US2021137712A1PendingUtilityA1

Stent assembly and methods for treatment via body lumens

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Assignee: INSPIREMD LTDPriority: May 24, 2005Filed: Dec 28, 2020Published: May 13, 2021
Est. expiryMay 24, 2025(expired)· nominal 20-yr term from priority
Inventors:Eli BarZeev Asher HolzerOfir Paz
A61F 2/07A61F 2220/005A61F 2002/075A61F 2/92A61F 2230/0054A61F 2/90A61F 2250/0023A61F 2250/0039A61F 2230/0067A61L 2300/20A61L 31/10A61F 2/958A61F 2002/077A61F 2/89
67
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Claims

Abstract

An enhanced stent apparatus includes an implantable element, constructed of a flexible, biocompatible material configured to be positioned in a body lumen. An inner structure is located on an inner surface of said implantable element, wherein the inner structure is made of metal, has a coverage area of less than 30% and is provided with apertures. An outer structure is located on an outer surface of said implantable element, wherein the outer structure is made of metal, has a coverage area of less than 30% and is provided with apertures.

Claims

exact text as granted — not AI-modified
1 . An enhanced stent apparatus, comprising:
 an implantable element, constructed of a flexible, biocompatible material configured to be positioned in a body lumen;   an inner structure located on an inner surface of said implantable element, and wherein the inner structure is made of metal, has a coverage area of less than 30% and is provided with apertures; and   an outer structure located on an outer surface of said implantable element, and wherein the outer structure is made of metal, has a coverage area of less than 30% and is provided with apertures.   
     
     
         2 . An enhanced stent apparatus according to  claim 1 , wherein the implantable element comprises a support element. 
     
     
         3 . An enhanced stent apparatus according to  claim 1 , wherein the implantable element is constructed of a metal. 
     
     
         4 . An enhanced stent apparatus according to  claim 1 , wherein the implantable element is constructed of a polymer. 
     
     
         5 . An enhanced stent apparatus according to  claim 4 , wherein the implantable element is constructed of a biostable polymer. 
     
     
         6 . An enhanced stent apparatus according to  claim 4 , wherein the implantable element is constructed of a bioresorbable polymer. 
     
     
         7 . An enhanced stent apparatus according to  claim 1 , wherein said apertures have an average diameter of less than 200 microns. 
     
     
         8 . An enhanced stent apparatus according to  claim 1 , wherein the outer structure has a thickness of less than 100 microns. 
     
     
         9 . An enhanced stent apparatus according to  claim 1 , wherein the inner structure has a thickness of less than 20 microns. 
     
     
         10 . An enhanced stent apparatus according to  claim 1 , wherein the outer structure is adapted to elute a pharmacological agent therefrom. 
     
     
         11 . An enhanced stent apparatus according to  claim 1 , wherein the outer structure consists essentially of a single metal wire. 
     
     
         12 . An enhanced stent apparatus according to  claim 1 , wherein the inner structure comprises a knitted fine metal wire. 
     
     
         13 . An enhanced stent apparatus according to  claim 1 , wherein at least one of said implantable element, said inner structure and said outer structure are expandable. 
     
     
         14 . An enhanced stent apparatus according to  claim 13 , wherein at least one of said implantable element, said inner structure and said outer structure are self-expandable. 
     
     
         15 . An enhanced stent apparatus according to  claim 1 , wherein said inner structure is knitted. 
     
     
         16 . An enhanced stent apparatus according to  claim 1 , wherein said inner structure is woven. 
     
     
         17 . An enhanced stent apparatus according to  claim 1 , wherein said inner structure is braided. 
     
     
         18 . An enhanced stent apparatus according to  claim 1 , wherein said outer structure is interlaced. 
     
     
         19 . An enhanced stent apparatus according to  claim 1 , wherein the outer structure is welded to the implantable element. 
     
     
         20 . An enhanced stent apparatus according to  claim 1 , wherein the inner structure is comprised of at least one fiber under 30 microns in diameter. 
     
     
         21 . An enhanced stent apparatus according to  claim 1 , wherein the outer structure is comprised of at least one fiber under 30 microns in diameter. 
     
     
         22 . An enhanced stent apparatus according to  claim 19 , wherein said outer structure is comprised of at least one fiber under 20 microns in diameter and has a coverage area of less than 20%. 
     
     
         23 . An enhanced stent apparatus according to  claim 1 , wherein the inner structure and the outer structure are porous structures. 
     
     
         24 . An enhanced stent apparatus, comprising:
 a support element, wherein said support element is constructed to be positioned in a body lumen; and   a porous structure, said porous structure located on a surface of said support element, and wherein the porous structure is comprised of at least one fiber under 30 microns in diameter, has a coverage area of less than 30% and is provided with apertures,   wherein an end of the porous structure is folded over an end of the support element.   
     
     
         25 . An enhanced stent apparatus according to  claim 24 , wherein the folded end of the porous structure is heat treated to make the fold permanent. 
     
     
         26 . An enhanced stent apparatus according to  claim 24 , wherein the porous structure is glued to the support element. 
     
     
         27 . An enhanced stent apparatus according to  claim 26 , wherein the outer porous structure is glued to the implantable element, by a polymer used for elution of a drug from the stent apparatus. 
     
     
         28 . An enhanced stent apparatus according to  claim 24 , wherein the porous structure consists essentially of a single metal wire. 
     
     
         29 . An enhanced stent apparatus according to  claim 28 , wherein said porous structure is knitted. 
     
     
         30 . An enhanced stent apparatus, comprising:
 a support element, wherein said support element is constructed to be positioned in a body lumen; and   a porous structure, said porous structure located on a surface of said support element, and wherein the porous structure is comprised of at least one fiber under 30 microns in diameter, has a coverage area of less than 30% and is provided with apertures,   wherein the porous structure is glued to the support element.   
     
     
         31 . An enhanced stent apparatus according to  claim 30 , wherein the porous structure is glued to the support element, by a polymer used for elution of a drug from the stent apparatus. 
     
     
         32 . An enhanced stent apparatus according to  claim 30 , wherein said porous structure is knitted.

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