Intragastric device with expandable portions
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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Abstract
Devices and methods for treating obesity are provided. More particularly, intragastric devices and methods of fabricating, deploying, inflating, monitoring, and retrieving the same are provided.
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Citations
20 Claims
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1. An intragastric balloon configured to reside in an in vivo gastric environment for at least 30 days, comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification