Bariatric sleeve
First Claim
1. A gastrointestinal implant device for being removably fastened to a predetermined location within the gastrointestinal tract, the device comprising:
- a flexible sleeve, open at both ends, and configured to extend within the intestine, the sleeve being formed of expanded polytetrafluoroethylene and being at least one foot in length, the sleeve being noncompliant and having a coefficient of friction less than about 0.2, the sleeve being conformable to collapse in the intestine to a small volume; and
a radially collapsible sleeve anchor that maintains a cylindrical form in relaxed and collapsed states, the sleeve anchor being coupled to a proximal portion of the sleeve and configured to removably anchor the sleeve within the digestive system at or distal to the pylorus; and
bi-directional barbs extending from the exterior surface of the sleeve anchor, each barb comprising two tines with ends directed in opposite directions from each other and outwardly from the anchor, of which one tine is so oriented at an oblique angle as to prevent longitudinal movement of the device in a first direction and another tine is so oriented at an oblique angle as to prevent longitudinal movement of the device in a second direction substantially opposite to the first direction.
1 Assignment
0 Petitions
Accused Products
Abstract
Method and apparatus for limiting absorption of food products in specific parts of the digestive system is presented. A gastrointestinal implant device is anchored in the stomach and extends beyond the ligament of Treitz. All food exiting the stomach is funneled through the device. The gastrointestinal device includes an anchor for anchoring the device to the stomach and a flexible sleeve. When implanted within the intestine, the sleeve can limit the absorption of nutrients, delay the mixing of chyme with digestive enzymes, altering hormonal triggers, providing negative feedback, and combinations thereof. The anchor is collapsible for endoscopic delivery and removal.
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Citations
13 Claims
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1. A gastrointestinal implant device for being removably fastened to a predetermined location within the gastrointestinal tract, the device comprising:
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a flexible sleeve, open at both ends, and configured to extend within the intestine, the sleeve being formed of expanded polytetrafluoroethylene and being at least one foot in length, the sleeve being noncompliant and having a coefficient of friction less than about 0.2, the sleeve being conformable to collapse in the intestine to a small volume; and a radially collapsible sleeve anchor that maintains a cylindrical form in relaxed and collapsed states, the sleeve anchor being coupled to a proximal portion of the sleeve and configured to removably anchor the sleeve within the digestive system at or distal to the pylorus; and bi-directional barbs extending from the exterior surface of the sleeve anchor, each barb comprising two tines with ends directed in opposite directions from each other and outwardly from the anchor, of which one tine is so oriented at an oblique angle as to prevent longitudinal movement of the device in a first direction and another tine is so oriented at an oblique angle as to prevent longitudinal movement of the device in a second direction substantially opposite to the first direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A gastrointestinal implant device for being removably fastened to a predetermined location within the gastrointestinal tract, the device comprising:
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a flexible sleeve, open at both ends, and configured to extend within the intestine, the sleeve being unsupported at a distal end, the sleeve being at least one foot in length, and the sleeve being formed of expanded polytetrafluoroethylene, the sleeve being noncompliant and having a coefficient of friction less than about 0.2, the sleeve being conformable to collapse in the intestine to a small volume; a radially collapsible sleeve anchor that maintains a cylindrical form in relaxed and collapsed states, the sleeve anchor being coupled to a proximal portion of the sleeve and configured to removably anchor the sleeve at or distal to the pylorus in the intestine; and bi-directional barbs extending from the exterior surface of the sleeve anchor, the barbs being adapted to anchor the proximal portion of the sleeve to muscle, each barb comprising two tines with ends directed in opposite directions from each other and outwardly from the anchor, of which one tine is so oriented at an oblique angle as to prevent longitudinal movement of the device in a first direction and another tine is so oriented at an oblique angle as to prevent longitudinal movement of the device in a second direction substantially opposite to the first direction. - View Dependent Claims (11, 12, 13)
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Specification