Stomach bypass for the treatment of obesity
First Claim
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1. A device for diverting passage of food through an alimentary canal comprising:
- an elongated element having a channel extending therethrough from a proximal end to a distal end, the proximal end being sized and shaped so that, when inserted to a desired position, an outer surface of the proximal end engages an inner surface of an esophagus adjacent an opening of a stomach, the distal end being sized and shaped so that, when inserted to the desired position, an outer surface of the distal end engages an inner surface of a duodenum, the elongated element being constructed to have rate of permeability with respect to digestion fluids no greater than a predetermined maximum permeability to reduce a level of absorption of food, the elongated element including a distensible area positionable within the stomach, the distensible area having a diameter increased with respect to portions of the elongated element proximal and distal thereto so that food passing through the elongated element will be stored in the distensible area for a period of time; and
a first retainer sized and shaped to retain the elongated element at the desired position relative to the esophagus and duodenum.
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Abstract
The present application provides devices and methods for inducing weight loss. In particular, the present application provides devices which are secured in the stomach or external to the stomach to reduce digestion and/or absorption of food in accordance with the methods of the invention.
34 Citations
18 Claims
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1. A device for diverting passage of food through an alimentary canal comprising:
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an elongated element having a channel extending therethrough from a proximal end to a distal end, the proximal end being sized and shaped so that, when inserted to a desired position, an outer surface of the proximal end engages an inner surface of an esophagus adjacent an opening of a stomach, the distal end being sized and shaped so that, when inserted to the desired position, an outer surface of the distal end engages an inner surface of a duodenum, the elongated element being constructed to have rate of permeability with respect to digestion fluids no greater than a predetermined maximum permeability to reduce a level of absorption of food, the elongated element including a distensible area positionable within the stomach, the distensible area having a diameter increased with respect to portions of the elongated element proximal and distal thereto so that food passing through the elongated element will be stored in the distensible area for a period of time; and a first retainer sized and shaped to retain the elongated element at the desired position relative to the esophagus and duodenum. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A device for diverting passage of food, comprising:
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an elongated element having a channel extending therethrough from a proximal end to a distal end, the proximal end being sized and shaped so that, when inserted to a desired position, an outer surface of the proximal end engages an inner surface of an esophagus adjacent an opening of a stomach, the distal end being sized and shaped so that, when inserted to the desired position, an outer surface of the distal end engages an inner surface of a duodenum, the elongated element being constructed to have rate of permeability with respect to digestion fluids no greater than a predetermined maximum permeability to reduce a level of absorption of food, a portion of the channel being enlarged as a distensible area such that a diameter of the portion of the channel of the distensible area is increased with respect to portions of the channel proximal and distal thereto, the distensible area structured so that food passing through the elongated element will be stored therein for a period of time; and a retainer sized and shaped to retain the elongated element at the desired position relative to the esophagus and duodenum.
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Specification