A hose connection for an arrangement for collection of liquid from a patient is disclosed which connection comprises a first tubular member (1) to be in fluid connection with the patient and having one or more protrusions (3) arranged on an outer surface, and an outlet (2), and further comprises a collection bag (24) having an inlet to be connected to the outlet for collection of liquid coming through the first tubular member. The inlet comprises a second tubular member (5) being connected to the bag and adapted to receive and surround at least a part of said first tubular member. The second tubular member has one or more receiving means (6,11) being engageable with the protrusions for providing a locked, but separable connection between the first and second tubular member.
