Gastrointestinal implant with drawstring

• US 8,057,420 B2
• Filed: 12/20/2007
• Issued: 11/15/2011
• Est. Priority Date: 12/09/2003
• Status: Active Grant

• Current Assignee: GI Dynamics Incorporated
• Original Assignee: GI Dynamics Incorporated
• Inventors: Melanson, David A., Meade, John C., Lamport, Ronald B., Levine, Andy H., Cvinar, John F.
• Primary Examiner(s): Deak; Leslie R.
• Assistant Examiner(s): Wiest; Philip R
• Application Number:
  US12/005,049
• Publication Number:
  US 20080234834A1
• Time in Patent Office: 1,426 Days
• Field of Search: 604 8- 10, 623/1.15, 623 2364- 2368, 606/151, 606/191, 600/37
• US Class Current: 604/8
• CPC Class Codes: A61B 1/00089 Hoods
• CPC Class Codes: A61B 1/018 for receiving instruments
• CPC Class Codes: A61B 17/221 Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions surgical snare instruments A61B17/32056
• CPC Class Codes: A61B 2017/00296 mounted on an endoscope
• CPC Class Codes: A61B 2017/00336 with a protective sleeve, e.g. retractable or slidable
• CPC Class Codes: A61B 2017/00349 Needle-like instruments having hook or barb-like gripping means, e.g. for grasping suture or tissue A61B17/06066 takes precedence
• CPC Class Codes: A61B 2017/22035 for retrieving or repositioning foreign objects
• CPC Class Codes: A61B 2017/2215 having an open distal end
• CPC Class Codes: A61B 2017/347 Locking means, e.g. for locking instrument in cannula
• 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 5/0076 preventing normal digestion, e.g. Bariatric or gastric sleeves
• CPC Class Codes: A61F 5/0089 Instruments for placement or removal

Abstract

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.

Claims

1. A gastrointestinal implant device comprising:

a flexible sleeve, open at both ends, to extend into the duodenum, the sleeve having a smooth exterior surface to prevent tissue in-growth;

a collapsible anchor coupled to a proximal portion of the sleeve, the anchor being a wave anchor comprising interconnected struts with a webbing material coupled to the struts, the webbing material having a smooth exterior surface to prevent in-growth, and the anchor being configured to be retained within the duodenal bulb;

a drawstring threaded through a proximal end of the anchor; and

rigid protrusions extending radially outward from the exterior surface of the anchor at fixed angles.

2. The implant of claim 1, wherein the drawstring is woven over and under the struts.

3. The implant of claim 2, further comprising a second drawstring that is woven over and under the struts.

4. The implant of claim 2, further comprising a second drawstring that is woven through pairs of holes between the struts.

5. The implant of claim 1, wherein the sleeve is at least one foot in length.

6. The implant of claim 1, wherein the protrusions are barbs that penetrate muscle.

7. A method of repositioning a gastrointestinal device within a natural bodily lumen comprising:

engaging a drawstring disposed on the implantable device, the implantable device comprising;

a flexible sleeve, open at both ends, to extend into the duodenum, the sleeve having a smooth exterior surface to prevent tissue in-growth;

a collapsible anchor coupled to a proximal portion of the sleeve, the anchor being a wave anchor comprising interconnected struts with a webbing material coupled to the struts, the webbing material having a smooth exterior surface to prevent in-growth, and the anchor being configured to be retained within the duodenal bulb;

the drawstring threaded through a proximal end of the anchor; and

rigid protrusions extending radially outward from the exterior surface of the anchor at fixed angles;

radially collapsing at least a proximal portion of the implantable device by pulling the drawstring; and

moving the implantable device within the natural bodily lumen.

8. The method of claim 7, wherein the drawstring is woven over and under the struts.

9. The method of claim 8, further comprising a second drawstring that is woven over and under the struts.

10. The method of claim 8, further comprising a second drawstring that is woven through pairs of holes between the struts.

11. The method of claim 7 wherein the sleeve is at least one foot in length.

12. The method of claim 7, wherein the repositioning comprises removing the implantable device from the patient'"'"'s body.

13. The method of claim 7, wherein the protrusions are barbs that penetrate muscle.