# US 8,465,447 B2 · Anti-obesity diverter structure > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,465,447 B2 - Document ID: US8465447B2 - Status: Granted - Kind: B2 - Application number: 13/659,617 - Filed: 2012-10-24 - Published: 2013-02-28 - Granted: 2013-06-18 - Earliest claimed: 2006-05-30 - Assignees: Boston Scientific Scimed, Inc. - Applicants: Boston Scientific Scimed, Inc. - Inventors: Katie Krueger; Harold M. Martins - Web page: https://patentgrep.com/patent/US8465447B2 ## CPC - A61F 5/0079: {Pyloric or esophageal obstructions} - 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} - A61M 27/008: {pre-shaped, for use in the urethral or ureteral tract} - A61F 2002/044: {Oesophagi or esophagi or gullets} - 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) - A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)} ## Abstract A system for inducing weight loss in a patient, includes (a) an elongated element extending from a proximal end to a distal end, the elongated element separating a duodenum into first and second channels, wherein the elongated element is expandable; and (b) a retainer connected to the elongated element and securing the elongated element in a desired orientation within the duodenum. In the desired orientation, all chyme flowing through the duodenum enters the first channel and the second channel is open to a papilla of vater so that digestive fluids from the papilla of vater enter the second channel. ## Claims ### Claim 1 A method for inducing weight loss in a patient, comprising: inserting an elongated element to a desired position within a duodenum with an outer surface of the elongated element contacting an inner surface of the duodenum to separate the duodenum into first and second longitudinal channels, the elongated element extending from a proximal end to a distal end, the elongated element being positioned so that all chyme flowing through the duodenum enters the first channel and the second channel is open to a papilla of vater so that digestive fluids from the papilla of vater enter the second channel, wherein the elongated element is expandable; connecting the elongated element to the duodenum using a retainer. ### Claim 2 (depends on 1) The method of claim 1, further comprising: inserting a funnel into the duodenum so a proximal end thereof is positioned proximally of a pylorus and a distal end thereof is positioned distally of the pylorus, wherein a diameter of the proximal end is greater than a diameter of the pylorus; and inserting a funnel retainer within the duodenum proximally of the pylorus and connected to the proximal end of the funnel to retain the funnel in a desired position. ### Claim 3 (depends on 1) The method of claim 1, wherein the elongated element is formed of a semi-permeable material having a predetermined rate of permeability. ### Claim 4 (depends on 1) The method of claim 1, wherein the proximal end of the elongated structure is positioned adjacent a pylorus. ### Claim 5 (depends on 1) The method of claim 1, wherein the elongated element is positioned to bisect the duodenum so that the first and second channels have substantially the same volume. ### Claim 6 A method for inducing weight loss in a patient, comprising: inserting an elongated element to a desired position within a duodenum with an outer surface of the elongated element contacting an inner surface of the duodenum to separate the duodenum into first and second longitudinal channels, the elongated element extending from a proximal end to a distal end and being positioned so that all chyme flowing through the duodenum enters the first channel and the second channel is open to a papilla of vater so that digestive fluids from the papilla of vater enter the second channel; inserting a funnel into the duodenum so a proximal end thereof is positioned proximally of a pylorus and a distal end thereof is open to the first longitudinal channel to guide a flow of chyme thereinto, a diameter of the proximal end of the funnel being greater than a diameter of the pylorus. ### Claim 7 (depends on 6) The method of claim 6, further comprising the step of inserting a funnel retainer within the duodenum proximally of the pylorus and connected to the proximal end of the funnel to retain the funnel in a desired position. ### Claim 8 (depends on 6) The method of claim 6, wherein the elongated element is expandable. ### Claim 9 (depends on 8) The method of claim 8, further comprising the step of moving the elongated element to an expanded state. ### Claim 10 (depends on 6) The method of claim 6, further comprising the step of treating the elongated element with an anti-thrombogenic agent.