Endoprosthesis for hepaticogastrostomy use

An endoprosthesis having a first end and a second end, comprising:

• a body portion extending axially along a central longitudinal axis from the second end toward the first end;
• a first end portion extending axially along a central longitudinal axis from the first end toward the second end;
• and
• a flanged portion extending between the body portion and the first end portion;
• wherein the body portion, the first end portion, and the flanged portion are formed from a single wire extending from the first end to the second end;
• wherein the single wire forms:
• a first circumferential end segment extending circumferentially around the central longitudinal axis at the first end, wherein the first circumferential end segment is oriented generally perpendicular to the central longitudinal axis;
• a second circumferential end segment extending circumferentially around the central longitudinal axis at the second end, wherein the circumferential second end segment is oriented generally perpendicular to the central longitudinal axis;
• and
• a plurality of circumferential segments extending helically around the central longitudinal axis between the first circumferential end segment and the second circumferential end segment.

An endoprosthesis having a first end and a second end, comprising:

• a body portion extending axially along a central longitudinal axis from the first end to the second end;
• and
• a plurality of loops extending radially outward from the first end;
• wherein the body portion and the plurality of loops are formed from a single wire extending from the first end to the second end;
• wherein the single wire forms:
• a first circumferential end segment extending circumferentially around the central longitudinal axis at the first end, wherein the first circumferential end segment includes the plurality of loops and is oriented generally perpendicular to the central longitudinal axis;
• a second circumferential end segment extending circumferentially around the central longitudinal axis at the second end, wherein the second circumferential end segment is oriented generally perpendicular to the central longitudinal axis;
• and
• a plurality of circumferential segments extending helically around the central longitudinal axis between the first circumferential end segment and the second circumferential end segment.