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Updated: Oct 12, 2025

Multimodal 3D Printing of Phantoms to Simulate Biological Tissue
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Development of a Multi-Material 3D Printer for Functional Anatomic Models.

Laszlo Jaksa1,2, Dieter Pahr2,3, Gernot Kronreif1

  • 1Austrian Center for Medical Innovation and Technology (ACMIT Gmbh), Viktor-Kaplan-Strasse 2/A, 2700 Wiener Neustadt, Austria.

International Journal of Bioprinting
|November 22, 2021
PubMed
Summary
This summary is machine-generated.

This study introduces a novel 3D printer capable of multi-material structuring for creating realistic anatomic models. This innovation addresses challenges in mimicking soft tissue mechanical properties for medical education and surgical planning.

Keywords:
Anatomic modelsMulti-material 3D printingSilicone 3D printingSoft tissues

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Area of Science:

  • Biomedical Engineering
  • Materials Science
  • Medical Imaging

Background:

  • Anatomic models are crucial for medical education and pre-operative planning, enhancing realism through additive manufacturing.
  • A significant challenge in creating advanced anatomic models is accurately reproducing the mechanical behavior of soft tissues.

Purpose of the Study:

  • To develop a multi-material 3D printing approach for creating anatomic models with improved mechanical realism.
  • To design and build a specialized 3D printer capable of extruding both soft and hard materials.

Main Methods:

  • Development of a custom 3D printer utilizing extrusion technology for depositing thermoplastic and silicone rubber materials.
  • Printing of various test objects to evaluate geometric features like thin walls, infill, overhangs, and multi-material interfaces.
  • Creation of a medical image-based ribcage model as a proof of concept for anatomical replication.

Main Results:

  • Successful printing of diverse geometric features, demonstrating the printer's capability for complex structures.
  • Validation of multi-material interface integrity and feasibility for soft tissue mimicry.
  • Demonstration of a proof-of-concept ribcage model, showcasing potential for patient-specific anatomical replication.

Conclusions:

  • The developed multi-material 3D printer offers a promising solution for overcoming limitations in soft tissue mechanical property replication.
  • This technology has significant potential for advancing the creation of highly realistic anatomic models for medical training and surgical planning.