US2013268062A1PendingUtilityA1

Composite prosthetic devices

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Assignee: ZEUS IND PRODUCTS INCPriority: Apr 5, 2012Filed: Mar 14, 2013Published: Oct 10, 2013
Est. expiryApr 5, 2032(~5.7 yrs left)· nominal 20-yr term from priority
Inventors:Sabrina D. PuckettJoshua L. ManascoRobert L. BallardBruce L. Anneaux
D01D 5/003A61L 2400/12D04H 1/728D01F 6/12A61F 2/07A61L 31/146A61L 2420/08D01D 10/02A61L 31/10A61F 2/86A61F 2002/0086A61F 2002/072A61F 2/0077D10B 2321/042A61F 2/06D10B 2509/06
56
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Claims

Abstract

The present disclosure provides composite prosthetic devices comprising two or more layers of electrospun polymers and methods of preparation thereof. In some embodiments, the two or more layers can be porous and in other embodiments, one or more components is nonporous. The composite prosthetic devices can comprise various materials and the properties of the prosthetic devices can be tailored for use in a range of different applications.

Claims

exact text as granted — not AI-modified
1 . A multi-layered tubular composite prosthetic device comprising at least one porous layer comprising electrospun poly(tetrafluoroethylene) and at least one porous layer comprising a second electrospun polymer. 
     
     
         2 . The composite prosthetic device of  claim 1 , wherein the second electrospun polymer comprises a solution-electrospun polymer. 
     
     
         3 . The composite prosthetic device of  claim 1 , wherein the second electrospun polymer comprises a thermoplastic polymer or a thermoset polymer. 
     
     
         4 . The composite prosthetic device of  claim 1 , wherein the second electrospun polymer layer comprises a polyurethane or a silicone. 
     
     
         5 . The composite prosthetic device of  claim 1 , wherein the second electrospun polymer is selected from the group consisting of polyether block amide, a polyamide, ultra-high molecular weight polyethylene, a polyester, fluorinated ethylene propylene, polyvinylidene fluoride, perfluoroalkoxy, a tetrafluoroethylene/hexafluoropropylene/vinylidene fluoride copolymer, poly(ethylene-co-tetrafluoroethylene), ethylene chlorotrifluoroethylene, polychlorotrifluoroethylene, and copolymers, blends, and derivatives thereof. 
     
     
         6 . The composite prosthetic device of  claim 1 , wherein the second electrospun polymer comprises poly(tetrafluoroethylene). 
     
     
         7 . The composite prosthetic device of  claim 1 , wherein the porous layer comprising a second electrospun polymer penetrates the pores of the porous layer comprising electrospun poly(tetrafluoroethylene). 
     
     
         8 . The composite prosthetic device of  claim 1 , further comprising a structural frame. 
     
     
         9 . The composite prosthetic device of  claim 8 , wherein the structural frame comprises a stent. 
     
     
         10 . The composite prosthetic device of  claim 8 , wherein the structural frame comprises open spaces through which the second electrospun polymer penetrates. 
     
     
         11 . The composite prosthetic device of  claim 1 , wherein the device comprises at least two porous layers comprising electrospun poly(tetrafluoroethylene). 
     
     
         12 . The composite prosthetic device of  claim 1 , wherein the device comprises at least two porous layers comprising a second electrospun polymer. 
     
     
         13 . The composite prosthetic device of  claim 1 , wherein at least one of the inner diameter and the outer diameter of the tubular device comprises a porous layer comprising electrospun poly(tetrafluoroethylene). 
     
     
         14 . The composite prosthetic device of  claim 1 , wherein the device further comprises a non-porous polymeric layer. 
     
     
         15 . The composite prosthetic device of  claim 1 , wherein the cross-section of the device comprises: a lumen surrounded by a first porous layer comprising electrospun poly(tetrafluoroethylene) on the device inner diameter surface; a structural frame embedded in the porous layer comprising electrospun poly(tetrafluoroethylene); a second porous layer comprising electro spun poly(tetrafluoroethylene) on the device outer diameter surface; and a third layer between said first and second layers, comprising a different electrospun polymer. 
     
     
         16 . The composite prosthetic device of  claim 1 , wherein the cross-section of the device comprises: a lumen surrounded by a first porous layer comprising electrospun poly(tetrafluoroethylene) on the inner diameter surface; a structural frame embedded in the porous layer comprising electrospun poly(tetrafluoroethylene); a second porous layer comprising electrospun poly(tetrafluoroethylene) on the device outer diameter surface; and at least two alternating layers of electrospun poly(tetrafluoroethylene) and a different electrospun polymer, between said first and second layers. 
     
