Barry B Maxwell

US Patent:

20110276091, Nov 10, 2011

Filed:

Mar 10, 2011

Appl. No.:

13/045363

Inventors:

David A. Melanson - Hudson NH, US
Christopher Nutting - Newtonville MA, US
Barry Maxwell - Spencer MA, US
Peter Shank - Boylston MA, US
John Panek - Peabody MA, US

Assignee:

GI Dynamics, Inc. - Lexington MA

International Classification:

A61B 17/04

US Classification:

606232

Abstract:

An implant includes a collapsible anchor to be deployed within a lumen and a protrusion coupled to the anchor. The protrusion, in a constrained state, extends a distance from an exterior surface of the anchor and, in an unconstrained state, extends further from the exterior surface of the anchor. Also included is a biodegradable constraint, such as a biodegradable tube or suture, configured to maintain the protrusion in the constrained state until the constraint releases. The implant may include additional biodegradable constraints, each constraint configured to maintain the protrusion in a different constrained state and to degrade over a different predetermined period after the implant has been deployed within the lumen. The protrusion may include a bi-directional barb or an open loop. The protrusion may be configured to penetrate a wall of the lumen and to allow tissue to grow about the protrusion. The implant may also include an unsupported, thin-walled sleeve coupled to the anchor and configured to extend into the lumen upon deployment of the collapsible anchor.

US Patent:

20120179086, Jul 12, 2012

Filed:

Sep 10, 2010

Appl. No.:

13/394975

Inventors:

Peter Shank - Boylston MA, US
David A. Melanson - Hudson NH, US
Barry Maxwell - Spencer MA, US
Sean K. Holmes - West Roxbury MA, US
James Loper - Wales MA, US
Ian K. Parker - Bristol RI, US
Andy H. Levine - Newton MA, US

International Classification:

A61F 2/04

US Classification:

604 8

Abstract:

An implant () includes a protrusion () with an open or rounded loop () (or open head) connected to a collapsible anchor. The protrusion may include a straight length of wire () or a helical length wire, with one or more wire loops () at the end of the length forming the loop. Upon deployment within the gastrointestinal tract, the protrusion expands from a collapsed state, alongside the anchor, to a relaxed state, in which the protrusion extends outward from the anchor. As the protrusion expands to its relaxed state, it pushes the loop into the wall of the duodenum, causing the loop to penetrate the duodenal wall. A pocket of scar tissue forms about the head and possibly through an opening in the head, securing the anchor within the duodenum. The implant may also include a thin-walled sleeve that is coupled to the anchor and extended from the anchor into the intestine.

US Patent:

20140018719, Jan 16, 2014

Filed:

Jul 12, 2013

Appl. No.:

13/941087

Inventors:

Andy H. Levine - Newton MA, US
David A. Melanson - Hudson NH, US
Barry Maxwell - Spencer MA, US
Richard A. Gambale - Tyngsboro MA, US

International Classification:

A61F 5/00

US Classification:

604 8

Abstract:

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

US Patent:

20100305590, Dec 2, 2010

Filed:

May 26, 2010

Appl. No.:

12/787531

Inventors:

Sean K. Holmes - West Roxbury MA, US
Barry Maxwell - Spencer MA, US
Ezra S. Fishman - Cambridge MA, US

Assignee:

GI Dynamics, Inc. - Lexington MA

International Classification:

A61B 17/00

US Classification:

606151

Abstract:

Gastrointestinal implants can be used to secure thin-walled sleeves, restrictor plates, and other devices within the gastrointestinal tract. An example implant includes three elements: a stomach anchor to resist distally oriented forces; a duodenal anchor to resist proximally oriented forces; and a connector element to keep the stomach anchor fixed relative to the stomach anchor. The implant is inserted into the gastrointestinal tract with a delivery device that holds the implant in a compressed state for minimally invasive delivery until the implant is positioned properly. Upon releasing from the delivery device, the implant expands to a relaxed state across the pylorus, allowing prongs that extending outward from the stomach and duodenal anchors to engage tissue in the gastrointestinal tract. The deployed implant may also include a thin-walled sleeve that extends into the intestine from the stomach anchor, duodenal anchor, or connector element.

