# US 7,122,058 B2 · Anti-obesity devices

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- Number: US 7,122,058 B2
- Document ID: US7122058B2
- Status: Granted
- Kind: B2
- Application number: 10/726,011
- Filed: 2003-12-02
- Published: 2005-04-21
- Granted: 2006-10-17
- Earliest claimed: 2003-10-17
- Assignees: GI Dynamics, Inc.
- Inventors: Andy H. Levine; David A. Melanson; John C. Meade
- Web page: https://patentgrep.com/patent/US7122058B2

## CPC

- A61F 5/0076: {preventing normal digestion, e.g. Bariatric or gastric sleeves}
- 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)}
- A61B 17/0469: {Suturing instruments for use in minimally invasive surgery, e.g. endoscopic surgery}
- A61B 17/1114: {of the digestive tract, e.g. bowels or oesophagus}
- A61F 2/04: 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)
- A61F 2/07: Stent-grafts
- A61F 5/0089: {Instruments for placement or removal}
- A61B 17/0482: {Needle or suture guides (guides for drills, pins or wire A61B17/17; guides for puncturing needles A61B17/3403)}
- A61B 2017/00238: {Type of minimally invasive operation (A61B2017/00805 takes precedence)}
- A61B 2017/00867: {shape memory effect}
- A61B 2017/0419: {H-fasteners}
- A61B 2017/061: {hollow or tubular}
- A61F 2/848: having means for fixation to the vessel wall, e.g. barbs
- A61F 2/90: characterised by a net-like or mesh-like structure
- A61F 2/95: Instruments specially adapted for placement or removal of stents or stent-grafts
- A61F 2002/044: {Oesophagi or esophagi or gullets}
- A61F 2002/045: {Stomach, intestines}
- A61F 2002/075: {the stent being loosely attached to the graft material, e.g. by stitching}
- A61F 2002/8483: {Barbs}
- A61F 2002/8486: {provided on at least one of the ends}
- A61F 2002/9528: {for retrieval of stents}
- A61F 2220/0016: with sharp anchoring protrusions, e.g. barbs, pins, spikes
- A61F 2250/0039: differing in diameter
- A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C)
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## 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

### Claim 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.

### Claim 2 (depends on 1)

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.

### Claim 3 (depends on 1)

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.

### Claim 4 (depends on 1)

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.

### Claim 5 (depends on 1)

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.

### Claim 6 (depends on 1)

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

### Claim 7 (depends on 1)

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

### Claim 8 (depends on 1)

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

### Claim 9 (depends on 1)

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

### Claim 10 (depends on 1)

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

### Claim 11 (depends on 1)

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

### Claim 12 (depends on 1)

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.

### Claim 13 (depends on 1)

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

### Claim 14 (depends on 1)

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.

### Claim 15 (depends on 1)

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

### Claim 16 (depends on 1)

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

### Claim 17 (depends on 1)

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