A mounting tool (20) and method for mounting an anastomotic device (10, 200) to an end (220, 221) of a tubular structure (90) comprises a receiving portion for receiving a rigid part (11, 13) of said device (10, 200) and a conical portion with a large end facing said rigid part (11, 13) having a diameter larger than or equal to the rigid part (11, 13) and a small end. The conical portion comprises a releasable portion and is insertable into the elastic part (12) arranged inside the tubular structure (90) for expanding the diameter thereof and for passing the elastic part (12) beyond the large end and onto a rigid part (11, 13) arrangeable at the receiving portion.
