Gastric Bypass Devices and Methods

• US 20070265709A1
• Filed: 02/24/2005
• Published: 11/15/2007
• Est. Priority Date: 02/25/2004
• Status: Abandoned Application

• Current Assignee: Mayo Foundation For Medical Education And Research (Mayo Clinic)
• Original Assignee: Mayo Foundation For Medical Education And Research (Mayo Clinic)
• Inventors: Bennet, Kevin, Gostout, Christopher, Rajan, Elizabeth
• Application Number:
  US10/590,229
• Publication Number:
  US 20070265709A1
• Time in Patent Office: Days
• US Class Current: 623/23.640
• CPC Class Codes: A61F 2/04 Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts A61F2/18, A61F2/20 take precedence; devices, other than stent-grafts, providing patency to, or preventing collapsing of, tubular structures of the body other than stent-grafts, e.g. stents A61F2/82; instruments specially adapted for placement or removal of stents or stent-grafts A61F2/95
• CPC Class Codes: A61F 2002/044 Oesophagi or esophagi or gullets
• CPC Class Codes: A61F 5/003 inflatable
• CPC Class Codes: A61F 5/0076 preventing normal digestion, e.g. Bariatric or gastric sleeves

Abstract

Devices and methods for achieving weight loss in obese and morbidly obese patients are disclosed. The invention combines a gastric and/or small bowel bypass (in which ingested food bypasses the stomach and, optionally, at least a portion of the small bowel) and a satiety device in the form of one or more expandable chambers, that tend to induce a feeling of satiety after the patient has consumed a relatively small amount of food. This combination of gastric and/or small bowel bypass and satiety structure may be delivered and removed using minimally invasive procedures such as an endoscope. In some instances, the gastric and/or small bowel bypass device itself can form the satiety structure. In other devices, the gastric bypass may be independent of the satiety structure (which may be provided as one or more expandable chambers).

Claims

1. An implantable gastrointestinal device comprising:

a gastric bypass comprising an inlet and an outlet;

an expandable chamber attached to the gastric bypass;

an optional esophageal extension attached to the inlet of the gastric bypass, wherein food passes into the gastric bypass through the esophageal extension;

an optional small bowel extension attached to the outlet of the gastric bypass, wherein the small bowel extension receives material exiting the outlet of the gastric bypass.

2. A device according to claim 1, wherein the gastric bypass comprises a flaccid gastric bag.

3. A device according to claim 1, wherein the gastric bypass comprises ribbing molded therein, wherein the ribbing maintains an open volume in the gastric bypass in the absence of compressive forces thereon.

4. A device according to claim 1, wherein the gastric bypass comprises a sleeve containing a wire, wherein the sleeve and wire cooperate to maintain an open volume in the gastric bypass in the absence of compressive forces thereon.

5. An implantable gastrointestinal device comprising:

a gastric bypass comprising an inlet and an outlet;

an expandable chamber attached to an outer surface of the gastric bypass, wherein the expandable chamber comprises a plurality of adjacent subchambers in fluid communication with each other, wherein the plurality of adjacent subchambers are distributed over at least a portion of the outer surface of the gastric bypass, and wherein the plurality of adjacent subchambers maintain an open volume in the gastric bypass in the absence of compressive forces thereon;

an optional esophageal extension attached to the inlet of the gastric bypass, wherein food passes into the gastric bypass through the esophageal extension;

an optional small bowel extension attached to the outlet of the gastric bypass, wherein the small bowel extension receives material exiting the outlet of the gastric bypass.

6. A device according to claim 5, wherein the plurality of adjacent subchambers are arranged in a quasi-geodesic pattern.

7. An implantable gastro-intestinal device comprising:

a gastric bypass comprising an inlet and an outlet;

an expandable toroidal chamber located proximate the inlet of the gastric bypass, wherein the toroidal chamber holds the inlet in an open configuration when the toroidal chamber is inflated;

an optional esophageal extension attached to the inlet of the gastric bypass, wherein food passes into the gastric bypass through the esophageal extension;

an optional small bowel extension attached to the outlet of the gastric bypass, wherein the small bowel extension receives material exiting the outlet of the gastric bypass.

8. A device according to claim 7, wherein the gastric bypass is flaccid outside of the toroidal chamber.

9. A device according to claim 7, wherein the toroidal chamber is asymmetric.