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US 12,544,072 B2Granted
Tissue anchor for securing tissue layers
AssigneeBoston Scientific Scimed, Inc.
InventorsFiona M. Sander, Michael P. Allen, Mattew Yurek, Kenneth F. Binmoeller
Life of this patent
Estimating the term…
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.
Claims15
A medical device, comprising:
- a body formed of a filament braid, the body having an unconstrained configuration and a constrained configuration, the body having a first end, a second end, and a central region extending therebetween, wherein, in the unconstrained configuration, the first end radially expands into a flange structure and the central region expands into a saddle region, establishing a fluid flow path therethrough, wherein a length of the body in the unconstrained configuration is at least 70% less than a length of the body in the constrained configuration, wherein the flange structure includes an atraumatic tissue apposing surface adjacent to the saddle region, and wherein the atraumatic tissue apposing surface comprises a double-ringed flange structure having a pair of adjacent annular rings that face each other,
- wherein the saddle region is extensible to reduce trauma from the flange tissue apposing surface, and
- wherein the flange structure has an open end at least as great as a diameter of the saddle region.
A drainage stent, comprising:
- a body formed of a filament braid, the body having an unconstrained configuration and a constrained configuration, the body having a first end, a second end, and a central region configured therebetween, and the body in the unconstrained configuration configured to form a fluid drainage path;
- wherein, in the unconstrained configuration, the first end radially expands into a flange structure and the central region expands into a saddle region;
- wherein the flange structure has a diameter that is at least substantially 1.5 times the diameter of the saddle region;
- wherein the flange structure includes an atraumatic tissue apposing surface adjacent to the saddle region, and wherein the atraumatic tissue apposing surface comprises a double-ringed flange structure having a pair of adjacent annular rings that face each other,
- wherein the saddle region is extensible to reduce trauma from the flange tissue apposing surface, wherein the flange structure has an open end at least as great as the diameter of the saddle region, and
- wherein a length of the body in the unconstrained configuration is at least 70% less than a length of the body in the constrained configuration.
3 more elements
A drainage stent, comprising:
- a body formed of a filament braid, the body having an unconstrained configuration and a constrained configuration, the body having a first end, a second end, and a central region configured therebetween, and the body in the unconstrained configuration configured to form a drainage path therethrough;
- wherein, in the unconstrained configuration, the first end radially expands into a flanged retention structure, the second end radially expands into a retention region, and the central region expands into a saddle region extending therebetween;
- wherein the flanged retention structure has a diameter that is at least substantially 1.5 times the diameter of the saddle region;
- wherein the flanged retention structure includes an atraumatic tissue apposing surface adjacent to the saddle region, and wherein the atraumatic tissue apposing surface comprises a double-ringed flange structure having a pair of adjacent annular rings that face each other,
- wherein the saddle region is extensible to reduce trauma from the flange tissue apposing surface, wherein the flanged retention structure has an open end at least as great as the diameter of the saddle region, and
- wherein a length of the body in the unconstrained configuration is at least 70% less than a length of the body in the constrained configuration.
3 more elements
Dependencies are inferred from the claim text.