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Researchers developed realistic 3D elastic surgical models for facial reconstruction and cleft lip repair. These models mimic skin properties, allowing for incision marking, cutting, and suturing during simulated surgeries.

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Area of Science:

  • Biomedical Engineering
  • Medical Simulation
  • Plastic Surgery

Background:

  • Traditional surgical training lacks realistic tactile feedback for complex procedures.
  • Existing 3D models often do not accurately replicate tissue elasticity and handling properties.
  • Need for advanced simulation tools for facial reconstruction and cleft lip surgery training.

Purpose of the Study:

  • To create realistic, computer-assisted, three-dimensional (3D) elastic surgical models.
  • To meet specific requirements including elastic texture, pen marking, cuttability, stitch retention, and layered structure.
  • To evaluate the model's efficacy in training surgical residents and young doctors.

Main Methods:

  • Developed a two-layer elastic model using computed tomographic (CT) and magnetic resonance imaging (MRI) stereolithographic data.
  • Surface layer composed of polyurethane; inner layer composed of silicone to mimic skin and subcutaneous tissue.
  • Tested various elastic solvents to achieve desired material properties.

Main Results:

  • Successfully created realistic 3D elastic models of the face and cleft lip.
  • Models demonstrated properties suitable for incision marking, surgical cutting, and long-term stitch retention.
  • Trainees experienced realistic simulated surgeries, including local flap creation and cheiloplasty.

Conclusions:

  • The developed 3D elastic models provide a realistic platform for surgical simulation.
  • These models enhance surgical training by allowing hands-on practice of complex procedures like cheiloplasty.
  • The models facilitate understanding of three-dimensional flap movements and surgical techniques.