Endoscopic gastric bypass

• US 20040039452A1
• Filed: 08/26/2002
• Published: 02/26/2004
• Est. Priority Date: 08/26/2002
• Status: Active Grant

• Current Assignee: Trustees Of Columbia University In The City Of New York (Columbia University)
• Original Assignee: Trustees Of Columbia University In The City Of New York (Columbia University)
• Inventors: Bessler, Marc
• Granted Patent: US 7,211,114 B2
• Time in Patent Office: Days
• US Class Current: 623/23.65
• CPC Class Codes: A61F 2/07 Stent-grafts
• CPC Class Codes: A61F 2/2412 with soft flexible valve members, e.g. tissue valves shaped like natural valves check valves with flexible valve members in general F16K15/14
• CPC Class Codes: A61F 2/89 the wire-like elements comprising two or more adjacent rings flexibly connected by separate members
• CPC Class Codes: A61F 2002/044 Oesophagi or esophagi or gullets
• CPC Class Codes: A61F 5/0076 preventing normal digestion, e.g. Bariatric or gastric sleeves

Abstract

An endoscopic device separates ingested food from gastric fluids or gastric fluids and digestive enzymes, to treat obesity. In a particular embodiment a gastric bypass stent comprises a tubular member and two or more stent members defining a lumen. The tubular member has a substantially liquid impervious coating or covering and one or more lateral openings to permit one-way liquid flow.

Claims

1. An endoscopic device for separating ingested food from gastric fluids in a patient.

2. The endoscopic device of claim 1, wherein only a small portion of the ingested food is contacted with gastric fluids.

3. The endoscopic device of claim 1, wherein the ingested food is substantially separated from gastric fluids.

4. The endoscopic device of claim 1, which also separates ingested food from digestive enzymes in a portion of a patient'"'"'s small bowel.

5. The endoscopic device of claim 4, wherein only a small portion of the ingested food is contacted with digestive enzymes in a patient'"'"'s small bowel.

6. The endoscopic device of claim 4, wherein the ingested food is substantially separated from digestive enzymes.

7. The endoscopic device of claim 1, which is used to treat obesity.

8. A method of treating obesity, wherein a device is endoscopicly positioned in a patient'"'"'s digestive tract to separate ingested food from gastric fluids.

9. The method of claim 8, wherein the device is positioned to separate ingested food from gastric fluids and digestive enzymes.

10. The method of claim 8, wherein the device is positioned to extend from at or above the patient'"'"'s gastroesophageal junction to or beyond the patient'"'"'s duodenum.

11. A gastric bypass stent comprising a tubular member and two or more stent members defining a lumen and having a first end and a second end, wherein said tubular member has a substantially liquid impervious coating or covering.

12. The bypass stent of claim 11, wherein the stent members each comprise expandable structures.

13. The bypass stent of claim 11, wherein the stent members are self-expanding.

14. The bypass stent of claim 11, wherein each stent member is expandable or self-expanding.

15. The bypass stent of claim 11, wherein at least one of the stent members comprises a one-way valve member with regard to liquid or solids entering the stent lumen.

16. The bypass stent of claim 15, wherein the valve member has a distal section that extends distally to or past the distal end of the tubular member.

17. The bypass stent of claim 16, wherein the distal section has one or more lateral openings to permit one-way liquid flow.

18. The bypass stent of claim 17, wherein the lateral openings comprise one-way valves to permit gastric fluid to enter the distal section.

19. The bypass stent of claim 11, wherein the tubular member has one or more lateral openings to permit one-way liquid flow.

20. The bypass stent of claim 19, wherein the stent lateral openings comprise one-way valves to permit gastric fluid to enter the stent.

21. The bypass stent of claim 20, wherein at least one one-way valve is in fluid communication with tubing that extends distally.

22. The bypass stent of claim 21, wherein the tubing extends to or past the distal end of the tubular member.

23. The bypass stent of claim 11, which comprises biocompatible, acid-resistant materials.

24. A method for treating obesity wherein a stent of claim 11 is inserted into a patient'"'"'s gastrointestinal tract to extend from at or above the patient'"'"'s gastro-esophageal junction to or beyond the patient'"'"'s duodenum.

25. The bypass stent of claim 24 which comprises two or more adjacently positioned stent members.