Stent-graft system
AssigneeHangzhou Endonom Medtech Co., Ltd
InventorWayne W Zhang
Life of this patent
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Abstract
A stent-graft system (100) includes a mainbody stent-graft (1), an outer branch (2), and at least one inner branch (3, 4). The mainbody stent-graft (1) is a tubular structure with covering membrane (102) on a surface thereof, forming a radially recessed concave portion (103) thereon. The outer branch (2) extends outside the mainbody stent-graft (1), with one end attached to a side wall of the concave portion (103). The inner branch (3, 4) is attached to the inside wall of the mainbody stent-graft (1), with an outer opening (31, 41) on the side wall of the concave portion (103), wherein the outer opening (31, 41) is distal to the inner opening (21).
Claims18
A stent-graft system, comprising:
- a mainbody stent-graft being of a tubular structure with a covering membrane on a surface thereof, and forming a radially recessed concave portion thereon;
- an outer branch extending outside the mainbody stent-graft, having one end connected to a side wall of the concave portion with an inner opening on the side wall of the concave portion;
- and
- at least one inner branch, attached to an inside wall of the mainbody stent-graft, each of the at least one inner branch having one end connected to the side wall of the concave portion with an outer opening on the side wall of the concave portion,
- wherein the outer branch has a flexible section which extends outwards from the inner opening;
- and
- wherein a length of the flexible section is 2 mm to 10 mm, without exceeding ½ of a total length of the outer branch.
Dependencies are inferred from the claim text.