Intravascular Platforms And Associated Devices

• US 20070213763A1
• Filed: 04/15/2007
• Published: 09/13/2007
• Est. Priority Date: 05/07/2001
• Status: Active Grant

• Current Assignee: Vascular Platforms Ltd.
• Original Assignee: Rafael Medical Technologies Inc.
• Inventors: Brueckheimer, Simon, Kinarty, Danny, Naor, Gil, Bruckheimer, Elchanan, Tavori, Issack
• Granted Patent: US 7,976,561 B2
• Time in Patent Office: Days
• US Class Current: 606/200
• CPC Class Codes: A61F 2/0103 With centering means
• CPC Class Codes: A61F 2/07 Stent-grafts
• CPC Class Codes: A61F 2/86 Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
• CPC Class Codes: A61F 2002/016 made from wire-like elements
• CPC Class Codes: A61F 2230/005 Rosette-shaped, e.g. star-shaped
• CPC Class Codes: A61F 2230/008 paraboloidal

Abstract

An intravascular platform for supporting an intravascular device includes two loops of wire each configured to assume a shape lying generally on a virtual cylinder of given diameter. The two loops are interconnected by at least one connecting wire which maintains the loops axially spaced from each other. Also disclosed are axially-extended loop forms, and associated intravascular devices.

Claims

1. An intravascular platform supporting an intravascular device, the platform comprising:

(a) a first closed loop of wire configured to assume a shape lying substantially on a virtual cylinder of given diameter;

(b) at least one connecting wire interconnected with, and extending from, said first loop;

(c) a second closed loop of wire interconnected with said at least one connecting wire and configured to assume a shape lying substantially on the virtual cylinder at a position displaced from said first loop in a direction substantially parallel to an axis of the virtual cylinder; and

(d) an intravascular device interconnected to said second loop and deployed primarily on a side of said second loop away from said first loop, said intravascular device being supported by said second loop.

2. The platform of claim 1, wherein said first loop, said second loop and said at least one connecting wire are temporarily deformable to assume a delivery state in which each of said loops is folded on itself and the platform is straightened to allow delivery through a minimally invasive delivery system.

3. The platform of claim 1, wherein said first loop, said second loop and said at least one connecting wire are implemented as a unitary piece of wire.

4. The platform of claim 1, wherein said intravascular device is an intravascular filter.

5. The platform of claim 4, wherein said intravascular filter has an outer diameter smaller than the diameter of said virtual cylinder.

6. The platform of claim 4, wherein said intravascular filter includes a predefined lobed filter form, said predefined filter form exhibiting non-reversing curvature,

7. The platform of claim 1, wherein said intravascular device is a stent graft.

8. The platform of claim 1, wherein at least one of said first loop and said second loop is implemented as an axially-extended loop configured such that said axially-extended loop spans a length parallel to the axis of the virtual cylinder at least equal to about 20% of the diameter of said virtual cylinder.

9. The platform of claim 8, wherein said axially-extended loop includes an undulating form with undulations in a direction parallel with the axis of the virtual cylinder.

10. The platform of claim 8, wherein said axially-extended loop includes a first undulating loop portion forming a first part of said loop, and a second undulating loop portion forming a second part of said loop, each of said first and second loop portions having an undulating form including an equal number of peaks and troughs.

11. The platform of claim 8, wherein said axially-extended loop includes a first undulating loop portion forming a first part of said loop, and a second undulating loop portion forming a second part of said loop, each of said first and second loop portions having an undulating form including a single peak and a single trough.

12. The platform of claim 8, wherein said axially-extended loop includes:

(a) a plurality of ring segments together defining a substantially circular ring; and

(b) at least three stabilizing projections projecting from said ring in a direction substantially parallel to the axis of the virtual cylinder.

13. The platform of claim 12, wherein said at least three stabilizing projections include at least two distal stabilizing projections projecting in a first direction substantially parallel to the axis and at least two proximal stabilizing projections projecting in a direction substantially opposite to said first direction.

14. The platform of claim 13, wherein said two distal stabilizing projections are interconnected with said ring at positions substantially evenly spaced around said ring.

15. The platform of claim 14, wherein said two proximal stabilizing projections are interconnected with said ring at positions substantially evenly spaced around said ring, and wherein said positions of interconnection of said proximal stabilizing projections are interspaced around said ring between positions of interconnection of said distal stabilizing projections.

16. The platform of claim 1, further comprising a connector configured for interconnecting said intravascular device with said second loop.

17. A method for deploying an intravascular device within a blood vessel by minimally invasive techniques, the method comprising:

(a) deploying from a catheter located within the blood vessel a self-aligning platform formed from at least one length of wire configured to assume a configuration having a length greater than a diameter of the blood vessel so as to be self-aligning; and

(b) subsequently deploying from the catheter an intravascular device tethered to said platform.