TISSUE ANCHOR FOR SECURING TISSUE LAYERS
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Accused Products
Abstract
Tissue anchors comprise a woven filament braid body having an elongated tubular configuration and a foreshortened configuration where proximal and distal ends of the body expand radially into double-walled flange structures while leaving a cylindrical saddle region therebetween. The tissue anchors are deployed through penetrations between adjacent tissue layers, where the flanges engage the outer surfaces of the tissue layers and the saddle region resides within the tissue penetrations.
15 Citations
21 Claims
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1. (canceled)
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2. A medical device for placement across aligned penetrations in adjacent tissue of a first luminal region of a body and a second region of the body to form a flow path therebetween, comprising:
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an anchor comprising a woven filament braid with a central lumen having a first length in a radially constrained configuration, the anchor transitionable between the radially constrained configuration and a preformed configuration, the preformed configuration comprising a middle segment of the central lumen having a second length and a proximal end and a distal end of the central lumen flaring radially outward to form flanges, and wherein, in the preformed configuration, the second length of the middle segment is equal to or less than 40% of the first length of the central lumen in the radially constrained configuration. - View Dependent Claims (3, 4, 5, 6, 7, 8)
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9. A medical device configured for positioning through penetrations in adjacent tissue layers and forming a flow path therebetween, comprising
a body formed of a woven filament braid, the body having an elongated tubular configuration and a foreshortened configuration, wherein proximal and distal ends of the body expand radially in the foreshortened configuration into flared flange structures leaving a cylindrical saddle region therebetween, wherein the body defines an open passage along a central axis in the elongated tubular configuration and the foreshortened configuration, and a membrane over at least a portion of the body; wherein, in the foreshortened configuration, the length of the body is at least 40% shorter than the length of the body in the elongated tubular configuration. - View Dependent Claims (10, 11, 12, 13)
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14. A method for forming a flow path between a first luminal region of a body and a second region of the body comprising:
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forming aligned penetrations in adjacent tissue of the first and second regions; advancing an elongated tube in a radially constrained configuration through the aligned penetrations, the elongated tube comprising a central lumen having a first length, transitioning the elongated tube from the radially constrained configuration into a preformed configuration comprising; a middle segment of the central lumen having a second length; and a proximal and a distal end of the central lumen extending radially outward to form flared flanges, wherein the flared flanges press against the adjacent tissue of the first and second regions and the middle segment spans the aligned penetrations, and wherein the second length of the middle segment is equal to or less than 40% of the first length of the radially constrained central lumen. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
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Specification