Transpyloric anchoring
A gastrointestinal implant device ( 2800 ) comprises a planar proximal element ( 220 ) configured to reside in a stomach to resist distal migration, a distal element ( 222 ) configured to reside in an intestine to resist proximal migration and one or more tethers ( 224 ) coupling the planar proximal element to the distal element.
1. A method of removing a gastrointestinal implant, the method comprising:
severing one or more tethers that couples a planar proximal element of the gastrointestinal implant in a stomach with a distal element of the gastrointestinal implant in an intestine;
with a catheter, removing the planar proximal element proximally out of the stomach through a mouth; and
with a grasper on a distal end of the catheter, grasping a drawstring to remove the distal element proximally out of the intestine, though the stomach and out of the mouth.
2. The method of claim 1 , wherein removing the planar proximal element comprises passing the planar proximal element through an overtube.
3. The method of claim 1 , wherein removing the distal element comprises collapsing the distal element radially into a retrieval hood.