Satiation devices and methods
First Claim
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1. A method for inducing weight loss in a patient having a stomach, an antrum, and a pylorus, the method comprising the steps of:
- positioning a prosthesis within a patient'"'"'s stomach, the prosthesis having a proximal opening and a distal opening and a passage extending between the proximal and distal openings;
causing the patient to ingest food material, at least a portion of the food material passing through the proximal opening into the prosthesis;
allowing food material to exit the prosthesis and to flow into the pylorus; and
allowing gastric secretions of the stomach to flow around at least a portion of the prosthesis and into the pylorus.
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Abstract
A satiation device is described which includes a sheath or liner extending from the proximal or middle stomach to the distal antrum. Food ingested by the patient passes through the sheath or liner, thereby minimizing contact between the ingested food and the stomach. It is believed that over time, reduced contact between food and the stomach will result in decreased Ghrelin production by the patient and a consequent decrease in appetite. In some embodiments, the satiation device may also include a proximal pouch and/or a distal bypass tube.
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Citations
55 Claims
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1. A method for inducing weight loss in a patient having a stomach, an antrum, and a pylorus, the method comprising the steps of:
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positioning a prosthesis within a patient'"'"'s stomach, the prosthesis having a proximal opening and a distal opening and a passage extending between the proximal and distal openings;
causing the patient to ingest food material, at least a portion of the food material passing through the proximal opening into the prosthesis;
allowing food material to exit the prosthesis and to flow into the pylorus; and
allowing gastric secretions of the stomach to flow around at least a portion of the prosthesis and into the pylorus. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 31, 32)
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30. An apparatus for inducing weight loss in a patient, the apparatus comprising:
a prosthesis having a proximal opening and a distal opening and a passage between the proximal and distal openings, at least a portion of the prosthesis positionable within a patient'"'"'s stomach, the proximal opening proportioned to receive at least a portion of food material ingested by the patient, and the distal opening proportioned to permit said food material to exit the prosthesis and to flow into the pylorus, the prosthesis configured to permit gastric secretions of the stomach to flow around at least a portion of the prosthesis and into the pylorus - View Dependent Claims (33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55)
Specification