Yes, Exudrain Mini is certainly bigger than most minidrains. The reason for this is that it is the only miniature drain that has a one-way valve to protect he patient´s wound site from retrograde contamination. To compensate for the larger collection chamber of Exudrain Mini, the catheter has been manufactured much longer than that supplied with other miniature drains, to enable the drain to be moved away from the wound site, and conveniently placed inside a pocket or dressing gown.