Methods, devices, and systems for obesity treatment
In one aspect, an obesity treatment device includes multiple inflatable space-filling compartments and a valve system for introducing fluid into each compartment, where the device forms, upon filing the compartments, to a curved shape conforming to a natural three-dimensional kidney shape of the stomach. In one aspect, a method for deploying a gastric balloon structure in a gastric cavity includes determining dimensions of the gastric cavity in a feeding state, selecting a fill volume for each of a number of isolated chambers of the balloon structure, and filling each chamber while the balloon structure is in the gastric cavity. In one aspect, a system for treating obesity includes a means for conforming a flexible, space-filling structure to a natural kidney shape of the gastric cavity, a means for maintaining at least two isolated inflatable regions of the flexible, space-filling structure, and a means for introducing fluid into each inflatable region.
1. A method for deploying a dual balloon system in a gastric cavity of a patient, comprising:
introducing at least a first gastric balloon and a second gastric balloon to the gastric cavity, each of said balloons having a respective fill volume and a respective inflation lumen;
at least partially filling each of the first gastric balloon and the second gastric balloon with a same type of fluid such that the first and second gastric balloons cooperatively form the dual balloon system that floats within the gastric cavity;
wherein the first gastric balloon and the second gastric balloon are non-concentric and adjacent,
wherein the inflation lumen of the first gastric balloon is separate from the inflation lumen of the second gastric balloon,
wherein at least partially filling each of the first gastric balloon and the second gastric balloon comprises introducing fluid into the respective balloon via its respective inflation lumen,
wherein neither of the first and the second gastric balloon is tethered in the gastric cavity after inflation.
2. The method of claim 1 , wherein the dual balloon system, upon inflation, floats within the gastric cavity without exerting pressure at any point in the gastric cavity sufficient to cause ulceration.
3. The method of claim 2 , wherein at least partly filling the first gastric balloon and the second gastric balloon comprises:
releasably attaching an inflation tube to at least one of the first and second gastric balloons; and
introducing a fluid into the first gastric balloon and the second gastric balloon.
4. The method of claim 3 , wherein introducing at least the first gastric balloon and the second gastric balloon to the gastric cavity comprises introducing each gastric balloon through an esophagus of the patient.
5. The method of claim 4 , wherein a diameter of each of the first and second gastric balloons is no larger than 2 centimeters prior to inflation.
6. The method of claim 1 , wherein after inflation an outer surface of each of the first and second gastric balloons abuts against greater or lesser curvature of the gastric cavity.
7. The method of claim 1 , wherein a flexible central spine structure spans a gap between and connects the first gastric balloon and the second gastric balloon.
8. The method of claim 7 , wherein the flexible central spine structure is in fluid communication with a valve system.
9. A system for treating obesity, comprising:
a first means for, upon inflation, occupying a first volume of a patient's stomach and floating in the patient's stomach; and
a second means for, upon inflation, occupying a second volume of the patient's stomach adjacent to and abutting the first volume and floating in said patient's stomach;
wherein the first means for occupying and floating includes a first means for receiving and retaining a gas such that the first means for occupying and floating occupies said first volume;
wherein the second means for occupying and floating includes a second means for receiving and retaining a gas such that the second means for occupying and floating occupies said second volume adjacent to and abutting the first volume;
wherein the first means for occupying and floating and the second means for occupying and floating are adapted to be removed after deflation through an esophagus of the patient.
10. The system of claim 9 , wherein the first means for occupying and floating and the second means for occupying and floating are configured to float without exerting pressure at any point in the stomach sufficient to cause ulceration.
11. The system of claim 10 , wherein undue pressure against the stomach is avoided in part by a buoyancy provided by the gas.
12. The system of claim 9 , further comprising a means for flexibly connecting the first means for occupying and floating and the second means for occupying and floating.