Stent

• US 9,943,425 B2
• Filed: 01/12/2016
• Issued: 04/17/2018
• Est. Priority Date: 03/15/2013
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Vogel, Jeffrey H, Noffke, Paul, Balachandran, Ram
• Primary Examiner(s): Nguyen, Victor
• Application Number:
  US14/993,734
• Publication Number:
  US 20160120670A1
• Time in Patent Office: 826 Days
• CPC Class Codes: A61F 2/82 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; instruments specially adapted for placement or removal of stents or stent-grafts A61F2/95; for closing wounds, or holding wounds closed A61B17/04 - A61B17/115; dilators A61M29/00
• CPC Class Codes: A61F 2/89 the wire-like elements comprising two or more adjacent rings flexibly connected by separate members
• CPC Class Codes: A61F 2/915 with bands having a meander structure, adjacent bands being connected to each other
• CPC Class Codes: A61F 2002/91508 the meander having a difference in amplitude along the band
• CPC Class Codes: A61F 2002/91516 the meander having a change in frequency along the band
• CPC Class Codes: A61F 2002/91575 connected peak to trough

Abstract

A stent comprising a stent body and a plurality of cells is disclosed. The stent body defines a length. Each cell includes two structural members extending in an undulating pattern. Each structural member includes a plurality of cell segments defining a plurality of nodes therebetween. At least one node includes a non-constant radius of curvature.

Claims

1. A stent comprising:

a stent body defining a length and comprising a plurality of cells,

each cell comprising two structural members extending in an undulating pattern, and

each structural member comprising a plurality of cell segments defining a plurality of nodes therebetween,

wherein the plurality of nodes of at least one structural member of the two structural members includes a first node and a second node,

wherein a first inner edge of the first node defines a first radius of curvature that is non-constant and a second inner edge of the second node defines a second radius of curvature that is substantially constant,

wherein the first radius of curvature is greater than the second radius of curvature,

wherein the first inner edge of the first node includes a first inner portion and a second inner portion, and wherein the first inner portion defines a third radius of curvature different than a fourth radius of curvature defined by the second portion.

2. The stent of claim 1, wherein the first radius of curvature is between about 0.0050 inches and about 0.0150 inches.

3. The stent of claim 1, wherein the first radius of curvature is between about 0.0015 inches and about 0.0030 inches.

4. The stent of claim 1, wherein the second radius of curvature is between about 0.0001 inches and about 0.0020 inches.

5. The stent of claim 1, wherein the third radius of curvature is between about 0.0050 inches and about 0.0150 inches, and the fourth radius of curvature is between about 0.0015 inches and about 0.0030 inches.