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International Journal of Bioprinting Extrusion-based biomaterial inks

Figure 7. Selection of biomaterial inks for specific bioprinting strategy. (a) Single-nozzle extrusion-based bioprinting. (b) Coaxial-nozzle extrusion-based
bioprinting. (c) Multi-nozzle extrusion-based bioprinting.

5. Selection of biomaterial ink be constructed, the applicable printing method and the
requirements of tissue function.
Many kinds of hydrogel polymers can be used in
extrusion-based bioprinting for applying in the field of In addition to conventional single-nozzle/single-
tissue engineering, and their properties and functions material bioprinting, the extrusion-based 3D bioprinting
varies for ideal construct design and applied. However, a strategies also have some variations, such as embedding
single type of hydrogel polymer can hardly fulfill all the bioprinting, co-axial bioprinting, multi-nozzle/multi-
performance requirements of extrusion-based bioprinting. material bioprinting, single-nozzle/multi-material
Therefore, two or more biomaterial inks should be bioprinting with the microfluidic nozzle [181] , additional
selected for blending to obtain the ideal extrusion-based configurations of multi-material bioprinting and
bioink (Figure 7), according to the geometric shape to continuous chaotic bioprinting . The basic molding unit
[15]

Volume 9 Issue 2 (2023) 15 https://doi.org/10.18063/ijb.v9i2.649