A vascular attachment device (800) seals an opening between two blood conduit tips, where the device comprises a ring element (752); a plurality of fingers (754) mounted on the ring element (752) and adapted to seal at least a portion of an opening between the two blood conduit lips by compressing at least two lips between at least one finger (754) and the ring element (752); and at least one puller spike (812) adapted for pulling, inside the body, at least one of the lips to a space defined between the finger (754) and the ring element(752).
