A bioabsorbable device intended to be implanted in a peripheral (non-neurovascular) artery to temporarily obstruct blood flow typically for embolization of hypervascular tumours (e.g., nephroma, hepatoma, uterine fibroids). It is in the form of an injectable synthetic polymer hydrogel [e.g., made of polyethylene glycol (PEG)] that solidifies in situ to form a coherent embolus requiring no thrombosis to create blockage. It is typically supplied with instruments dedicated to implantation. This device is not intended to be used in intracranial arteries or for other neurovascular applications.