An infusion device incl. a preferably soft cannula (1) configured to be inserted by means of an insertion needle. The cannula has a tubular body member (3) having a proximal end (10) and a subcutaneously placed distal portion (20) having a distal end where the distal portion is provided with an opening (5) allowing a portion of a drug (4) conveyed through the tubular body member to discharge. The cannula further comprise, in the distal portion, a radial opening (2) allowing a portion of a drug (4) conveyed through the tubular body member to discharge.
