Systems and methods for making encapsulated hourglass shaped stents
US-2019110911-A1 · Apr 18, 2019 · US
Electrospun PTFE coated stent and method of use
US10653512B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10653512-B2 |
| Application number | US-201414152590-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 10, 2014 |
| Priority date | Jan 28, 2011 |
| Publication date | May 19, 2020 |
| Grant date | May 19, 2020 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A stent or other prosthesis may be formed by coating a single continuous wire scaffold with a polymer coating. The polymer coating may consist of layers of electrospun polytetrafluoroethylene (PTFE). Electrospun PTFE of certain porosities may permit endothelial cell growth within the prosthesis.
First claim
Opening claim text (preview).
The invention claimed is: 1. A stent, comprising: a first layer of electrospun polytetrafluoroethylene (PTFE) fibers, a second layer of electrospun PTFE fibers, wherein the first and second layers have different porosities, a tie layer disposed between the first and second layers of electrospun PTFE fibers, wherein the tie layer is a non-porous fluorinated ethylene propylene (FEP) film that is impermeable to tissue ingrowth, wherein the film continuously extends to cover the first layer from a first layer proximal end to a first layer distal end; and a scaffolding structure configured to resist radial compression when disposed in a lumen of a patient; wherein the scaffolding structure comprises two longitudinal portions of different compressibilities. 2. The stent of claim 1 , wherein the scaffolding structure comprises a metal structure. 3. The stent of claim 2 , wherein the scaffolding structure comprises a wire. 4. The stent of claim 1 , wherein the scaffolding structure comprises a polymeric structure. 5. The stent of claim 1 , wherein the scaffolding structure comprises a midbody portion and wherein the midbody portion of the stent is configured to hold open diseased tissue. 6. The stent of claim 5 , wherein the midbody portion is relatively less compressible than a first and a second end of the scaffolding structure. 7. The stent of claim 1 , wherein the scaffolding structure defines two end portions configured to reduce trauma to healthy tissue at the ends of the stent.
Assignees
Inventors
Classifications
Macromolecular materials · CPC title
Electro-spinning (non-woven fabrics produced by electro-spinning D04H1/728) · CPC title
with bands having a meander structure, adjacent bands being connected to each other · CPC title
the wire-like elements formed as helical or spiral coils · CPC title
Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents (stent-grafts for tubular structures of the body other than blood vessels A61F2/04; stent-grafts for blood vessels A61F2/07) · CPC title
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- What does patent US10653512B2 cover?
- A stent or other prosthesis may be formed by coating a single continuous wire scaffold with a polymer coating. The polymer coating may consist of layers of electrospun polytetrafluoroethylene (PTFE). Electrospun PTFE of certain porosities may permit endothelial cell growth within the prosthesis.
- Who is the assignee on this patent?
- Merit Medical Systems Inc
- What technology area does this patent fall under?
- Primary CPC classification A61F2/06. Mapped technology areas include Human Necessities.
- When was this patent published?
- Publication date Tue May 19 2020 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).