Medical devices for use along the biliary and/or pancreatic tract
Medical devices and method for making and using the same are disclosed. An example medical device may include implantable medical device for use along the biliary and/or pancreatic tract. The implantable medical device may include a tubular member having a first end configured to be disposed within the duodenum of a patient and a second end configured to be disposed adjacent to a pancreatic duct and/or bile duct. The tubular member may have a body including one or more wire filaments that are woven together. The tubular member may also have an outer surface with a longitudinal channel formed therein.
1. An implantable stent comprising:
a tubular member formed of a plurality of interwoven wire filaments, the tubular member having a longitudinal length extending from a first end of the tubular member to a second end of the tubular member;
wherein the tubular member has a circumferential outer surface, a circumferential inner surface, and a central longitudinal axis extending through the tubular member;
wherein the tubular member includes a plurality of longitudinal channels extending parallel to the central longitudinal axis, the plurality of longitudinal channels each extending only partially along the longitudinal length of the tubular member;
wherein the plurality of interwoven wire filaments are displaced radially inward from the circumferential outer surface to form the plurality of longitudinal channels.
2. The implantable stent of claim 1 , wherein the tubular member includes a generally cylindrical body and a flared end region flared radially outward from the generally cylindrical body at the first end of the tubular member, wherein each of the plurality of longitudinal channels extends only partially along the generally cylindrical body but does not extend along the flared end region.
3. The implantable stent of claim 2 , wherein the generally cylindrical body extends to the second end of the tubular member.
4. The implantable stent of claim 1 , wherein the plurality of interwoven wire filaments are displaced radially inward from the circumferential inner surface to form the plurality of longitudinal channels.
5. The implantable stent of claim 1 , wherein each of the plurality of longitudinal channels defines a longitudinal ridge formed in the circumferential inner surface by displacement of the plurality of interwoven wire filaments radially inward.
6. The implantable stent of claim 1 , further comprising a covering disposed on the circumferential outer surface of the tubular member.
7. The implantable stent of claim 6 , wherein the covering is a polymeric sleeve attached to the plurality of interwoven wire filaments.
8. The implantable stent of claim 7 , wherein the covering includes a plurality of openings formed through the polymeric sleeve and aligned with the plurality of longitudinal channels.
9. The implantable stent of claim 1 , wherein the plurality of interwoven wire filaments are formed of a shape-memory material.
10. The implantable stent of claim 1 , wherein the plurality of interwoven wire filaments are formed of a nickel-titanium alloy.
11. An implantable stent comprising:
a braided tubular member having a first end and a second end, the braided tubular member including:
a generally cylindrical body having a central longitudinal axis, a circumferential outer surface and a circumferential inner surface, the generally cylindrical body having a longitudinal length extending from the first end to the second end of the braided tubular member;
wherein the braided tubular member is formed of a plurality of braided wire filaments extending from the first end of the cylindrical body to the second end of the cylindrical body;
wherein the generally cylindrical body includes a plurality of longitudinal channels extending parallel to the central longitudinal axis and spaced circumferentially around the generally cylindrical body, the plurality of longitudinal channels formed by displacing the plurality of braided wire filaments radially inward from the circumferential outer surface;
wherein each of the plurality of longitudinal channels extends only partially along the longitudinal length of the braided tubular member; and
a covering disposed about the braided tubular member.
12. The implantable stent of claim 11 , wherein the covering is a silicone coating disposed on the plurality of braided wire filaments.
13. The implantable stent of claim 11 , wherein the covering is a polymeric sleeve attached to the plurality of braided wire filaments.
14. The implantable stent of claim 13 , wherein the polymeric sleeve includes a plurality of openings formed through the polymeric sleeve and aligned with the plurality of longitudinal channels.
15. The implantable stent of claim 11 , wherein the plurality of braided wire filaments are formed of a shape-memory material.
16. The implantable stent of claim 11 , wherein the plurality of braided wire filaments are formed of a nickel-titanium alloy.
17. The implantable stent of claim 11 , wherein each of the plurality of longitudinal channels defines a longitudinal ridge formed in the circumferential inner surface by displacement of the plurality of braided wire filaments radially inward.
18. An implantable stent comprising:
a braided tubular member having a first end and a second end, the braided tubular member including:
a generally cylindrical body having a circumferential outer surface and a circumferential inner surface, the generally cylindrical body having a longitudinal length extending from the first end to the second end of the braided tubular member;
wherein the braided tubular member is formed of a plurality of braided wire filaments extending from the first end of the cylindrical body to the second end of the cylindrical body;
wherein the generally cylindrical body includes a plurality of longitudinal channels spaced circumferentially around the generally cylindrical body, the plurality of longitudinal channels formed by displacing the plurality of braided wire filaments radially inward from the circumferential outer surface;
wherein each of the plurality of longitudinal channels extends only partially along the longitudinal length of the braided tubular member; and
a covering disposed about the braided tubular member;
wherein the braided tubular member includes a flared end region flared radially outward from the generally cylindrical body at the first end of the braided tubular member, wherein each of the plurality of longitudinal channels extends only partially along the generally cylindrical body but does not extend along the flared end region.