Multi-lumen device with non collapsable minor lumen

A method of producing a multi-lumen elongate body for a medical device, the method comprising:

• extruding a first layer of material over a first lumen tube and a second lumen tube to form an elongate body with a first lumen and a second lumen
• depositing a mesh layer over the elongate body;
• and
• extruding a second layer of material over the mesh layer,
• the first layer of material being composed of a first material having a first durometer and each of the first lumen tube and the second lumen tube being composed of a second material having a second durometer that is greater than the first durometer, the first lumen tube and the second lumen tube each being sufficiently stiff such that patency of the first lumen tube and the second lumen tube is maintained during the steps of extruding the first layer of material, depositing the mesh layer, and extruding the second layer of material.