Delivery device

A conveying device at least for conveying a fluid, with at least one conveying space, with at least one conveying space element, which at least partly delimits the conveying space and is embodied in a rigid fashion, and with at least one elastically deformable conveying element, which forms the conveying space together with the conveying space element, wherein at least the conveying space element and the conveying element together form an exchangeable unit, wherein the conveying element is arranged on the conveying space element in an at least partly convexly curved fashion, wherein the conveying element is embodied in a spring-elastic fashion, wherein, following a deformation, the conveying element automatically seeks to re-assume a basic shape, wherein the conveying element is connected to the conveying space element in a non-releasable manner, wherein the conveying space element comprises at least one concave recess for at least partly forming the conveying space, wherein an inner surface of the conveying space element, which delimits the concave recess, forms a wall of the conveying space, wherein the conveying element comprises, in a load-free state of the conveying element, a conveying surface which, viewed in a cross section of the conveying element, has a maximum transverse extent that is equivalent to a maximum transverse extent of the rigid wall of the conveying space element, which wall at least partly delimits at least the conveying space, wherein the conveying surface is utilizable in a targeted fashion for a conveyance of a fluid in the conveying space and/or through the conveying space.