Patent ID: 9597173
Date: 2017-03-21
CPC Classifications: A61F,A61M

Claim:
1. A method for inducing weight loss in a patient, comprising: inserting first and second elongated elements of a stent to a desired position within a duodenum with an outer surface of the stent contacting an inner surface of the duodenum so that all chyme flowing through the duodenum enters the stent, the first elongated element defining a first longitudinal channel extending therethrough from a first proximal end to a first distal end, the second elongated element defining a second longitudinal channel extending therethrough from a second distal end to a second proximal end at which a radially outer portion of the second elongated element is coupled to the first elongated element so that substantially all chyme flowing through the duodenum enters the second longitudinal channel, a distal portion of the second elongated element having an outer diameter less than an inner diameter of the first elongated element to form an annular space between the first and second elongated elements, the second elongated element being constructed to have a rate of permeability no greater than a desired maximum rate of permeability, wherein the desired position within the duodenum is selected so that the first proximal end is proximal of a papilla of vater and a port extending through the first elongated element to the annular space is located adjacent to the papilla of vater; and connecting the stent to the duodenum using a retainer.