Mimicking Alveolar Lung Structures with Lattice Designs

Area of Science:

• Biomedical Engineering
• Materials Science
• Mechanical Engineering

Background:

• Additive manufacturing (AM) has advanced aerospace engineering through lightweight lattice structures.
• Lattice structures offer optimized mechanical properties for high-performance components.

Purpose of the Study:

• To apply aerospace lattice design strategies to replicate human lung alveolar structures.
• To develop anatomically accurate 3D-printed lung models for surgical planning.
• To evaluate the mechanical properties of 3D-printed lung models for simulating lung mechanics.

Main Methods:

• Utilized nTopology software to generate lattice structures for a CAD model of adult lungs.
• Performed finite element analyses to assess elasticity and density.
• Produced a preliminary prototype using stereolithography with flexible resin.

Main Results:

• Demonstrated the feasibility of using aerospace-derived lattice designs in biomedical applications.
• Finite element analysis provided insights into lung model mechanics (elasticity, density).
• The prototype exhibited potential for realistic tactile feedback.

Conclusions:

• Aerospace lattice design principles can be successfully translated to create patient-specific 3D-printed lung models.
• These models hold promise for enhancing surgical planning through accurate anatomical replication and tactile feedback.
• Further development could lead to improved simulation of lung mechanics for medical training and research.