An anastomosis device that includes a catheter body is provided. A distal end portion of the catheter can include a spring device to prevent the formation of blood clots and to improve the flow of urine out of the catheter. The device may be used, for example, in performing procedures such as a vesico-urethral anastomosis in association with a radical prostatectomy, or with an end-to-end urethral anastomosis.