Dokument-ID Dokumenttyp Verfasser/Autoren Herausgeber Haupttitel Abstract Auflage Verlagsort Verlag Erscheinungsjahr Seitenzahl Schriftenreihe Titel Schriftenreihe Bandzahl ISBN Quelle der Hochschulschrift Konferenzname Bemerkung Quelle:Titel Quelle:Jahrgang Quelle:Heftnummer Quelle:Erste Seite Quelle:Letzte Seite URN DOI Zugriffsart Link Abteilungen OPUS4-300 Konferenzveröffentlichung Tran, Thanh Ngoc, tran@fh-aachen.de; Novacek, V., ; Tolba, R., ; Klinge, U., ; Turquier, F., ; Staat, Manfred, m.staat@fh-aachen.de Experimental and Computational approach to study colorectal anastomosis. ISB2011, Proceedings of the XXIII Congress of the International Society of Biomechanics, Brussels, Belgium, July 3-7, 2011 Summary: This paper presents a methodology to study and understand the mechanics of stapled anastomotic behaviors by combining empirical experimentation and finite element analysis. Performance of stapled anastomosis is studied in terms of leakage and numerical results which are compared to in vitro experiments performed on fresh porcine tissue. Results suggest that leaks occur between the tissue and staple legs penetrating through the tissue. 2011 Fachbereich Medizintechnik und Technomathematik OPUS4-4811 Wissenschaftlicher Artikel Novacek, V., ; Tran, Thanh Ngoc, tran@fh-aachen.de; Klinge, U., ; Tolba, R. H., ; Staat, Manfred, m.staat@fh-aachen.de; Bronson, D. G., ; Miesse, A. M., ; Whiffen, J., ; Turquier, F., Finite element modelling of stapled colorectal end-to-end anastomosis : Advantages of variable height stapler design The impact of surgical staplers on tissues has been studied mostly in an empirical manner. In this paper, finite element method was used to clarify the mechanics of tissue stapling and associated phenomena. Various stapling modalities and several designs of circular staplers were investigated to evaluate the impact of the device on tissues and mechanical performance of the end-to-end colorectal anastomosis. Numerical simulations demonstrated that a single row of staples is not adequate to resist leakage due to non-linear buckling and opening of the tissue layers between two adjacent staples. Compared to the single staple row configuration, significant increase in stress experienced by the tissue at the inner staple rows was observed in two and three rows designs. On the other hand, adding second and/or third staple row had no effect on strain in the tissue inside the staples. Variable height design with higher staples in outer rows significantly reduced the stresses and strains in outer rows when compared to the same configuration with flat cartridge. Amsterdam Elsevier 2012 4 Journal of Biomechanics 45 115 2693 2697 10.1016/j.jbiomech.2012.07.021 campus https://doi.org/10.1016/j.jbiomech.2012.07.021 Fachbereich Medizintechnik und Technomathematik