Device and system for gastric volume reduction to facilitate weight loss
First Claim
1. An ingestible and biologically inert gastric volume reduction device comprising:
- a controllably adjustable volume subsystem including a titration system being repeatedly adjustable between an expansion mode of the device and a contraction mode of the device, wherein in the expansion mode, the device increases its volume and in the contraction mode, the device decreases its volume, the titration system comprising a first gas agent that expands the volume in the expansion mode and a second gas agent that reacts with the first gas agent to reduce the volume in the contraction mode; and
a control subsystem including a sensor and a receiver coupled to the volume subsystem and configured to repeatedly selectively set the mode of the device between the expansion mode and the contraction mode;
wherein the titration system, in response to control from the control subsystem, is configured to release the first gas agent in the expansion mode and is configured to release the second gas agent in the contraction mode to reduce the volume to a size that is small enough to allow the device to pass through an intestinal system.
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Accused Products
Abstract
An ingestible gastric volume reduction device (100) is provided that is controllably adjustable between an expanded state and a contracted state. A control subsystem within the device is able to selectively transition the device between both states. Such control can be by way of a biological or chemical sensor (102) in the device, a wireless (RF) receiver (104), or timer. Thus activation of the device whether to expand and fill a gastric volume or to contract to open up the gastric volume may be achieved from internal control (within device) or external control (to the device). The device may be used for patient treatment, by administering the device (e.g., through ingestion) to a gastric region and then controllably increasing and/or decreasing the volume of the device during treatment.
26 Citations
18 Claims
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1. An ingestible and biologically inert gastric volume reduction device comprising:
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a controllably adjustable volume subsystem including a titration system being repeatedly adjustable between an expansion mode of the device and a contraction mode of the device, wherein in the expansion mode, the device increases its volume and in the contraction mode, the device decreases its volume, the titration system comprising a first gas agent that expands the volume in the expansion mode and a second gas agent that reacts with the first gas agent to reduce the volume in the contraction mode; and a control subsystem including a sensor and a receiver coupled to the volume subsystem and configured to repeatedly selectively set the mode of the device between the expansion mode and the contraction mode; wherein the titration system, in response to control from the control subsystem, is configured to release the first gas agent in the expansion mode and is configured to release the second gas agent in the contraction mode to reduce the volume to a size that is small enough to allow the device to pass through an intestinal system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification