Colorectal stents
AssigneeCovidien LP
InventorAmarsinh Deeliprao Jadhav
Life of this patent
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Abstract
A stent for use in colorectal surgery is expandable and includes an inner surface having a layer thereon to prevent fecal matter from being trapped in the cells/openings of the stent. In embodiments, the stent is placed within the colon at the site of an anastomosis. The layer on the inner surface of the stent also prevents leakage at the site of an anastomosis. In embodiments, the stent is self-expanding, and expands radially to engage an inner wall of a lumen, in embodiments the colon. In other embodiments, the stent is expanded by a balloon to engage the inner wall of a lumen, in embodiments the colon. Methods for using stents of the present disclosure are also provided.
Claims18
A stent comprising:
- a tubular member having a proximal portion and a distal portion and defining a longitudinal axis and a lumen extending between the proximal portion and the distal portion of the tubular member, the tubular member including an outer surface and an inner surface;
- and
- a layer along the inner surface of the tubular member, the layer having ends which extend from the lumen of the tubular member, the ends of the layer being affixed to the outer surface of the tubular member thereby forming cuffs at the proximal portion and the distal portion of the tubular member,
- the stent and the layer both being formed of a material which permits expansion of the stent in a patient's body.
A method comprising:
- introducing an impermeable stent defining a stent lumen into a lumen of a body vessel in a compressed configuration;
- positioning the impermeable stent at a site of an anastomosis such that the stent extends across the site of the anastomosis;
- and
- radially expanding the impermeable stent to an enlarged circumference, thereby placing the outer surface of the impermeable stent in contact with an inner wall of the body vessel across the site of the anastomosis, thereby anchoring the impermeable stent within the body vessel.
Dependencies are inferred from the claim text.