|
Plastic Surgery flap surgery has been widely used in the the skin defects prosthetics, based the flap surgery personalized and diversified development trend, based on the existing experience of clinical surgery of the lack of precision and rigor, it is difficult to reach the patient requests, plastic surgery The doctors have been expected to have a real simulation of computer simulation technology for clinical flap surgery. Engineering finite element software and clinical flap surgery, soft tissue biomechanical properties, explore the establishment of a three-dimensional finite element model of the human body flap by the deformation of the flap, postoperative skin mechanical characteristics quantitative analysis, which provide theoretical guidance for clinical flap surgery, the technical basis for reducing patient disputes, create a flap three-dimensional digitized analog system. Main biomechanical parameters such as clinical flap surgery: the large deformation of the stress-strain behavior, creep, relaxation, and for the lack of previous studies consider the bottleneck of the material properties of the skin, select a reasonable pull away from the body skin uniaxial stretch test, the stress-strain curve of the deformation of the skin flap simulation modeling provides a reliable material parameters. Z-shaped flap rotation flap, rhomboid flap advancement flap four typical flap simplifies modeling and simulation, simulation flap flap modeling stretch rotation deformation, flap and skin side of the suture and postoperative constraint release key methods that are reflected in the body geometry modeling, the definition of the geometry and material properties, contact set, the process of load conditions. After the four flaps simulation results of analysis obtained the stress of the body tissue incision contours tension and variation. Modeling and simulation of real human rhomboid flap, a real human arm geometry image obtained by CCD, three-dimensional scanner, using Geomagic software for image processing, to establish a support base for the simulation of human subcutaneous tissue and conversion of CAD models, import finite element software, its re-meshing of the simulation results of the preliminary analysis, control and clinical postoperative images obtained prone to the danger zone in the the rhombus clinical surgery, finite element numerical simulation to verify the feasibility of clinical application of flap surgery, to provide theoretical guidance for doctors. Established finite element model of the clinical flap surgery, to establish the methods and ideas of any flap model, to verify the feasibility of the use of finite element software for modeling and simulation of clinical flap surgery for future research to provide a reliable based on practical clinical flap surgery 3D digital simulation system, and the development of the technical basis.
|