Biaxial extensometer for measuring of the human skin anisotropy in vivo

Čapek, Lukáš; Lochman, Z.; Dzan, L.; Jacquet, Emmanuelle

doi:10.1109/cibec.2010.5716059

Cited by 3 publications

(3 citation statements)

References 8 publications

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“…The material data were gained from in vivo uniaxial experiments [7]. The material constants for the constitutive law were estimated directly from the FEM software.…”

Section: Planar Numerical Modelmentioning

confidence: 99%

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The analysis of forces needed for the suturing of elliptical skin wounds

Čapek

Jacquet

Dzan

et al. 2011

Med Biol Eng Comput

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There is a lack of information regarding the forces required for suturing human wounds. The knowledge of suturing forces serves as complementary information for setting up the limiting geometry when using tissue adhesives and it might also be used in robot-assisted surgery. The main purpose of this paper was to evaluate the forces required for suturing selected skin wounds. An elliptical wound was chosen for our study. In this study a numerical analysis and in vivo experiments were performed. Regarding the numerical models, the maximum forces occurred in the middle of the elliptical wound in all cases. In the case of highest pre-stress used in these analyses the maximal force varied from 0.5 N for the smallest wound (30 × 5 mm) to 1.5 N for the largest wound (30 × 15 mm). The maximum peak force for the wound with a size of 46 × 13 mm was 3.2 N. The minimum peak force for the wound with a size of 36 × 5 mm was 1.1 N.

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“…The material data were gained from in vivo uniaxial experiments [7]. The material constants for the constitutive law were estimated directly from the FEM software.…”

Section: Planar Numerical Modelmentioning

confidence: 99%

“…Specifically, the force was measured after 30 s again. The relaxation interval was determined according to in vivo test and time limits during surgery [7]. It should be noted that the skin is not fully relaxed, but the main relaxation decrease and the next curve slope was archived after this interval.…”

Section: In Vivo Experimentsmentioning

confidence: 99%

The analysis of forces needed for the suturing of elliptical skin wounds

Čapek

Jacquet

Dzan

et al. 2011

Med Biol Eng Comput

View full text Add to dashboard Cite

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“…It is referenced as Skin (2) and two materials are tested ( Table 1). The Ogden parameters of the second material are identified from ex vivo test performed on abdominoplasty human skin with a specific device [13], for which both forces and displacements of the tissue are registered at the same time. In this paper, the anisotropy has not been taken into account within the behaviour law.…”

Section: Variation Of the Materials Behaviourmentioning

confidence: 99%

Numerical analysis of the V-Y shaped advancement flap

Remache

Chambert

Pauchot

et al. 2015

Medical Engineering & Physics

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The V-Y advancement flap is a usual technique for the closure of skin defects. A triangular flap is incised adjacent to a skin defect of rectangular shape. As the flap is advanced to close the initial defect, two smaller defects in the shape of a parallelogram are formed with respect to a reflection symmetry. The height of the defects depends on the apex angle of the flap and the closure efforts are related to the defects height. Andrades et al. 2005 have performed a geometrical analysis of the V-Y flap technique in order to reach a compromise between the flap size and the defects width. However, the geometrical approach does not consider the mechanical properties of the skin. The present analysis based on the finite element method is proposed as a complement to the geometrical one. This analysis aims to highlight the major role of the skin elasticity for a full analysis of the V-Y advancement flap. Furthermore, the study of this technique shows that closing at the flap apex seems mechanically the most interesting step. Thus different strategies of defect closure at the flap apex stemming from surgeon's know-how have been tested by numerical simulations.

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