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Intragastric device with expandable portions

  • US 10,537,453 B2
  • Filed: 10/26/2016
  • Issued: 01/21/2020
  • Est. Priority Date: 12/16/2015
  • Status: Active Grant
First Claim
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1. An intragastric balloon configured to reside in an in vivo gastric environment for at least 30 days, comprising:

  • a polymeric wall configured to have, under conditions of an in vivo gastric environment, a permeability to CO2 of more than 10 cc/m2/day, such that a rate and an amount of diffusion of CO2 from the in vivo gastric environment into a lumen of the intragastric balloon through the polymeric wall is controlled, at least in part, by a concentration of an inert gas in an initial fill gas, wherein the polymeric wall is formed of a flexible material, wherein the flexible material includes one or more non-expandable sections and one or more expandable sections, wherein the expandable sections are configured to stretch from 10% to 400% in response to an increased volume of a fluid inside the lumen of the intragastric balloon; and

    a valve system configured for introducing the initial fill gas into the lumen of the intragastric balloon in the in vivo gastric environment.

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