Covered endoprosthesis with improved branch access
AssigneeBoston Scientific Scimed, Inc.
InventorMartyn G. Folan
Life of this patent
Estimating the term…
Abstract
An endoprosthesis may include an expandable framework including an anchoring portion and a body portion extending axially from the anchoring portion, the body portion having a plurality of body cells; and a polymeric cover disposed on at least a portion of the expandable framework. The anchoring portion includes a first transverse flange and a second transverse flange proximate the first transverse flange, the first and second transverse flanges being configured to secure the anchoring portion at an orifice of a body lumen. The body portion includes a window through a side of the body portion, the window occupying space equivalent to at least two of the plurality of body cells. The window is devoid of the polymeric cover and any other structure within a perimeter of the window.
Claims19
An endoprosthesis, comprising:
- an expandable framework including an anchoring portion and a body portion extending axially from the anchoring portion, wherein the body portion includes a plurality of body filaments interwoven around a central longitudinal axis of the expandable framework to define a plurality of body cells;
- and
- a polymeric cover disposed on at least a portion of the expandable framework;
- wherein the anchoring portion includes a first transverse flange disposed at a proximal end of the expandable framework and a second transverse flange disposed proximate the first transverse flange, the second transverse flange located distal of the first transverse flange, the first and the second transverse flanges being configured to secure the anchoring portion within an orifice of a body lumen;
- wherein the body portion extends distally from the second transverse flange toward a distal end of the expandable framework, the body portion including a window through a side of the body portion distal of the second transverse flange, the window occupying space equivalent to at least two of the plurality of body cells;
- wherein the window is formed by removing at least a portion of the plurality of body filaments leaving ends of the plurality of body filaments at a perimeter of the window;
- wherein the perimeter of the window is at least partially defined by a plurality of welds joining the ends of the plurality of body filaments together along the perimeter;
- wherein the window is devoid of the polymeric cover and any other structure within the perimeter of the window.
An endoprosthesis comprising:
- an expandable framework formed of a plurality of interwoven filaments, the expandable framework including an anchoring portion at a first end of the expandable framework, and a body portion extending axially from the anchoring portion to a second end of the expandable framework, the body portion defining a first outer diameter and having a plurality of body cells;
- and
- a polymeric cover disposed on at least a portion of the expandable framework;
- wherein the anchoring portion includes a first transverse flange and a second transverse flange proximate the first transverse flange, the first and the second transverse flanges each have a second outer diameter larger than the first diameter and being configured to secure the anchoring portion within a body lumen;
- wherein the body portion includes a window through a side of the body portion, the window occupying space equivalent to at least two of the plurality of body cells;
- and
- wherein the window is devoid of the polymeric cover and any other structure within a perimeter of the window.
An endoprosthesis comprising:
- an expandable framework including an anchoring portion, a body portion having a plurality of body cells, and a linking portion extending axially from the anchoring portion to the body portion;
- and
- a polymeric cover disposed on at least a portion of the expandable framework;
- wherein the linking portion includes a plurality of longitudinally-oriented struts spacing the body portion from the anchoring portion, the linking portion being devoid of the polymeric cover;
- and
- wherein the expandable framework further includes a tapered flange extending axially between the anchoring portion and the body portion and extending radially outward from the linking portion.
Dependencies are inferred from the claim text.