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Table 4 Applications and directions of bioprinting organs

From: Recent advances in bioprinting techniques: approaches, applications and future prospects

Bioprinted tissues and organs

3D printing technology

Applications

Future directions

References

Blood vessels

Inkjet bioprinting

Optimizing vascular geometry and cell viability and function

Predicting flow rates, oxygen tension, and the diffusion of molecules in the vascular environment

Improving resolution for printing small vessels

Increasing available bioink materials

Increasing bioprinting speed

[22, 111]

Extrusion bioprinting

Laser-assisted bioprinting

Heart

Extrusion-based bioprinting

Printing valvular interstitial cells into scaffolds with high speed and good viability (~100 %) over 21 days

Printing hydrogel-based valve-shaped structures

Developing types of materials with good flexibility and elasticity

[31, 77, 83]

FRESH

Bone

SLA

Printing scaffolds that provide a framework for cells to attach, proliferate and function and to be integrated with the surrounding tissue

Accurately controlling pore geometry, cell viability and mechanical properties

Investigating printed materials with osteoinductive or osteoconductive proteins

Triggering vascularization in the repaired region

[112, 113]

Laser-assisted bioprinting

Liver

Inkjet printing

Printing biological livers for liver transplantation in patients with liver resection

Constructing artificial liver tissue for the detection of drug toxicities and other medical and biological testing

Constructing 3D functional liver tissue with a substantial capillary-like network

[95, 99, 114]

Skin

Inkjet bioprinting

Fabricating skin substitutes to repair skin wounds

Studying the pathophysiology of skin diseases

Fabricating more complex human skin models with secondary and adnexal structures

Improving LAB technology to achieve automation for bioprinting skin

[42, 93]

Extrusion bioprinting

Laser-assisted bioprinting