Apparatus and methods for forming gastrointestinal tissue approximations
First Claim
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1. Apparatus for forming a tissue fold in a tissue wall of a gastrointestinal lumen, comprising:
- a catheter having a proximal region and a distal region;
a second flexible tube at the distal region;
a tissue grabbing assembly on the second flexible tube;
a first flexible tube supported by the catheter;
an anchor delivery system in the first flexible tube including a hollow needle for delivering an anchor assembly across a tissue fold; and
a pivot link having a second end pivotally attached to the second flexible tube adjacent to the tissue grabbing assembly, and the pivot link having a first end pivotally attached to the first tube.
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Abstract
Apparatus and methods are provided for forming a gastrointestinal tissue fold by engaging tissue at a first tissue contact point, moving the first tissue contact point from a position initially distal to a second tissue contact point to a position proximal of the second contact point to form a tissue fold, and extending an anchor assembly through the tissue fold near the second tissue contact point.
404 Citations
15 Claims
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1. Apparatus for forming a tissue fold in a tissue wall of a gastrointestinal lumen, comprising:
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a catheter having a proximal region and a distal region; a second flexible tube at the distal region; a tissue grabbing assembly on the second flexible tube; a first flexible tube supported by the catheter; an anchor delivery system in the first flexible tube including a hollow needle for delivering an anchor assembly across a tissue fold; and a pivot link having a second end pivotally attached to the second flexible tube adjacent to the tissue grabbing assembly, and the pivot link having a first end pivotally attached to the first tube. - View Dependent Claims (2, 3, 4, 5, 6)
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7. Apparatus for forming a tissue fold in a tissue wall of a gastrointestinal lumen, comprising:
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a catheter having a proximal region and a distal region; a second flexible tube at the distal region; a tissue grabbing assembly on the second flexible tube a first flexible tube supported by the catheter; an anchor delivery system in the first flexible tube comprising an anchor assembly disposed on or within a needle, and a pivot link having a second end pivotally attached to the second flexible tube adjacent to the tissue grabbing assembly, and the pivot link having a first end pivotally attached to the first tube. - View Dependent Claims (8)
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9. Apparatus comprising:
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a catheter; a first tube attached to the catheter and having a bendable distal section; a hollow needle within the first tube, with the hollow needle having a piercing tip; a push rod within the hollow needle; at least two anchor assemblies within the hollow needle, between the push rod and the piercing tip; a second tube extendable through the catheter and having a bendable distal section; a tissue grabber on the second tube; and a link having a first end pivotally attached to the first tube and having a second end pivotally attached to the second tube, with the link limiting movement of the tissue grabber relative to the first tube. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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Specification