Abstract: A multi-lumen enteral feeding and medicating device having a gastric tube adapted to be introduced into the interior of a patient's stomach through a stoma. The gastric tube has a balloon to engage and seal against the interior wall of the stomach around the stoma and a locking ring to engage the skin of the patient surrounding the exterior opening of the stoma. A jejunal tube is slidably engaged in the gastric tube for relative longitudinal sliding displacement so that the distal end of the jejunal tube may be threaded through the stomach into the jejunum for introduction of a fluent material through ports adjacent the distal end of the jejunal lumen. A fluid lumen is provided in the gastric tube for applying positive and negative pressure to the interior of the balloon to extend and retract the same and an inlet attachment is provided for accessing the gastric lumen for introducing fluent material into the stomach through the gastric lumen.