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US 2012/0232576 A1Published application
Intragastric device
AssigneeObalon Therapeutics, Inc.
InventorsMark C. Brister, Andrew P. Rasdal, Neil R. Drake, Matthew S. Lake, Dubravka Markovic, Amy D.L. VandenBerg, Antonio C. Llevares, Josefina Nider
Life of this patent
Estimating the term…
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.
Claims12
An intragastric balloon configured to have a useful life in an in vivo gastric environment of 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 balloon through the polymeric wall is controlled, at least in part, by a concentration of an inert gas and a concentration of CO2 in an initial fill gas, wherein the concentration of CO2 in the initial fill gas is characteristic of gastric pCO2;
- and
- a valve system configured for introducing the initial fill gas into the lumen of the balloon in the in vivo gastric environment.
A method for inflating an intragastric balloon, comprising:
- introducing, in an in vivo intragastric environment, an initial fill gas comprising an inert gas and CO2 into a lumen of an intragastric balloon through a valve system, the intragastric balloon 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;
- and
- exposing the balloon to the in vivo intragastric environment for a useful life of at least 30 days, wherein a rate and an amount of diffusion of CO2 from the in vivo gastric environment into the lumen of the balloon through the polymeric wall is controlled, at least in part, by a concentration of an inert gas and a concentration of CO2 in an initial fill gas, wherein the concentration of CO2 in the initial fill gas is characteristic of gastric pCO2.
Dependencies are inferred from the claim text.