Intragastric implants with duodenal anchors
First Claim
1. An implantable device configured to be placed in a patient'"'"'s stomach and duodenum region transorally without surgery to treat and prevent obesity, comprising:
- an inflatable gastric balloon defining an inflatable space and residing in the patient'"'"'s stomach and formed of a material that can withstand the acidic environment of the patient'"'"'s stomach for at least 6 months, the gastric balloon having an inflated volume sufficient to ensure that the gastric balloon cannot pass through patient'"'"'s pylorus;
an inflatable intra-duodenal balloon defining an inflatable space and having a deflated volume that will fit within the patient'"'"'s duodenum and allow food to pass and an inflated volume that contacts the walls of the duodenum;
a fluid transfer conduit coupled between the inflatable space of the gastric balloon and the inflatable space of the intra-duodenal balloon; and
a first valve located between, and in fluid communication with, the inflatable space of the gastric balloon and the inflatable space of the intra-duodenal balloon, the first valve configured to allow fluid to flow freely from the inflatable space of the gastric balloon to the fluid transfer conduit and limit backflow of fluid from the fluid transfer conduit to the inflatable space of the gastric balloon.
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Accused Products
Abstract
Intragastric fluid transfer devices and related methods for operation thereof are disclosed. The intragastric fluid transfer devices and related methods are intended to assist a patient in maintaining a healthy body weight by stimulating the inner stomach walls and/or the inner duodenum walls. Features of the intragastric fluid transfer device include insertion of the devices transorally and without invasive surgery, without associated patient risks of invasive surgery, and without substantial patient discomfort. The life span of these intragastric fluid transfer devices may be material-dependent upon long-term survivability within an acidic stomach, but is intended to last one year or longer.
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Citations
20 Claims
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1. An implantable device configured to be placed in a patient'"'"'s stomach and duodenum region transorally without surgery to treat and prevent obesity, comprising:
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an inflatable gastric balloon defining an inflatable space and residing in the patient'"'"'s stomach and formed of a material that can withstand the acidic environment of the patient'"'"'s stomach for at least 6 months, the gastric balloon having an inflated volume sufficient to ensure that the gastric balloon cannot pass through patient'"'"'s pylorus; an inflatable intra-duodenal balloon defining an inflatable space and having a deflated volume that will fit within the patient'"'"'s duodenum and allow food to pass and an inflated volume that contacts the walls of the duodenum; a fluid transfer conduit coupled between the inflatable space of the gastric balloon and the inflatable space of the intra-duodenal balloon; and a first valve located between, and in fluid communication with, the inflatable space of the gastric balloon and the inflatable space of the intra-duodenal balloon, the first valve configured to allow fluid to flow freely from the inflatable space of the gastric balloon to the fluid transfer conduit and limit backflow of fluid from the fluid transfer conduit to the inflatable space of the gastric balloon. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A passive intragastric obesity treatment implant, comprising:
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a series of inflatable members connected together with intermediate tethers, each of the inflatable members having slots or flutes on their external surfaces, the inflatable members each having a size that will not pass through the pyloric sphincter and together taking up volume within the stomach of at least 400 ml and being made of a material that will resist degradation over a period of at least six months within the stomach; and a duodenal anchor connected to a distal inflatable member with a distal tether, the duodenal anchor having a size that permits it to pass through the pyloric sphincter and be formed of a material of sufficient mass and specific gravity that prevents it from migrating back up through the pyloric sphincter. - View Dependent Claims (9, 10, 11)
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12. A passive intragastric obesity treatment implant, comprising:
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an expandable frame formed of a plurality of longitudinally extending struts, the struts being circumferentially spaced apart on a common circumference, and the frame having an expanded diameter sufficient to prevent passage through the pyloric sphincter; a tether connected to a distal end of the frame; and a duodenal anchor connected to one end of the tether, the duodenal anchor having a size that permits it to pass through the pyloric sphincter and be formed of a material of sufficient mass and specific gravity that prevents it from migrating back up through the pyloric sphincter, the implant being formed of a material which permits it to be compressed into a substantially linear delivery configuration and that will resist degradation over a period of at least six months within the stomach. - View Dependent Claims (13, 14, 15, 19, 20)
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16. A passive intragastric obesity treatment implant, comprising:
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an inflatable member having an inflated size sufficient to occupy space within the stomach and preventing passage down the pylorus or back up through the esophageal sphincter; a ribbed duodenal sleeve for positioning in the duodenum and being reinforced to prevent kinking, wherein the duodenal sleeve comprises a flexible sleeve wall reinforced by a plurality of longitudinally spaced loops, wherein the longitudinal spacing between adjacent loops is less than a diameter of the loops; and a tether attaching the duodenal sleeve to the inflatable member, the implant being formed of a material which permits it to be compressed into a substantially linear delivery configuration and that will resist degradation over a period of at least six months within the stomach. - View Dependent Claims (17, 18)
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Specification