Delivery system and method of delivery for treating obesity
First Claim
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1. A delivery system for introducing an obesity device into a gastric lumen, comprising:
- an overtube including a proximal end and a distal end;
an inner member having a first distal end;
an outer member including a second distal end, the outer member slidably disposed over the inner member, the outer member comprising a pushing mechanism disposed at the second distal end, the pushing mechanism moveable between an expanded configuration and an unexpanded configuration, wherein the pushing mechanism in the expanded configuration is adapted to push an incremental length of the obesity device into the gastric lumen; and
an intragastric bag disposed over the outer member, the intragastric bag comprising a plurality of bundles formed by a plurality of retaining elements,wherein the pushing mechanism comprises a plurality of segments disposed about the second distal end of the outer member, the second distal end of the outer member being fixedly connected to the first distal end of the inner member, andwherein each of the plurality of segments in the expanded configuration span a lateral length greater than a diameter of each of the plurality of retaining elements.
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Abstract
A delivery system and method of use thereof for introducing a bundled intragastric bag into a gastric lumen are described. The delivery system includes a pushing mechanism movable between an unexpanded and expanded configuration. The pushing mechanism in its expanded configuration pushes each of the bundles of the bag into the gastric lumen. A suture strand is periodically pulled during the procedure to help create doughnut-shaped bundles. Another suture strand extends between a proximal button and distal button of the deployed assembly to maintain the doughnut-shaped bundle structure.
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Citations
21 Claims
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1. A delivery system for introducing an obesity device into a gastric lumen, comprising:
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an overtube including a proximal end and a distal end; an inner member having a first distal end; an outer member including a second distal end, the outer member slidably disposed over the inner member, the outer member comprising a pushing mechanism disposed at the second distal end, the pushing mechanism moveable between an expanded configuration and an unexpanded configuration, wherein the pushing mechanism in the expanded configuration is adapted to push an incremental length of the obesity device into the gastric lumen; and an intragastric bag disposed over the outer member, the intragastric bag comprising a plurality of bundles formed by a plurality of retaining elements, wherein the pushing mechanism comprises a plurality of segments disposed about the second distal end of the outer member, the second distal end of the outer member being fixedly connected to the first distal end of the inner member, and wherein each of the plurality of segments in the expanded configuration span a lateral length greater than a diameter of each of the plurality of retaining elements. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for introducing an intragastric bag into a gastric lumen, comprising the steps of:
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(a) providing a delivery system comprising; an overtube including a proximal end and a distal end; an inner member having a first distal end; an outer member including a second distal end, the outer member slidably disposed over the inner member, the outer member comprising a pushing mechanism disposed at the second distal end, the pushing mechanism moveable between a expanded configuration and an unexpanded configuration;
wherein the pushing mechanism in the expanded configuration spans a distance sufficient to push an incremental length of the bag into the gastric lumen;(b) partitioning the intragastric bag into a plurality of bundles with a plurality of retaining elements, the plurality of retaining elements being disposed circumferentially about the plurality of bundles, the plurality of retaining elements being spaced apart a predetermined distance from each other; (c) loading the intragastric bag over the outer member; (d) proximally pulling the outer member through a first retaining element from the plurality of retaining elements with the pushing mechanism being configured in the unexpanded configuration and positioned in the bag proximal and adjacent to the first retaining element; (e) expanding the pushing mechanism; (f) moving the outer member in a distal direction so as to push the first retaining element from the plurality of retaining elements and a first bundle of the plurality of bundles into the gastric lumen. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
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Specification