Page 604 - IJB-10-3

International Journal of Bioprinting Five-axis printer for hybrid 3D scaffolds

Figure 5. Workflow and accuracy visualization for a scaffold on a single-curved surface. (a) Fabrication of a hybrid-printed osteochondral implant using
multi-material inkjet printing on a single-curved surface: (a, 1i) schematic representation of a knee joint (biorender.com) and scaffold to be fabricated
and a cylinder resembling the subchondral bone and articular cartilage (inset); (a, 2ii–iv) preparation of printing files; and (a, 3v–iv) printing strategy.
(b) Mounted cylinder on the printer with two Ricoh MH2820 printheads above. Scale bar: 20 mm. (c) Porous scaffold printed on a white polylactic acid
(PLA) single-curved surface resembling the hard phase using 3D inkjet printing: (c, i) before and (c, ii) after support material removal. Angular velocity
(ω) indicates rotation. Scale bar: 3 mm. (d) Measurement positions to determine printing accuracy. Scale bar: 1 mm. (e) Printing accuracy between struts
and pores in the circumferential and radial direction.

Volume 10 Issue 3 (2024) 596 doi: 10.36922/ijb.3189