Intragastric device

摘要

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.

主权项

1. An intragastric balloon configured to have a useful life in an in vivo gastric environment of at least 30 days, comprising:
an initial fill gas consisting essentially of an inert gas and CO2, wherein the inert gas is excess in concentration to CO2 in the initial fill gas and wherein the CO2 is at a similar concentration to gastric pCO2; 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 the inert gas and the concentration of CO2 in the initial fill gas; and a valve system configured for introducing the initial fill gas into the lumen of the balloon in the in vivo gastric environment.