Barry L Maxwell

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:

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:

20190000658, Jan 3, 2019

Filed:

Jan 29, 2018

Appl. No.:

15/881875

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:

20140296770, Oct 2, 2014

Filed:

May 13, 2014

Appl. No.:

14/276697

Inventors:

- Lexington MA, US
Barry Maxwell - Spencer MA, US
Ezra S. Fishman - Cambridge MA, US

Assignee:

Gl Dynamics, Inc. - Lexington MA

International Classification:

A61F 5/00

US Classification:

604 9, 604 8

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.