CUT PATTERN TRANSCATHETER VALVE FRAME

• US 20160045306A1
• Filed: 08/11/2015
• Published: 02/18/2016
• Est. Priority Date: 08/18/2014
• Status: Abandoned Application

• Current Assignee: Boston Scientific Scimed, Inc. (Boston Scientific Corporation)
• Original Assignee: Boston Scientific Scimed, Inc. (Boston Scientific Corporation)
• Inventors: Guler, Ismail, Flynn, David M., Chouinard, Paul F., Merdan, Kenneth M., Agrawal, Sumit
• Application Number:
  US14/823,691
• Publication Number:
  US 20160045306A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61F 2/2409 Support rings therefor, e.g. for connecting valves to tissue annuloplasty rings A61F2/2442
• CPC Class Codes: A61F 2/2415 Manufacturing methods
• CPC Class Codes: A61F 2/2418 Scaffolds therefor, e.g. support stents
• CPC Class Codes: A61F 2/243 Deployment by mechanical expansion
• CPC Class Codes: A61F 2210/0014 using shape memory or superelastic materials, e.g. nitinol
• CPC Class Codes: A61F 2210/0057 stretchable
• CPC Class Codes: A61F 2220/0025 Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
• CPC Class Codes: A61F 2220/0033 made by longitudinally pushing a protrusion into a complementary-shaped recess, e.g. held by friction fit
• CPC Class Codes: A61F 2220/0041 using additional screws, bolts, dowels or rivets, e.g. connecting screws
• CPC Class Codes: A61F 2230/0004 Rounded shapes, e.g. with rounded corners
• CPC Class Codes: A61F 2230/0017 Angular shapes
• CPC Class Codes: A61F 2230/0021 square
• CPC Class Codes: A61F 2230/005 Rosette-shaped, e.g. star-shaped
• CPC Class Codes: A61F 2230/0056 W-shaped, e.g. M-shaped, sigma-shaped
• CPC Class Codes: A61F 2230/0058 X-shaped
• CPC Class Codes: A61F 2230/0069 cylindrical
• CPC Class Codes: A61F 2240/001 Designing or manufacturing processes

Abstract

A transcatheter valve frame comprising a valve frame comprising an elongate tubular member having a longitudinal axis and a circumference, the elongate tubular member comprising a plurality of struts interconnected by peaks and valleys that define a closed cell construction comprising a plurality of interconnected cells, the valve frame is formed from a single piece of material comprising a metal or metal alloy, the valve frame having a diameter that increases upon axial compression and the valve frame comprising a locking mechanism integral with the valve frame configured to fix the diameter of the valve frame.

Claims

1. A transcatheter valve frame comprising:

a valve frame comprising an elongate tubular member having a longitudinal axis and a circumference, the elongate tubular member comprising a plurality of struts interconnected by peaks and valleys that define a closed cell construction comprising a plurality of interconnected cells, the valve frame is formed from a single piece of material comprising a metal or metal alloy, the valve frame having a diameter that increases upon axial compression; and

the valve frame comprising a locking mechanism integral with the valve frame configured to fix the diameter of the valve frame.

2. The transcatheter valve frame of claim 1 wherein the plurality of cells define a uniform pattern throughout the elongate tubular member.

3. The transcatheter valve frame of claim 1 wherein the plurality of cells define a uniform pattern throughout the elongated tubular member, the plurality of cells comprises arcuate-shaped diagonal elements.

4. The transcatheter valve frame of claim 3 comprising a plurality of cylindrical bands, within each cylindrical band, each of the arcuate-shaped diagonal elements is oriented in the same direction about the circumference of the elongate tubular member.

5. The transcatheter valve frame of claim 3 wherein the arcuate-shaped diagonal elements comprise a less arcuate shape in a stretched condition than in a non-stretched condition.

6. The transcatheter valve frame of claim 1 wherein the plurality of struts are connected by peaks and valleys are arranged in a plurality of cylindrical bands formed in the elongate tubular member, each cylindrical band forming a generally zig-zag pattern that forms a series of sequential diagonal elements connected to one another and extending about the circumference of the elongate tubular member.

7. The transcatheter valve frame of claim 6 comprising a plurality of longitudinal connectors extending between and connecting adjacent bands.

8. The transcatheter valve frame of claim 6 wherein each of the sequential diagonal element comprises first and second generally straight portions having first and second ends, the second ends being connected together by a curved portion, the first ends being connected to preceding and succeeding diagonal elements.

9. The transcatheter valve frame of claim 1 wherein the elongate tubular member is radially expandable between an unexpanded state and an expanded state.

10. The transcatheter valve frame of claim 1 wherein the plurality of cells are honeycomb-shaped.

11. The transcatheter valve frame of claim 1 wherein the plurality of cells are diamond-shaped.

12. The transcatheter valve frame of claim 1 wherein the plurality of cells are generally bat-shaped wherein each cell defines a head region, a tail region and opposing curved wing regions, and a plurality of connectors extending between and connecting adjacent cells.

13. The transcatheter valve frame of claim 12, the elongate tubular body comprising a plurality of cylindrical bands, each cylindrical band comprising a sequence of the generally bat-shaped cells, adjacent cylindrical bands are connected to one another by longitudinal connectors.

14. The transcatheter valve frame of claim 1 wherein the plurality of cells comprise a four-lobed shape wherein each lobe is uniformly spaced from an adjacent lobe.

15. The transcatheter valve frame of claim 1 wherein the locking mechanism is a buckle or post integral with the valve frame.

16. The transcatheter valve frame of claim 1 wherein the metal or metal alloy is a shape memory alloy.

17. The transcatheter valve frame of claim 1 wherein the metal of metal alloy is nitinol.

18. A method of making a valve frame, the method comprising:

providing a elongate tubular member formed from a continuous piece of material; and

cutting a pattern into the elongate tubular member, the pattern comprising a plurality of struts interconnected by peaks and valleys that define a closed cell construction comprising a plurality of interconnected cells to form the valve frame.

19. The method of claim 18 further comprising forming a locking mechanism in the valve frame.

20. The method of claim 19 comprising forming the locking mechanism in the valve frame by cutting or micromachining.