective fused filament fabrication process, using polylactic acid filament, aiming to reduce the costs and establish a streamlined production process. The 3D-printed socket was evaluated within the virtual environment using the developed transtibial model. The numerical findings indicate that the 3D-printed socket can effectively withstand the loads encountered during the stages of prosthesis donning, single-leg stance, heel strike, and push-off, thereby presenting a viable alternative to the prevalent composite socket. Additionally, a cellular structure composed of a flexible thermoplastic elastomeric material is proposed as a prosthetic liner to enhance comfort by reducing contact pressure while maintaining the required stability. Numerical results indicate that by manipulating cellular parameters such as unit cell type and relative density of the structure, a customized response can be achieved. This customized response effectively reduces contact pressure for a given scenario without increasing displacement, thereby improving comfort while maintaining stability.Vrsta gradiva - disertacija ; neleposlovje za odrasleZaložništvo in izdelava - Maribor : [V. Plesec], 2023Jezik - angleški, slovenskiCOBISS.SI-ID - 172145667
Avtor
Plesec, Vasja
Drugi avtorji
Harih, Gregor |
Burger, Helena
Teme
Protetika |
Disertacije |
Univerzitetna in visokošolska dela |
lower-limb prosthesis |
generic numerical transtibial model |
3D-printed socket |
cellular structure liner |
finite element method |
proteza spodnjih okončin |
generični numerični transtibialni model |
3D-tiskano ležišče |
vložek iz celične strukture |
metoda končnih elementov |
doktorske disertacije
Rezervirajte gradivo na želenem mestu prevzema.
Mesto prevzema |
Status gradiva | Rezervacija |
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Časopisna čitalnica |
prosto - za čitalnico
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Velika čitalnica |
prosto - za čitalnico
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Signatura – lokacija, inventarna št. ... |
Status izvoda |
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GS II 0000750588 glavno skladišče GS II 750588 glavno skladišče |
prosto - za čitalnico
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Vnos na polico
Trajna povezava
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Faktor vpliva
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Leto | Faktor vpliva | Izdaja | Kategorija | Razvrstitev | ||||
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
Baze podatkov, v katerih je revija indeksirana
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Povezave do osebnih bibliografij avtorjev | Povezave do podatkov o raziskovalcih v sistemu SICRIS |
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Plesec, Vasja | 53576 |
Harih, Gregor | 33256 |
Burger, Helena | 14962 |
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Prosimo, počakajte trenutek.
Naročanje gradiva za izposojo v čitalnice
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Urnik dostave gradiva z oznako DS v signaturi