Composite stent with inner and outer stent elements and method of using the same
First Claim
1. A composite stent comprising:
- an outer element open at opposite ends and having an outer surface engageable with an inner surface of a body lumen; and
an inner element open at opposite ends, said inner element engageable with said outer element to form a composite structure insertable within the body lumen, said inner element configured to assist said outer element in retaining a position of the outer element within the body lumen.
1 Assignment
0 Petitions
Accused Products
Abstract
A composite stent structure includes separate and distinct stent elements or members: an outer stent element and an inner stent element removably attached to the outer stent element. The outer element may be, for example, a bioabsorbable stent typically constructed of a relatively non-resilient material such that the outer bioabsorbable stent element may not be self-expanding and subject to migration within the lumen over time. In contrast, the inner element may be, for example, a removable SEMS used to urge and maintain the outer element in position in the body lumen. The temporary inner SEMS may retain the composite structure (including the underlying inner element) in position until such time as the outer element is appropriately incorporated into the surrounding tissue or some other criteria occurs such that the removal of the SEMS is indicated. The SEMS may then be detached from the outer element and removed from the body lumen.
108 Citations
27 Claims
-
1. A composite stent comprising:
-
an outer element open at opposite ends and having an outer surface engageable with an inner surface of a body lumen; and
an inner element open at opposite ends, said inner element engageable with said outer element to form a composite structure insertable within the body lumen, said inner element configured to assist said outer element in retaining a position of the outer element within the body lumen. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
-
-
23. A composite stent comprising:
-
a bioabsorbable stent element; and
a self-expanding metal stent element releasably engageable within said bioabsorbable stent element for insertion within the body lumen as a unit, said bioabsorbable stent element biased to position said outer element into engagement with the body lumen. - View Dependent Claims (24)
-
-
25. A method of treatment comprising the steps of:
-
inserting a composite stent structure into a body lumen, said composite stent structure including an inner element attached to an outer element;
expanding said inner element to cause said outer element to be positioned into contact with an inner wall of the body lumen; and
allowing for normal functioning of the body lumen by transporting a bodily substance through said composite stent structure. - View Dependent Claims (26, 27)
-
Specification