Antiobesity flow controller.

- An anti-obesity flow controller (12, 12a), comprising: a tubular structure (40) having outer and inner surfaces (42, 45), said tubular structure (40) having proximal and distal ends (47, 50 ), said tubular structure (40) having a lumen (52) having an outer periphery defined by said inner surface (45), said tubular structure (40) being sized to fit within the duodenum in a substantially coaxial relationship therewith, said tubular structure (40) being impermeable or semipermeable to the digestive fluid and the chyme within the duodenum; and characterized by: a transport structure (61), at least part of which is connected with said outer surface (42), said transport structure (61) extending to said distal end (50); a retention structure (62) connected to said tubular structure (40), said retention structure (62) being attached to said tubular structure (40) within the duodenum such that said transport structure (61) is positioned to receive the digestive fluid from the Vater's papilla on the inner surface of the duodenum, said transport structure (61) providing a conduit for the digestive fluid therein to flow to said distal end, further securing said retention structure (62) to said tubular structure (40) within the duodenum such that said proximal end has a proximal position in relation to the Vater's papilla, which further holds said retention structure (62) to said tubular structure (40) within the duodenum of such such that said distal end has a distal position in relation to the Vater's papilla, which further attaches said retention structure (62) to said tubular structure (40) within the duodenum d and such that said proximal end (47) communicates with the pylorus to enable the chyme to flow, from there, into said lumen (52); and a control structure (55) connected to said inner surface (45) of said tubular structure (40) to change the speed of the chyme flowing within said lumen (52) from said proximal to the distal ends; wherein the tubular structure (40) extends along the length of the control structure (55).