ENDOVASCULAR DELIVERY SYSTEM WITH AN IMPROVED RADIOPAQUE MARKER SCHEME

• US 20130338752A1
• Filed: 03/14/2013
• Published: 12/19/2013
• Est. Priority Date: 06/15/2012
• Status: Active Grant

• Current Assignee: Endologix
• Original Assignee: Trivascular Incorporated
• Inventors: Geusen, Mark, Chobotov, Michael V.
• Granted Patent: US 9,233,015 B2
• Time in Patent Office: Days
• US Class Current: 623/1.11
• CPC Class Codes: A61F 2/95 Instruments specially adapted for placement or removal of stents or stent-grafts
• CPC Class Codes: A61F 2/9522 Means for mounting a stent or stent-graft onto or into a placement instrument
• CPC Class Codes: A61F 2/966 with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod
• CPC Class Codes: A61F 2002/9511 the retaining means being filaments or wires
• CPC Class Codes: A61F 2002/9665 with additional retaining means
• CPC Class Codes: A61F 2230/0069 cylindrical
• CPC Class Codes: A61F 2250/0003 having an inflatable pocket filled with fluid, e.g. liquid or gas
• CPC Class Codes: A61F 2250/0098 radio-opaque, e.g. radio-opaque markers

Abstract

An endovascular delivery system for an endovascular prosthesis includes a radiopaque marker system for accurate delivery of the prosthesis. The radiopaque marker system is disposed within a prosthesis or stent holder within the delivery system. The radiopaque marker system includes a plurality of radiopaque markers that provide different views rotation of the prosthesis or stent holder.

Claims

1. An endovascular delivery system, comprising:

an elongate outer tubular device having an open lumen and opposed proximal and distal ends with a medial portion therein between;

a prosthesis holder disposed within said outer tubular device, said prosthesis holder comprising;

an axial guidewire extending through said prosthesis holder

a body surrounding said axial guidewire, said body comprising at least two generally cylindrical markers aligned in a direction parallel to said axial guidewire and each spaced an equal distance from said axial guidewire; and

an outer surface, upon which a prosthesis may be secured prior to delivery.

2. The delivery system of claim 1, wherein said prosthesis holder is made of a material that is not fluorescent or radiopaque.

3. The delivery system of claim 1, wherein said axial guidewire is made of a material that is fluorescent or radiopaque.

4. The delivery system of claim 1, wherein each of said generally cylindrical markers are made of a material that is fluorescent or radiopaque.

5. The delivery system of claim 4, wherein each of said generally cylindrical markers are made of a combination of platinum and iridium.

6. The delivery system of claim 1, further comprising a third generally cylindrical marker aligned in a direction parallel to said axial guidewire, wherein each of said generally cylindrical markers is spaced an equal distance from said axial guidewire.

7. The delivery system of claim 6, wherein each of said generally cylindrical markers are spaced at about 90°

intervals as measured around the axis formed by the axial guidewire.

8. The delivery system of claim 7, wherein each of said generally cylindrical markers are made of a material that is fluorescent or radiopaque.

9. The delivery system of claim 8, wherein each of said generally cylindrical markers are made of a combination of platinum and iridium.

10. The delivery system of claim 1, further comprising at least one perpendicular marker, wherein said perpendicular marker is disposed at a perpendicular angle to the axial guidewire.

11. The delivery system of claim 10, wherein said perpendicular marker is made of a material that is fluorescent or radiopaque.

12. The delivery system of claim 11, wherein said perpendicular marker is made of a combination of platinum and iridium.

13. The delivery system of claim 6, further comprising at least one perpendicular marker, wherein said perpendicular marker is disposed at a perpendicular angle to the axial guidewire.

14. The delivery system of claim 13, wherein said perpendicular marker is made of a material that is fluorescent or radiopaque.

15. The delivery system of claim 14, wherein said perpendicular marker is made of a combination of platinum and iridium.

16. The delivery system of claim 1, wherein said prosthesis is a stent-graft.

17. The delivery system of claim 16, wherein said prosthesis holder comprises a plurality of anchors to secure said stent-graft to said outer surface of said prosthesis holder.

18. The delivery system of claim 1, wherein said generally cylindrical markers are press-fitted into said body.

19. The delivery system of claim 1, wherein said generally cylindrical markers are molded into said body.

20. The delivery system of claim 1, wherein said generally cylindrical markers have a diameter of about 0.030 inches.

21. The delivery system of claim 1, wherein said axial guidewire has a diameter of about 0.035 inches.

22. The delivery system of claim 6, wherein said generally cylindrical markers are press-fitted into said body.

23. The delivery system of claim 6, wherein said generally cylindrical markers are molded into said body.

24. The delivery system of claim 6, wherein said generally cylindrical markers have a diameter of about 0.010 to about 0.040 inches.

25. The delivery system of claim 6, wherein said axial guidewire has a diameter of about 0.010 to about 0.050 inches.

26. The delivery system of claim 1, wherein each of said generally cylindrical markers are disposed in said body at a distance of about 0.010 inches to about 0.015 inches from said axial guidewire.

27. The delivery system of claim 6, wherein each of said generally cylindrical markers are disposed in said body at a distance of about 0.010 inches to about 0.015 inches from said axial guidewire.

28. A method of delivering a prosthesis within a body lumen, comprising the steps of:

(a) providing a delivery system comprising;

(i) an elongate outer tubular device having an open lumen and opposed proximal and distal ends with a medial portion therein between; and

(ii) a prosthesis holder disposed within said outer tubular device, said prosthesis holder comprising;

an axial guidewire extending through said prosthesis holder

a body surrounding said axial guidewire, said body comprising at least two generally cylindrical markers aligned in a direction parallel to said axial guidewire and each spaced an equal distance from said axial guidewire;

an outer surface; and

a prosthesis secured to said outer surface;

(b) inserting said delivery system within a body lumen and directing said prosthesis holder to a desired location within the lumen;

(c) using a device to view the location of the generally cylindrical markers;

(d) aligning said prosthesis holder at a rotational angle based upon the generally cylindrical markers; and

(e) releasing said prosthesis within said body lumen.