Stomach bypass for the treatment of obesity

Patent metadata

Field	Value
Publication number	US-10052220-B2
Application number	US-90098410-A
Country	US
Kind code	B2
Filing date	Oct 8, 2010
Priority date	Oct 9, 2009
Publication date	Aug 21, 2018
Grant date	Aug 21, 2018

Abstract

The present application provides devices and methods for inducing weight loss. In particular, the present application provides devices which are secured in the stomach or external to the stomach to reduce digestion and/or absorption of food in accordance with the methods of the invention.

First claim

What is claimed is:

1. A device for diverting passage of food through an alimentary canal comprising:
an elongated element having a channel extending therethrough from a proximal end to a distal end, the proximal end being sized and shaped so that, when inserted to a desired position, an outer surface of the proximal end engages an inner surface of an esophagus adjacent an opening of a stomach, the distal end being sized and shaped so that, when inserted to the desired position, an outer surface of the distal end engages an inner surface of a duodenum, the elongated element being constructed to have rate of permeability with respect to digestion fluids no greater than a predetermined maximum permeability to reduce a level of absorption of food, the elongated element including a distensible area positionable within the stomach, the distensible area having a diameter increased with respect to portions of the elongated element proximal and distal thereto so that food passing through the elongated element will be stored in the distensible area for a period of time; and
a first retainer sized and shaped to retain the elongated element at the desired position relative to the esophagus and duodenum.

2. The device of claim 1 , wherein the maximum rate of permeability is selected to allow a predetermined partial absorption of digestion fluids.

3. The device of claim 1 , wherein the first retainer is an expandable element sized and shaped for insertion within the elongated element.

4. The device of claim 3 , wherein the first retainer is formed as one of a sponge and an inflatable balloon.

5. The device of claim 1 , wherein the first retainer is positioned about an outer surface of the elongated element.

6. The device claim 5 , wherein the first retainer is one of a stent and an anchoring balloon.

7. The device of claim 1 , wherein an outer surface of the elongated element is one of partially and completely coated.

8. The device of claim 1 , further comprising a loose fabric structure attached to an outer surface of the elongated element.

9. The device of claim 1 , wherein the first retainer is sized and shaped to be positioned adjacent the proximal end of the elongated element.

10. The device of claim 9 , further comprising a second retainer sized and shaped to the positioned adjacent the distal end of the elongated element.

11. The device of claim 1 , wherein the first retainer is formed as one of a circumferential groove and a protuberance on an outer surface of the elongated element.

12. The device of claim 1 , wherein a first portion of the first retainer is one of roughened and knurled to aid in anchoring thereof within the body.

13. The device of claim 1 , wherein the first retainer is one of (a) an elongated arcuate anchor transversely secured to the elongated body, the anchor being configured to extend radially outward from the elongated element, (b) a suture and (c) an adhesive.

14. The device of claim 1 , further comprising an adjustable band positioned over an outer wall of the elongated element to adjust a diameter thereof.

15. The device of claim 6 , wherein the stent is formed of elongate filaments that are one of braided, wound and arranged in a zig-zag pattern.

16. The device of claim 6 , wherein the stent comprises one or both of an outer covering and an inner liner.

17. The device of claim 1 , wherein the distensible area is formed as a pouch.

18. A device for diverting passage of food, comprising:
an elongated element having a channel extending therethrough from a proximal end to a distal end, the proximal end being sized and shaped so that, when inserted to a desired position, an outer surface of the proximal end engages an inner surface of an esophagus adjacent an opening of a stomach, the distal end being sized and shaped so that, when inserted to the desired position, an outer surface of the distal end engages an inner surface of a duodenum, the elongated element being constructed to have rate of permeability with respect to digestion fluids no greater than a predetermined maximum permeability to reduce a level of absorption of food, a portion of the channel being enlarged as a distensible area such that a diameter of the portion of the channel of the distensible area is increased with respect to portions of the channel proximal and distal thereto, the distensible area structured so that food passing through the elongated element will be stored therein for a period of time; and
a retainer sized and shaped to retain the elongated element at the desired position relative to the esophagus and duodenum.

Assignees

• Ryan Shawn
• Weitzner Barry
• Boston Scient Scimed Inc

Inventors

• Ryan Shawn
• Weitzner Barry

Classifications

• A61F2/07

  Stent-grafts · CPC title

• A61F5/0076 Primary

  preventing normal digestion, e.g. Bariatric or gastric sleeves · CPC title

• A61F2/04

  Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts (A61F2/18, A61F2/20 take precedence; instruments specially adapted for placement or removal of stents or stent-grafts A61F2/95) · CPC title

• A61F2002/045

  Stomach, intestines · CPC title

• A61F2002/044

  Oesophagi or esophagi or gullets · CPC title