when a patient is fitted with an external gastrostomy connection to the stomach , ingested food can be removed through the gastrostomy connection using a pump - based or siphon - based system to achieve weight loss . the process of removing ingested food can be improved by alternating the infusion of liquid into the stomach with the removal of material from the stomach . optionally , stomach acid may be captured and returned to the stomach . optionally , nutritional supplements or medicines may be added to the infused liquid . optionally , a flush mount connectorized system with a built in valve may be used to simplify the interface with the gastrostomy hardware that remains installed in the patient . optionally , the system may be configured to disable itself from further use after a triggering event has occurred .