Tissue anchor for securing tissue layers
AssigneeBoston Scientific Scimed, Inc.
InventorsFiona Sander, Michael P. Allen, Mattew Yurek, Kenneth F. Binmoeller
Life of this patent
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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.
Claims21
(canceled)
A tissue anchor configured for positioning through penetrations in adjacent tissue layers, comprising:
- a body formed of a woven filament braid, the body having an elongated tubular configuration and a foreshortened configuration,
- wherein the proximal and distal ends of the body expand radially into one or more flange structures leaving a cylindrical saddle region therebetween in the foreshortened configuration,
- wherein the body defines an open passage along a central axis in the elongated tubular configuration and the foreshortened configuration,
- 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, and
- wherein, when deployed in the foreshortened configuration, the one or more flange structures of the proximal and distal ends of the body are configured to physically anchor the adjacent tissue layers together to form a flow path therebetween via the open passage.
A system for establishing flow between adjacent tissue layers, comprising:
- a delivery catheter, comprising a retractable sheath and a distal penetrating element configured to form an anastomosis through the adjacent tissue layers;
- and
- a stent configured for positioning through the anastomosis of the adjacent tissue layers, comprising a body formed of a woven filament braid, the body having an elongated tubular configuration and a foreshortened configuration,
- wherein the proximal and distal ends of the body expand radially into one or more flange structures leaving a cylindrical saddle region therebetween in the foreshortened configuration,
- wherein the sheath is configured to constraint the stent in its elongated tubular configuration when un-retracted relative to the stent and to release the stent when retracted relative to the stent to allow the one or more flange structures of the proximal and distal ends of the body to radially expand,
- wherein the body defines an open passage along a central axis in the elongated tubular configuration and the foreshortened configuration,
- 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, and
- wherein, when deployed in the foreshortened configuration, the one or more flange structures of the proximal and distal ends of the body are configured to physically anchor the adjacent tissue layers together to form a flow path therebetween via the open passage.
Dependencies are inferred from the claim text.