US 12,636,171 B2 · Fenestrated duodenal stent

Abstract

A fenestrated duodenal stent includes a stent body enclosed by a meshed sidewall. The stent body is open at two ends and hollow inside. The stent body includes a proximal support segment, a distal support segment, and an opening segment connected between the proximal and distal support segments. The proximal support segment is divided into a front section, a middle section and a rear section that are connected sequentially and coaxially. The front section is of an umbrella shape, and an opening of the umbrella shape faces the middle section. The middle section is of a cylindrical shape, and a diameter of the cylindrical shape is less than a diameter of the opening segment. The rear section is spherical or hemispherical, and a maximum diameter of the rear section is greater than the diameter of the opening segment but not greater than a maximum diameter of the umbrella shape.

Claims9

Dependent claims

A fenestrated duodenal stent, comprising a stent body enclosed by a meshed sidewall, wherein the stent body is open at two ends and hollow inside;

the stent body comprises a proximal support segment, a distal support segment, and an opening segment connected between the proximal support segment and the distal support segment;
a membrane covers a surface of the stent body, and an uncovered window for allowing a liquid to pass through and flow to a port of the proximal support segment via a hollow region in the stent body is formed in a local region of a sidewall of the opening segment;
and
wherein the distal support segment is of a spherical shape or a hemispherical shape, and a maximum diameter of the distal support segment is greater than a diameter of the opening segment but less than or equal to a maximum diameter of a rear section of the proximal support segment.

1 more element

Dependencies are inferred from the claim text.

Fenestrated duodenal stent

Life of this patent

Fenestrated duodenal stent

Life of this patent

Abstract

Claims9