A gastrointestinal implant device includes a flexible, floppy sleeve, open
at both ends, that extends into the duodenum. The device further includes
a collapsible anchor coupled to the proximal portion of the sleeve. The
device further includes a drawstring that is threaded through a proximal
end of the anchor, and barbs that extend from the exterior surface of the
anchor. The collapsible anchor can be a wave anchor. The drawstring can
be used to collapse at least a proximal portion of the implant device.
This is useful in removing or repositioning the implant device.