US Patent:

20220346934, Nov 3, 2022

Filed:

Apr 29, 2022

Appl. No.:

17/733509

Inventors:

- Boston MA, US
Ryan HANLON - Hudson NH, US
Ronald B. LAMPORT - Pelham NH, US
Barry MAXWELL - Spencer MA, US
John PANEK - Peabody MA, US
Ian PARKER - Bristol RI, US
Scott SCHORER - Duxbury MA, US
Nicholas WILLIAMS - Sydney, AU

Assignee:

GI Dynamics, Inc. - Boston MA

International Classification:

A61F 2/04
A61F 2/95
A61F 5/00

Abstract:

The present invention provides delivery systems for positioning a gastrointestinal implant in a patient, for example, for treatment of a metabolic disease. Also provided are methods for assembling the delivery systems, methods of positioning a gastrointestinal implant, and methods of treatment of metabolic diseases, such as type 2 diabetes, non-alcoholic steatohepatitis (NASH), non-alcoholic fatty liver disease (NAFLD), obesity, and related comorbidities thereof.

US Patent:

20210205065, Jul 8, 2021

Filed:

Jan 30, 2017

Appl. No.:

16/073652

Inventors:

- Boston MA, US
Ryan HANLON - Hudson NH, US
Ronald B. LAMPORT - Pelham NH, US
Barry MAXWELL - Spencer MA, US
John PANEK - Peabody MA, US
Ian K. PARKER - Bristol RI, US
Scott SCHORER - Duxbury MA, US
Nicholas WILLIAMS - Sydney, AU

Assignee:

GI Dynamics, Inc. - Boston MA

International Classification:

A61F 2/04
A61F 5/00
A61F 2/95

Abstract:

The present invention provides delivery systems for positioning a gastrointestinal implant in a patient, for example, for treatment of a metabolic disease. Also provided are methods for assembling the delivery systems, methods of positioning a gastrointestinal implant, and methods of treatment of metabolic diseases, such as type 2 diabetes, non-alcoholic steatohepatitis (NASH), non-alcoholic fatty liver disease (NAFLD), obesity, and related comorbidities thereof.

US Patent:

20210085499, Mar 25, 2021

Filed:

May 18, 2020

Appl. No.:

16/876724

Inventors:

- Boston MA, US
Barry MAXWELL - Spencer MA, US
Ezra S. FISHMAN - Cambridge MA, US

International Classification:

A61F 5/00
A61B 17/11

Abstract:

Gastrointestinal implants can be used to secure thin-walled sleeves, restrictor plates, and other devices within the gastrointestinal tract. An example implant includes three elements: a stomach anchor to resist distally oriented forces; a duodenal anchor to resist proximally oriented forces; and a connector element to keep the stomach anchor fixed relative to the stomach anchor. The implant is inserted into the gastrointestinal tract with a delivery device that holds the implant in a compressed state for minimally invasive delivery until the implant is positioned properly. Upon releasing from the delivery device, the implant expands to a relaxed state across the pylorus, allowing prongs that extending outward from the stomach and duodenal anchors to engage tissue in the gastrointestinal tract. The deployed implant may also include a thin-walled sleeve that extends into the intestine from the stomach anchor, duodenal anchor, or connector element.

US Patent:

20200237193, Jul 30, 2020

Filed:

Jan 31, 2020

Appl. No.:

16/779037

Inventors:

- Boston MA, US
David A. MELANSON - Hudson NH, US
Barry MAXWELL - Spencer MA, US
Ian K. PARKER - Bristol RI, US

International Classification:

A61B 1/00
A61F 5/00

Abstract:

An endoscope hood device for moving a gastrointestinal implant device within a natural lumen of a gastrointestinal tract. The endoscope hood device comprises an atraumatic flared retrieval hood configured to attach to and fit over a distal end of an endoscope. The atraumatic flared retrieval hood comprises a length configured to cover a plurality of protrusions on a surface of the gastrointestinal implant device, the plurality of protrusions comprising both proximal facing protrusions and distal facing protrusions of the gastrointestinal implant device. The atraumatic flared retrieval hood comprises a diameter configured to fit within a human esophagus without damage to the esophagus, and comprises a material of a bend radius configured to move slidably against the esophagus without damage to the esophagus.