Intestinal barrier sleeve with expandable anchor section

An intestinal barrier sleeve comprising an expanding anchor section coupled to a tubular section at an interface therebetween at a proximal end of the tubular section, the expanding anchor section expandable from at least one collapsed position to at least one expanded position, the tubular section being coupled to one or more weighted elements at an opposite end of the interface, wherein in the at least one collapsed position the at least one expanded section has a compact shape that allows the sleeve to be placed into a subject's gastrointestinal tract endoscopically and in the at least one expanded position the expanding anchor section retains the sleeve in the subject's stomach near the gastrointestinal tract, wherein:

• the expanding anchor section has a conical shape with a hole therein at a narrow end of the conical shape, and wherein the conical shape is in communication with a lumen of the tubular section through the hole;
• the expanding anchor section comprises a plurality of backbone elements, the plurality of backbone elements extend radially from the narrow end of the conical shape;
• the expanding anchor section further comprises a plurality of petal- like elements extending radially from the narrow end of the conical shape and wherein the backbone elements are joined to the petal-like elements along a length of the petal-like elements and terminate in bulbous elements at outward ends of the petal-like elements;
• and
• each of the petal-like elements partially overlap with at least one other petal-like element as the expanding anchor section is expanded to the at least one expanded position.

An intestinal barrier sleeve comprising an expanding section coupled to a tubular section at an interface therebetween, the expanding section expandable from at least a first collapsed position to at least one expanded position, wherein:

• the expanding section has a conical shape with a hole therein at a narrow end of the conical shape;
• the conical shape is in communication with a lumen of the tubular section through the hole:
• the tubular section s coupled to one or more weighted elements at an opposite end of the interface;
• the expanding section comprises a plurality of petal-like elements extending radially from the narrow end of the conical shape;
• the petal-like elements are interconnected with a webbing to form the conical shape;
• the petal-like elements further comprise a plurality of backbone elements extending radially from the narrow end of the conical shape, wherein the plurality of backbone elements are joined to the petal-like elements along a length of the petal-like elements and terminate in bulbous elements at outward ends of the petal-like elements;
• and
• each of the petal-like elements partially overlap with at least one other petal-like element as the expanding section is expanded to the at least one expanded position.