Anti-obesity devices

• US 7,122,058 B2
• Filed: 12/02/2003
• Issued: 10/17/2006
• Est. Priority Date: 12/02/2002
• Status: Expired due to Fees

• Current Assignee: GI Dynamics Incorporated
• Original Assignee: GI Dynamics Incorporated
• Inventors: Melanson, David A., Meade, John C., Levine, Andy H.
• Primary Examiner(s): Stewart, Alvin J.
• Application Number:
  US10/726,011
• Publication Number:
  US 20050085923A1
• Time in Patent Office: 1,050 Days
• Field of Search: 623/1.11, 623/23.65, 623/23.64, 623/23.67, 606/198, 606/200, 606/195, 606/194, 606/196, 606/197, 606/108, 606191-193
• US Class Current: 623/23.65
• CPC Class Codes: A61B 17/0401 Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors A61B17/0642 takes precedence; fixation devices for tendons or ligaments A61F2/0811
• CPC Class Codes: A61B 17/0469 Suturing instruments for use in minimally invasive surgery, e.g. endoscopic surgery
• CPC Class Codes: A61B 17/0482 Needle or suture guides guides for drills, pins or wire A61B17/17; for puncturing needles A61B17/3403
• CPC Class Codes: A61B 17/1114 of the digestive tract, e.g. bowels or oesophagus
• CPC Class Codes: A61B 2017/00238 Type of minimally invasive operation A61B2017/00805 takes precedence
• CPC Class Codes: A61B 2017/00867 shape memory effect for prostheses A61F2210/0014
• CPC Class Codes: A61B 2017/0419 H-fasteners
• CPC Class Codes: A61B 2017/061 hollow or tubular suture extending inside a hollow needle A61B2017/06052; hollow sutures A61B2017/06185
• 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 2/07 Stent-grafts
• CPC Class Codes: A61F 2/848 having means for fixation to the vessel wall, e.g. barbs
• CPC Class Codes: A61F 2/90 characterised by a net-like or mesh-like structure
• CPC Class Codes: A61F 2/95 Instruments specially adapted for placement or removal of stents or stent-grafts
• CPC Class Codes: A61F 2002/044 Oesophagi or esophagi or gullets
• CPC Class Codes: A61F 2002/045 Stomach, intestines
• CPC Class Codes: A61F 2002/075 the stent being loosely attached to the graft material, e.g. by stitching
• CPC Class Codes: A61F 2002/8483 Barbs
• CPC Class Codes: A61F 2002/8486 provided on at least one of the ends
• CPC Class Codes: A61F 2002/9528 for retrieval of stents
• CPC Class Codes: A61F 2220/0016 with sharp anchoring protrusions, e.g. barbs, pins, spikes
• CPC Class Codes: A61F 2250/0039 : differing in diameter
• 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

Method and apparatus for limiting absorption of food products in specific parts of the digestive system is presented. A gastrointestinal implant device is anchored in the stomach and extends beyond the ligament of Treitz. All food exiting the stomach is funneled through the device. The gastrointestinal device includes an anchor for anchoring the device to the stomach and a flexible sleeve to limit absorption of nutrients in the duodenum. The anchor is collapsible for endoscopic delivery and removal.

Claims

1. A delivery system for placing a gastrointestinal implant device in a body comprising:

an outer sheath for storing therewithin a proximal portion of the gastrointestinal implant device, the proximal portion of the gastrointestinal implant device including a self-expanding sleeve anchor to anchor the device, the outer sheath moveable relative to the sleeve anchor to release the sleeve anchor from within the outer sheath;

an inner sheath within the outer sheath, the inner sheath defining a lumen and extending distally beyond the outer sheath;

a moveable element moveable within the lumen of the inner sheath to secure the distal end of a sleeve to the inner sheath, the sleeve coupled at its proximal end to the sleeve anchor;

a sleeve release mechanism coupled to the moveable element to release the distal end of the sleeve; and

an atraumatic element at the distal end of the delivery system, the atraumatic element being releasably held to the inner sheath.

2. The delivery system of claim 1, wherein the moveable element is a sleeve retention wire, which exits the lumen of the inner sheath and pierces the distal end of the sleeve.

3. The delivery system of claim 1, wherein the outer sheath is pulled toward a proximal end of the delivery system to remove the sleeve anchor from the outer sheath.

4. The delivery system of claim 1, wherein the sleeve release mechanism pulls the moveable element toward a proximal end of the delivery system to release the distal end of the sleeve after the sleeve anchor has been released.

5. The delivery system of claim 1, wherein a distal portion of the sleeve is stored in a pill for delivery and the distal portion of the sleeve is released from the pill by peristalsis.

6. The delivery system of claim 1, wherein a distal portion of the sleeve is stored in a dissolvable pill for delivery.

7. The delivery system of claim 1, wherein the atraumatic element is attached to an element retention wire which is held by the moveable element.

8. The delivery system of claim 1, wherein the moveable element is looped through the atraumatic element.

9. The delivery system of claim 1, wherein a distal end of the moveable element is coiled and stored within the atraumatic element.

10. The delivery system of claim 1, wherein the moveable element is held in an S-shaped track within the atraumatic element.

11. The delivery system of claim 1, wherein the atraumatic element at the distal end of the delivery system is an expandable balloon.

12. The delivery system of claim 1, wherein the inner sheath includes a another lumen through which a fluid is passed to release the sleeve from the distal end of the delivery system.

13. The delivery system of claim 1 wherein the atraumatic element is remotely releasable.

14. The delivery system of claim 1, wherein the sleeve release mechanism pulls the moveable element toward a proximal end of the delivery system to release the atraumatic element after the sleeve anchor has been released.

15. The delivery apparatus of claim 1, wherein the atraumatic element comprises a ball.

16. The delivery apparatus of claim 1, wherein the atraumatic element is spherically shaped.

17. The delivery apparatus of claim 1, wherein the atraumatic element is inflatable.