and PBS-DLS-PEG 70-25-05 with and without gelatin coating. Notably, we observed a significant enhancement in burst pressure and liquid leakage in the scaffolds following gelatin coating. This enhancement suggests that gelatin can not only improve the endothelialization , but it has also a unique capacity to seal the scaffold's pores, notably the tunica externalike (electrospun fibers) as it is presented in Figure . As the 3D printed layer (tunica media) featured hexagonal micropores, the gelatin solution was able to permeate these pores and adhere to the electrospun layer (tunica externa), effectively interacting with the fibers and forming a thin sealing layer. Therefore, this process effectively prevented any liquid from escaping and reduced the scaffold's liquid leakage to zero. For the PBS-DLS 70-30 copolymers, the burst pressure increased from 170 to 230 kPa with gelatin coating. In the case of the PBS-DLS-PEG 70-25-05 copolymers, this improvement was even more pronounced after gelatin coating, with burst pressure increasing from 140 to 240 kPa.