# US 11,000,396 B2 · Transpyloric anchoring

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- Number: US 11,000,396 B2
- Document ID: US11000396B2
- Status: Granted
- Kind: B2
- Application number: 16/175,330
- Filed: 2018-10-30
- Published: 2019-10-03
- Granted: 2021-05-11
- Earliest claimed: 2012-07-13
- Assignees: GI Dynamics, Inc.
- Applicants: GI Dynamics, Inc.
- Inventors: Andres Chamorro, III; Andy H. Levine; David A. Melanson; Barry Maxwell; Richard A. Gambale
- Web page: https://patentgrep.com/patent/US11000396B2

## CPC

- A61F 5/0036: {Intragastrical devices}
- 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 5/0076: {preventing normal digestion, e.g. Bariatric or gastric sleeves}
- A61F 5/0079: {Pyloric or esophageal obstructions}
- A61F 5/0089: {Instruments for placement or removal}
- A61F 2002/045: {Stomach, intestines}
- 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)

## Abstract

A gastrointestinal implant device (2800) comprises a planar proximal element (220) configured to reside in a stomach to resist distal migration, a distal element (222) configured to reside in an intestine to resist proximal migration and one or more tethers (224) coupling the planar proximal element to the distal element.

## Claims

### Claim 1

A method of removing a gastrointestinal implant, the method comprising:
severing one or more tethers that couples a planar proximal element of the gastrointestinal implant in a stomach with a distal element of the gastrointestinal implant in an intestine;
with a catheter, removing the planar proximal element proximally out of the stomach through a mouth; and
with a grasper on a distal end of the catheter, grasping a drawstring to remove the distal element proximally out of the intestine, though the stomach and out of the mouth.

### Claim 2 (depends on 1)

The method of claim 1, wherein removing the planar proximal element comprises passing the planar proximal element through an overtube.

### Claim 3 (depends on 1)

The method of claim 1, wherein removing the distal element comprises collapsing the distal element radially into a retrieval hood.