     
         17 . The composite prosthetic device of  claim 1 , wherein the cross-section of the device comprises: a lumen surrounded by a first porous layer comprising electrospun poly(tetrafluoroethylene) on the device inner diameter surface; a structural frame embedded in the porous layer comprising electrospun poly(tetrafluoroethylene); and a second porous layer comprising a second electrospun polymer on the device outer diameter surface. 
     
     
         18 . The composite prosthetic device of  claim 1 , wherein the cross-section of the device comprises: a lumen surrounded by a first porous layer comprising electrospun poly(tetrafluoroethylene) on the device inner diameter surface; a structural frame situated around and adjacent to said first porous layer; a second porous layer comprising electrospun poly(ethylene terephthalate) on the device outer diameter surface; and a third layer between said structural frame and said second layer comprising a different electrospun polymer, wherein the structural frame comprises open spaces through which the different electrospun polymer penetrates. 
     
     
         19 . The composite prosthetic device of  claim 1 , wherein the cross-section of the device comprises: a lumen surrounded by a first porous layer comprising electrospun poly(tetrafluoroethylene) on the device inner diameter surface; a structural frame situated around and adjacent to said first porous layer; a second porous layer comprising electrospun poly(tetrafluoroethylene) on the device outer diameter surface; and at least two alternating layers of electrospun poly(tetrafluoroethylene) and a different electrospun polymer between said first and second layers, wherein a layer comprising the different electrospun polymer is adjacent to the structural frame and the structural frame comprises open spaces through which the different electrospun polymer penetrates. 
     
     
         20 . The composite prosthetic device of  claim 1 , wherein the cross-section of the device comprises: a lumen surrounded by a first porous layer comprising electrospun poly(tetrafluoroethylene) on the device inner diameter surface; a second porous layer comprising electrospun poly(tetrafluoroethylene) on the device outer diameter surface; and a third layer between said first and second layers, comprising a different electrospun polymer, wherein a structural frame is embedded in the third layer. 
     
     
         21 . A method for producing a composite prosthetic device comprising:
 combining at least one porous layer comprising electrospun poly(tetrafluoroethylene) and at least one porous layer comprising a second electrospun polymer to give a composite prosthetic device precursor; and   applying pressure, heat, or both pressure and heat to the composite prosthetic device precursor to provide a composite prosthetic device.   
     
     
         22 . The method of  claim 21 , further comprising placing a structural frame around the porous layer comprising electrospun poly(tetrafluoroethylene). 
     
     
         23 . The method of  claim 22 , wherein the structural frame is a stent. 
     
     
         24 . The method of  claim 22 , wherein the structural frame comprises open spaces through which the second electrospun polymer penetrates. 
     
     
         25 . The method of  claim 21 , wherein the combining comprises wrapping the porous layer comprising a second electrospun polymer around the porous layer comprising electrospun poly(tetrafluoroethylene). 
     
     
         26 . The method of  claim 21 , wherein the combining comprises electrospinning the porous layer comprising a second electrospun polymer onto the porous layer comprising electrospun poly(tetrafluoroethylene). 
     
     
         27 . The method of  claim 21 , wherein the second electrospun polymer comprises a solution-electrospun polymer. 
     
     
         28 . The method of  claim 21 , wherein the second electrospun polymer comprises a thermoplastic polymer or a thermoset polymer. 
     
     
         29 . The method of  claim 21 , wherein the second electrospun polymer layer comprises a polyurethane or a silicone. 
     
     
         30 . The method of  claim 21 , wherein the second electrospun polymer is selected from the group consisting of polyether block amide, a polyamide, ultra-high molecular weight polyethylene, a polyester, fluorinated ethylene propylene, polyvinylidene fluoride, perfluoroalkoxy, tetrafluoroethylene/hexafluoropropylene/vinylidene fluoride copolymer, poly(ethylene-co-tetrafluoroethylene), ethylene chlorotrifluoroethylene, polychlorotrifluoroethylene, and copolymers, blends, and derivatives thereof. 
     
     
         31 . The method of  claim 21 , wherein the second electrospun polymer comprises unsintered poly(tetrafluoroethylene) and the method further comprising sintering the composite prosthetic device following the applying step. 
     
     
         32 . The method of  claim 21 , wherein the applying step comprises applying pressure, heat, or both pressure and heat for a time sufficient to result in the penetration of the second electrospun polymer into the pores of the at least one porous layer comprising electrospun poly(tetrafluoroethylene). 
     
     
         33 . The method of  claim 21 , wherein both pressure and heat are applied, sequentially or simultaneously. 
     
     
         34 . The method of  claim 21 , wherein the pressure is between about 500 and about 1500 PSI and the temperature is between about 100° C. and about 400° C. 
     
     
         35 . The method of  claim 21 , wherein the applying step is conducted in a pressure vessel.

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