US2004098119A1PendingUtilityA1

Stent with smooth ends

Assignee: SCIMED LIFE SYSTEMS INCPriority: May 5, 1998Filed: Sep 29, 2003Published: May 20, 2004

Est. expiryMay 5, 2018(expired)· nominal 20-yr term from priority

A61F 2/82A61F 2/88A61F 2/90A61F 2/91A61F 2/915A61F 2/92A61F 2002/91541A61F 2002/91558A61F 2250/0018A61K 9/0024A61L 31/10A61L 31/16A61L 2300/25A61L 2300/416A61L 2300/606A61L 2300/608A61L 2420/08A61F 2220/005

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References

Claims

Abstract

A stent having at least one smooth end is disclosed. The stent may include a coating or coatings on one or both end portions to provide a smooth finish to reduce possible damage to body passages when the stent is deployed and delivered. The stent may also contain drugs or surgical adhesives or a combination thereof in or on the coated portion of the stent. The stent may also be of the type where the materials of the stent may be treated to have a smooth flexible end or ends. The stent may also be of a configuration such that at least one end is more flexible than the middle portion of the stent.

Claims

exact text as granted — not AI-modified

What is claimed is:  
     
         1 . An expandable intraluminal stent comprising a main body portion having a first end portion, a second end portion, a middle portion and a flow passage defined therethrough, at least a portion of the first end portion having a biocompatible coating.  
     
     
         2 . The stent of  claim 1  wherein the coating comprises a biocompatible polymer.  
     
     
         3 . The stent of  claim 1  wherein the coating comprises a biodegradable polymer.  
     
     
         4 . The stent of  claim 1  wherein the first end portion comprises an inner surface, an outer surface, an end and an edge, the coating covering the end and at least a portion of the edge of the first end portion.  
     
     
         5 . The stent of  claim 1  wherein at least a portion of the second end portion has a biocompatible coating.  
     
     
         6 . The stent of  claim 5  wherein the second end portion comprises an outer surface, an inner surface, an end, and an edge, the coating covering the end and at least a portion of the edge of the second end portion.  
     
     
         7 . The stent of  claim 5  wherein the coating comprises a biocompatible polymer.  
     
     
         8 . The stent of  claim 1  wherein the coating includes a drug.  
     
     
         9 . The stent of  claim 8  wherein the drug comprises TAXOL.  
     
     
         10 . The stent of  claim 1  wherein the coating includes a bioadhesive.  
     
     
         11 . The stent of  claim 1  wherein the coating comprises a plurality of layers.  
     
     
         12 . The stent of  claim 11  wherein the plurality of layers is comprised of the same coating material.  
     
     
         13 . The stent of  claim 11  wherein the plurality of layers is comprised of different coating materials.  
     
     
         14 . The stent of  claim 12  wherein at least one of the layers includes a drug.  
     
     
         15 . The stent of  claim 5  wherein the coating comprises a plurality of layers.  
     
     
         16 . The stent of  claim 15  wherein the plurality of layers is comprised of the same coating material.  
     
     
         17 . The stent of  claim 15  wherein the plurality of layers is comprised of different materials.  
     
     
         18 . The stent of  claim 15  wherein at least one of the layers includes a drug.  
     
     
         19 . An expandable intraluminal stent comprising a main body portion having a first end portion, a second end portion, a middle portion and a flow passage defined therethrough, and a sleeve of biocompatible material connected to the first end portion.  
     
     
         20 . The stent of  claim 19  wherein the sleeve comprises a biocompatible polymer.  
     
     
         21 . The stent of  claim 19  wherein the coating comprises a biodegradable polymer.  
     
     
         22 . The stent of  claim 19  wherein the sleeve includes apertures.  
     
     
         23 . The stent of  claim 19  wherein the sleeve includes a drug.  
     
     
         24 . The stent of  claim 23  wherein the drug comprises TAXOL.  
     
     
         25 . The stent of  claim 19  wherein the sleeve comprises a plurality of layers.  
     
     
         26 . The stent of  claim 25  wherein the plurality of layers is comprised of the same coating material.  
     
     
         27 . The stent of  claim 25  wherein the plurality of layers is comprised of different materials.  
     
     
         28 . The stent of  claim 25  wherein at least one of the layers includes a drug.  
     
     
         29 . The stent of  claim 19  further comprising a second sleeve connected to the second end portion.  
     
     
         30 . The stent of  claim 29  wherein the sleeve comprises a biocompatible polymer.  
     
     
         31 . The stent of  claim 29  wherein the sleeve includes apertures.  
     
     
         32 . The stent of  claim 29  wherein the sleeve includes a drug.  
     
     
         33 . The stent of  claim 29  wherein the sleeve comprises a plurality of layers.  
     
     
         34 . The stent of  claim 33  wherein the plurality of layers is comprised of the same coating material.  
     
     
         35 . The stent of  claim 33  wherein the plurality of layers is comprised of different materials.  
     
     
         36 . The stent of  claim 33  wherein at least one of the layers includes a drug.  
     
     
         37 . An expandable intraluminal stent comprising a main body portion having a first end portion, a second end portion, a middle portion and a flow passage defined therethrough, the first end portion being polished to provide a smooth first end portion.  
     
     
         38 . The stent of  claim 37  further comprising a polished second end portion to provide a smooth second end portion.  
     
     
         39 . An expandable intraluminal stent comprising a main body portion having a first end portion, a second end portion, a middle portion and a flow passage defined therethrough, the first end portion being heat treated to provide flexibility.  
     
     
         40 . The stent of  claim 39  further comprising a heat treated second end portion to provide flexibility.  
     
     
         41 . An expandable intraluminal stent comprising a main body portion having a first end portion, a second end portion, a middle portion and a flow passage defined therethrough, the first end portion constructed in a manner so as to be more flexible than the middle portion.  
     
     
         42 . The stent of  claim 41  wherein the stent comprises a looser mesh first end portion than the middle portion.  
     
     
         43 . The stent of  claim 41  further comprising the second end portion constructed in a manner so as to be more flexible than the middle portion.  
     
     
         44 . The stent of  claim 43  wherein the stent comprises a looser mesh second end portion than the middle portion.  
     
     
         45 . The stent of  claim 1  wherein the coating comprises an RGD peptide-containing compound.  
     
     
         46 . The stent of  claim 8  wherein the drug comprises 5-flroracil.  
     
     
         47 . The stent of  claim 8  wherein the drug comprises Tranilast.  
     
     
         48 . The stent of  claim 8  wherein the drug comprises Tropidil.  
     
     
         49 . The stent of  claim 8  wehrien the drug comprises Probucol.

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