Upper stomach gastric implants
First Claim
1. A passive intragastric obesity treatment implant, comprising:
- an esophageal mounting stent sized to anchor within the esophagus just above the esophageal sphincter, the stent having an accordion-like spiral structure including a plurality of triangular membranes that are each bordered on two sides by an upper strut and a lower strut, with an outer edge being free, the stent having a configuration that allows it to change its outer diameter while maintaining an inner diameter aperture substantially constant in a size suitable to allow passage of a food bolus; and
an enlarged cardia-stimulating umbrella tethered to the esophageal stent having a contracted columnar shape for delivery and an expanded splayed out shape that abuts against the cardia surrounding the esophageal sphincter,the implant being formed of materials that permit it to be compressed into a substantially linear transoral delivery configuration and that will resist degradation over a period of at least six months within the stomach.
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0 Petitions
Accused Products
Abstract
A variety of passive intragastric implant devices for obesity treatment are disclosed. Such passive devices do not autonomously change shape, but instead react within the stomach to induce satiety. The devices may provide slowed entry into the stomach, thus reducing the intake capacity. Additionally, the devices may contact areas within the stomach, such as the cardia surrounding the esophageal sphincter, to stimulate satiety-inducing nerves. Some devices combine two or more of these satiety-inducing features. Methods of implant are disclosed including compressing the devices within a delivery tube and transorally advancing the devices through the esophagus to be deployed within the stomach. Removal of the devices occurs in the reverse. The implants are formed of materials that permit the implant to be compressed into a substantially linear transoral delivery configuration and that will resist degradation over a period of at least six months within the stomach.
271 Citations
15 Claims
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1. A passive intragastric obesity treatment implant, comprising:
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an esophageal mounting stent sized to anchor within the esophagus just above the esophageal sphincter, the stent having an accordion-like spiral structure including a plurality of triangular membranes that are each bordered on two sides by an upper strut and a lower strut, with an outer edge being free, the stent having a configuration that allows it to change its outer diameter while maintaining an inner diameter aperture substantially constant in a size suitable to allow passage of a food bolus; and an enlarged cardia-stimulating umbrella tethered to the esophageal stent having a contracted columnar shape for delivery and an expanded splayed out shape that abuts against the cardia surrounding the esophageal sphincter, the implant being formed of materials that permit it to be compressed into a substantially linear transoral delivery configuration and that will resist degradation over a period of at least six months within the stomach. - View Dependent Claims (2, 3, 4)
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5. A passive intragastric obesity treatment implant, comprising:
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an esophageal mounting stent sized to anchor within the esophagus just above the esophageal sphincter, the stent having an accordion-like spiral structure including a plurality of triangular membranes that are each bordered on two sides by an upper strut and a lower strut, with an outer edge being free such that the stent having a configuration that allows it to change its outer diameter while maintaining an inner diameter aperture substantially constant in a size suitable to allow passage of a food bolus; and a cardia-stimulating structure tethered to the esophageal stent having a first shape for delivery through the esophagus and a second shape in which it is adapted to abut against the cardia surrounding the esophageal sphincter, the implant being formed of materials that will resist degradation over a period of at least six months within the stomach. - View Dependent Claims (6, 7, 8, 9)
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10. A passive intragastric obesity treatment implant, comprising:
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an esophageal mounting stent sized to anchor within the esophagus just above the esophageal sphincter, the stent having an accordion-like spiral structure including a plurality of membranes that are each bordered on two sides by an upper strut and a lower strut, adjacent membranes alternating at angles to one another to form a zig zag pattern around the stent, the stent maintaining an inner diameter aperture substantially constant in a size suitable to allow passage of a food bolus; and a cardia-stimulating structure tethered to the esophageal stent having a first shape for delivery through the esophagus and a second shape in which it is adapted to abut against the cardia surrounding the esophageal sphincter, the implant being formed of materials that will resist degradation over a period of at least six months within the stomach. - View Dependent Claims (11, 12, 13, 14, 15)
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Specification