Disclosed herein is a bi-directional perfusion cannula (10) comprising an elongate tube (12) for insertion into an artery, the elongate tube (12) comprising a first aperture (14) at a distal end of the elongate tube which is forward during insertion, the first aperture being configured so that blood can flow into the artery (21) in the direction of insertion；an elbow (16) preformed in the elongate tube； and a second aperture (18), the second aperture being formed in or slightly rearward of the elbow and configured for supplying blood into the artery in a second direction which is generally opposite to the insertion direction, wherein the elbow is preformed in the elongate tube such that in a relaxed state prior to insertion the cannula has an elbow bend formed in it.
