Esophageal sleeve

A device for treating acid reflux comprising a sleeve configured and dimensioned for insertion into an esophagus of a patient, the sleeve having a proximal portion, a distal portion and an intermediate portion between the distal and proximal portions, the sleeve including an inner member extending from a proximal region of the sleeve to a distal region of the sleeve, the inner member applying a radial force on the sleeve along a length thereof for securement within the esophagus, and a skirt connected to the sleeve to block acid backup from a stomach while not inhibiting passage of food into the stomach, the skirt positioned within the sleeve and axially spaced from the inner member, the skirt movable between an open position and a closed blocking position within the sleeve, wherein the skirt includes a plurality of flaps extending toward the inner member when food passes through the skirt toward the stomach.