US 12,629,250 B2Granted

System and method for applying material to a stent

AssigneeEdwards Lifesciences Corporation

InventorsPaul P. Nguyen, Chris McWilliams, Connor Cady, Cody Jeremiah Kratochvil, Dylan Joseph Kratochvil

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Abstract

Methods for applying polymeric material to a stent are disclosed. A mandrel is coupled to a stent body. The stent body comprises an inner surface defining a cavity and an outer surface opposing the internal surface. The stent body also has a length along an axis defined by the mandrel between a first end of the stent body and a second end of the stent body. An electrospun material is applied to at least a portion of the stent external surface and to at least a portion of the mandrel to form a coating sheet. A portion of the coating sheet extends from at least one of the first end or second end of the stent to the mandrel. One or both of the stent and the mandrel are moved to apply at least some of the portion of the coating sheet onto the internal surface of the stent body.

Claims17

Dependent claims

A bioprosthetic heart valve comprising:

an anchoring skirt comprising:
a tubular stent body having a length between a first edge and a second edge;
wherein the stent body comprises an inner surface defining a cavity and an outer surface opposing the inner surface, wherein the inner surface and the outer surface extend along the length between the first edge and the second edge;
and
a coating sheet comprising electrospun polymeric material adhered to the inner surface and the outer surface;
wherein the electrospun polymeric material is single continuous and seamless tubular sheet that comprises a first portion, a second portion, and a third portion;
wherein the first portion is directly adhered via electrostatic charge to the outer surface of the stent body;
wherein the electrospun polymeric material is folded over the first edge of the stent body and the second portion is directly adhered via electrostatic charge to the inner surface of the stent body;
wherein the electrospun polymeric material is folded over the second edge of the stent body and the third portion is adhered to the first portion of the electrospun polymeric material;
and
a valve member, wherein the first edge of the anchoring skirt is attached to an inflow end of the valve member.

8 more elements

A bioprosthetic heart valve comprising:

an anchoring skirt comprising:
a tubular stent body having a length between a first edge and a second edge;
wherein the stent body comprises an inner surface defining a cavity and an outer surface opposing the inner surface, wherein the inner surface and the outer surface extend along the length between the first edge and the second edge;
and
a coating sheet comprising electrospun polymeric material adhered to the inner surface and the outer surface;
wherein the electrospun polymeric material comprises a first portion, a second portion, and a third portion, wherein the first portion is adhered via electrostatic charge to the outer surface of the stent body;
wherein the electrospun polymeric material is folded over the first edge of the stent body, wherein the second portion is adhered via electrostatic charge to the inner surface of the stent body,
wherein the electrospun polymeric material is folded over the second edge, wherein the third portion is adhered to at least a portion of the first portion of the electrospun polymeric material, wherein the electrospun material is a singular continuous layer,
a valve member, wherein the first edge of the anchoring skirt is attached to an inflow end of the valve member.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/666,342Filed 28 Oct 2019 · continuation
Priority: 16 May 2016
Published: US 2020/0060813 A127 Feb 2020
Granted: 19 May 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification11 codes

A61F 2/2415
With soft flexible valve members, e.g. tissue valves shaped like natural valves: manufacturing methods
A61F 2/2418
With soft flexible valve members, e.g. tissue valves shaped like natural valves: scaffolds therefor, e.g. support stents
A61L 27/34
Materials for coating prostheses: macromolecular materials
A61L 31/10
Materials for coatings: macromolecular materials

Family

Application62/337,065Us provisional application · filed 16 May 2016
PCT/US2017/032970Parent of this continuation · filed 16 May 2017
Application15/611,406Parent of this continuation · filed 1 Jun 2017
US 2020/0060813 A1Pre-grant publication · published 27 Feb 2020
US 10,456,245 B2Parent of this continuation
US 2017/0325976 A1Published application
US 12,629,250 B2This patent

From the US filing history. Foreign family members aren’t listed.