Patent ID: 9278019
Filing Date: 2016-03-08
CPC Classification: A61F

Claim Text:
1. A gastrointestinal device for implanting within a pylorus, a duodenal bulb, and a duodenum of a patient's gastrointestinal tract, the device configured to have an expanded configuration and a contracted configuration, the device comprising: an expandable structure including a proximal portion having a first diameter in the expanded configuration that is configured for engaging a first wall of the pylorus at a first location adjacent the pyloric antrum and having a coil compression spring, and a distal portion having a second diameter in the expanded configuration that is configured for engaging a second wall of the pylorus at a second location adjacent the duodenal bulb and having a coil compression spring, the proximal and distal portions coupled by a central cylinder portion having a third diameter in the expanded configuration that is less than the first diameter and less than the second diameter but equal to or larger than a maximum diameter of the pylorus such that the central cylinder portion does not restrict flow through the pylorus and has a length greater than a width of the pylorus, wherein the coil compression springs of the proximal and the distal portions extend radially outward to the first and second diameters, respectively, and extend circumferentially around the central cylinder; a membrane coupled to and covering at least a portion of one of the proximal portion and the distal portion of the expandable structure; and an intestinal bypass sleeve coupled to at least one of the proximal and distal portions of the expandable structure and having a length sufficient to extend at least partially into the duodenum; wherein, in the expanded configuration, the proximal portion has a diameter larger than a maximum opening diameter of the pylorus and wherein, in the expanded configuration, the distal portion has a diameter larger than a maximum opening diameter of the pylorus, and further wherein the proximal and distal portions are spaced apart at discrete locations along the central cylinder.