Transpyloric anchoring
Inventors
Chamorro, III, Andres • Levine, Andy H. • Melanson, David A. • Maxwell, Barry • Gambale, Richard A.
Assignees
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Publication Number
US-11000396-B2
Publication Date
2021-05-11
Expiration Date
Abstract
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.
Core Innovation
The invention provides a transpyloric gastrointestinal implant/anchoring device that positions a planar proximal element in a stomach to resist distal migration, and a distal intestinal element in an intestine to resist proximal migration. The proximal and distal elements are coupled across the pylorus by one or more tethers, so that the implant spans the pyloric region while maintaining positional resistance.
The implant optionally includes tissue-sealing and chyme-related features, such as a distal element that is configured to seal and/or channel chyme, and a restrictor concept associated with the distal intestinal element. The disclosed configurations include a wave anchor, stent, or planar variant and a flexible sleeve or barrier sleeve option, with the distal element optionally changing shape under tether tension.
The invention also addresses removal of the transpyloric gastrointestinal implant. The disclosed removal approach severs the one or more tethers, removes the planar proximal element proximally out of the stomach through a mouth using a catheter, and grasps a drawstring with a distal grasper to remove the distal element proximally out of the intestine and through the mouth.
Claims Coverage
The claim coverage identifies 5 inventive features.
Severing tethers coupling planar proximal and distal elements across the pylorus
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.
Catheter removal of the planar proximal element through the mouth
Removing the planar proximal element proximally out of the stomach through a mouth with a catheter.
Distal grasper drawstring removal of the distal element through the mouth
Grasping a drawstring with a grasper on a distal end of the catheter, and removing the distal element proximally out of the intestine, through the stomach and out of the mouth.
Overtube passage for proximal element removal
Removing the planar proximal element by passing the planar proximal element through an overtube.
Radial collapsing of the distal element into a retrieval hood
Removing the distal element by collapsing the distal element radially into a retrieval hood.
The claim set centers on a removal sequence that severs tethers, then uses a catheter to withdraw a planar proximal element through a mouth, and uses a distal grasper to pull a drawstring to withdraw a distal element through the mouth; dependent refinements specify overtube passage for the proximal element and radial collapsing of the distal element into a retrieval hood.
Stated Advantages
Documented Applications
No documented applications found
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