Fig. 2.

Fabrication method of small diameter vascular graft (SDVG) through the deposition of methacryloyl gelatin-alginate (GEAL) and poly(ε-caprolactone) (PCL) fibres sublayers. a Fabrication of PCL fibre sublayer by deposition of PCL fibres into a spinning rod via angled solution blow spinning. During this process the rod moves vertically via the dip-spinning system. b Fabrication of GEAL sublayers by vertical dipping of an orientated fibre-coated rod into GEAL solution followed by rotational retraction and exposure to ultraviolet (UV) light. c Solution blow-spinning (SBS) apparatus showing a central-inner nozzle for the extrusion of PCL solution, and a concentric-outer nozzle for delivery of compressed air (right, end view). The central-inner nozzle protrudes 1 mm from the air nozzle