A magnet delivery system for forming an anastomosis. The system-comprises a wire guide (333), a catheter (335) having a delivery portion for advancement into a intracorporeal space and a magnet (330). The delivery portion has a lumen extending at least partially therethrough. The system further comprises a strand (337) connected to the catheter. The magnet is disposed over the wire guide and distal to the catheter, and retained by the strand being releasably connected (338) to the wire guide.
