Abstract: Intraluminal anastomosis devices include complementary, ring-shaped clamping and pinning members for intraluminal end-to-end anastomosis of a tubular organ. The confronting faces of the devices have an annular, sharpened rim located at a radially innermost position. The confronting faces of the devices also include an annular groove located radially outwardly of the rim, the groove including a plurality of spaced, longitudinally extending openings having radially inwardly projecting serrations. Toothed pins are retained in the openings to securely clamp the devices and intervening tissue together.