A plaster device serves for fixating a length of a medical tube in relation to a skin surface of an individual having the tube inserted into a body part via an access opening. The plaster device includes an adhesive part having an upper side an adherent lower side for attaching the device to the skin, and a through-opening for receiving the tube. A support part is provided on the upper side of the adhesive part and arranged for supporting an inserted tube at a bent section. The support part is partly joined to the adhesive part and includes first and second oppositely facing jaws for taking hold of at least a section of the bent tube. The jaws are interconnected at oppositely facing first ends by a support section arranged adjacent to the through-opening in the adhesive part.