Removal and repositioning devices

• US 9,095,416 B2
• Filed: 06/03/2014
• Issued: 08/04/2015
• Est. Priority Date: 12/09/2003
• Status: Expired due to Fees

• Current Assignee: GI Dynamics Incorporated
• Original Assignee: GI Dynamics Incorporated
• Inventors: Meade, John C., Levine, Andy H., Melanson, David A., Lamport, Ronald B., Cvinar, John F.
• Primary Examiner(s): Wiest, Philip R
• Application Number:
  US14/294,786
• Publication Number:
  US 20140296768A1
• Time in Patent Office: 427 Days
• Field of Search: 604 8- 10, 623/1.15, 623 2364- 237, 606/151, 606/191, 600/37
• US Class Current: 1/1
• 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 device combining a positioning device for positioning an implantable device within a natural bodily lumen with the implantable device, comprising:

an endoscope defining a lumen, the endoscope providing an outer tube of the positioning device;

an inner tube defining a lumen and adapted for insertion into the endoscope;

an elongated member having a proximal end and a distal end, the elongated member slidably disposed within the lumen of the inner tube;

a grasper disposed at the distal end of the elongated member, adapted to engage the implantable device to collapse at least a portion of the implantable device when operated;

an atraumatic flared retrieval hood attached to and fitting over the distal end of the endoscope; and

the implantable device, wherein the implantable device comprises;

a flexible, floppy sleeve, open at both ends, to extend into the duodenum;

a collapsible anchor coupled to a proximal portion of the sleeve; and

a drawstring threaded through a proximal end of the anchor and drawn into the inner tube by the grasper;

at least a proximal portion of the anchor being captured within the retrieval hood.

2. The device of claim 1, wherein the elongated member is a wire.

3. The device of claim 1, wherein the grasper is a hook.

4. The device of claim 1, wherein the grasper is a spade.

5. The device of claim 1, wherein the grasper is a rat-tooth grasper.

6. The device of claim 1, wherein the inner tube is flexible.

7. The device of claim 1, wherein the retrieval hood is flexible transparent plastic.

8. The device of claim 1, wherein the retrieval hood includes an alignment feature to facilitate engagement of the implantable device.

9. The device of claim 8, wherein the alignment feature of the retrieval hood is an interior ramp.

10. The device of claim 1, wherein the elongated member is rotatably disposed within the lumen of the inner tube.

11. The device of claim 1, further comprising a retrieval locking mechanism for locking the grasper with respect to the retrieval hood.

12. The device of claim 1, further comprising a radiopaque marker marking the distal end of the inner tube.

13. The device of claim 1, further comprising a grasper locking mechanism to lock the grasper in place relative to the inner tube once the implantable device is collapsed.

14. The device of claim 1, wherein the implantable device further comprises at least one barb extending from the exterior surface of the anchor.

15. The device of claim 1, wherein the implantable device further comprises at least one protrusion extending from the exterior surface of the anchor.