A tunnelling device for use in the placement of a peripheral cardiovascular graft in a living body comprising three portions. The first portion is a hollow curved conduit forming portion having a distal end, a proximal end and an interior lumen. The second portion is a hollow bullet shaped nose section releasably engageable with the distal end of the conduit forming portion. The third portion is a handle which is releasably locked to the proximal end of the conduit forming portion and has a stylet which is fixed to and extends distally from the handle, the stylet being received within and through the lumen of the conduit forming portion and terminating at a position within the nose section.