Intragastric implants with multiple fluid chambers

摘要

An intragastric obesity treatment implant promotes a feeling of satiety in the patient by contacting the insides of the stomach wall, reducing the space in the stomach, or otherwise reducing the amount of food consumed. One intragastric obesity treatment implant two inflatable balloons coupled via a flow restrictor through which fluid may flow in response to peristaltic motions of a patient's stomach. Additionally, one implant comprises a pumping chamber coupled to a reservoir, where the pumping chamber moves stomach fluids into the reservoir in response to peristaltic motions of the patient's stomach.

主权项

1. An intragastric obesity treatment implant, comprising:
a first inflatable balloon configured to be disposed in a patient's stomach, wherein the first inflatable balloon is configured to be inflated with a fluid after implantation in the patient's stomach; a second inflatable balloon fluidly coupled to the first inflatable balloon such that the inflatable balloons have a longitudinal length that substantially spans the stomach and the second inflatable balloon is positioned adjacent the cardia, wherein the second inflatable balloon is configured to be inflated with a fluid after implantation in the patient's stomach; an elongated member extending between and spacing the first and second inflatable balloons, the elongated member defining a fluid passageway in communication with the first and second balloons, the elongated member including a flow restrictor that reduces the size of the passageway while allowing and regulating fluid flow between the first and the second inflatable balloons, wherein the first inflatable balloon is constructed to receive an applied peristaltic inward pressure on the first inflatable balloon that compresses the first balloon to increase the pressure of the fluid within the first inflatable balloon to a pressure that exceeds the pressure of the fluid in the second inflatable balloon to displace a portion of the fluid within the first inflatable balloon through the flow restrictor and into the second inflatable balloon, and wherein the second inflatable balloon is constructed to receive the portion of the fluid from the first inflatable balloon to expand the second inflatable balloon to exert pressure on the cardia and induce a feeling of satiety in the patient and to equalize fluid pressure in the first and second inflatable balloons, and wherein the quantity of the portion of fluid displaced is based on a difference in pressure between fluid in the first inflatable balloon and fluid in the second inflatable balloon.