Composite stent with inner and outer stent elements and method of using the same
AssigneeBoston Scientific Scimed, Inc.
InventorsPeter J. Shank, Sheng-Ping Zhong, Kinh-Luan D. Dao, F. Anthony Headley, Jr.
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Abstract
An endoprosthesis comprising a stent, a cover fully covering the stent wherein the cover has variable porosity in the radial direction; and an adhesion layer connecting the stent to the cover. Another aspect of the invention is a method of implanting an endoprosthesis which includes a stent, providing a cover with variable porosity in the radial direction, connecting the stent to the cover with an adhesion layer to form a covered stent, and implanting the covered stent within a body lumen of a patient.
Claims18
A method of forming an implantable composite stent, the method comprising:
- depositing a liquid adhesive material onto an outer surface of a self-expandable mesh stent as the self-expandable mesh stent is being rotated;
- depositing cover material onto the adhesive material to form a covered stent, wherein the self-expandable mesh stent is rotating as the cover material is being applied;
- connecting a bioabsorbable mesh stent to an outer surface of the covered stent to form the composite stent, wherein the self-expandable stent forms an inner layer of the composite stent and the bioabsorbable mesh stent forms the outer layer of the composite stent;
- and
- attaching a retrieval loop element to the self-expandable stent, wherein a portion of the retrieval loop element is positioned between the cover material and the self-expandable stent after the cover material is applied to the self-expandable stent.
Dependencies are inferred from the claim text.