Method And Apparatus For Treatment Of Cardiac Valves

• US 20080015671A1
• Filed: 11/21/2005
• Published: 01/17/2008
• Est. Priority Date: 11/19/2004
• Status: Abandoned Application

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Great Ormond Street Hospital for Children NHS Trust
• Inventors: Bonhoeffer, Philipp
• Application Number:
  US11/791,193
• Publication Number:
  US 20080015671A1
• Time in Patent Office: Days
• US Class Current: 623/1.2
• CPC Class Codes: A61F 2/2409 Support rings therefor, e.g. for connecting valves to tissue annuloplasty rings A61F2/2442
• CPC Class Codes: A61F 2/2418 Scaffolds therefor, e.g. support stents
• CPC Class Codes: A61F 2/2475 Venous valves
• CPC Class Codes: A61F 2230/0078 hyperboloidal

Abstract

Provided is a method and apparatus for placing a valve (14) in a tubular organ having a greater diameter than the valve, comprising: an expandable tubular adapter (10) having an outer portion with a diameter suitable for contacting the inner walls of the tubular organ, and an inner portion with a diameter suitable for placement of the valve; a valve mounted within the inner portion of the adapter; and a system for placing a valved vascular segment in a tubular organ having a greater inner diameter than the outer diameter of the vascular segment, comprising: an expandable tubular adapter having an outer portion with a diameter suitable for contacting the inner walls of the tubular organ, and an inner portion with a diameter suitable for placement of the valve; an expandable valved vascular segment, expandable to the diameter of the inner portion of the adapter.

Claims

1. A method for placing a valve in a tubular organ having a greater diameter than the valve, which method comprises:

delivering an expandable tubular adapter having an outer portion with a diameter suitable for contacting the inner walls of the tubular organ, and an inner portion with a diameter suitable for placement of the valve;

expanding the adapter so that the outer portion contacts the tubular organ; and

placing the valve within the inner portion of the adapter.

2. A method according to claim 1 wherein the tubular organ is a blood vessel and wherein delivering the adapter comprises delivering the adapter to a desired site within the blood vessel and wherein expanding the adapter comprises expanding the adapter so that the outer portion contact the blood vessel.

3. A method according to claim 2 wherein the valve is a segment of bovine jugular vein and the blood vessel is a right ventricular outflow tract and wherein delivering the adapter comprises delivering the adapter to a desired site within the outflow tract and wherein expanding the adapter comprises expanding the adapter so that the outer portion contacts the outflow tract.

4. A method according to claim 2, wherein the adapter comprises a stent and wherein expanding the adapter comprises expanding the stent.

5. A method according to claim 4 wherein the adapter further comprises a liquid resistant covering extending over the outer portion of the adapter and wherein expanding the adapter further comprises expanding the covering to contact the tubular organ.

6. A method according to claim 4, wherein the adapter comprises a self expanding stent and wherein expanding the adapter comprises releasing the adapter from a constraint in order to allow it to self-expand.

7. A method according to claim 4, wherein placing the valve in the adapter occurs prior to expanding the adapter.

8. A method according to claim 4, wherein placing the valve in the adapter occurs after expanding the adapter.

9. A method according to claim 8, wherein the valve is provided with a stent and wherein placing the valve comprises expanding the valve'"'"'s stent.

10. A method according to claim 9 wherein the stent is a balloon expandable stent and wherein expanding the valve'"'"'s stent comprises expanding the valve'"'"'s stent using a balloon.

11. A method of placing a valve in a tubular organ having a greater diameter than the valve, comprising:

delivering an expandable tubular adapter having a larger diameter portion and a lesser diameter portion to a desired site within the tubular organ;

placing the valve within the lesser diameter portion of the adapter.

12. An apparatus for placing a valve in a tubular organ having a greater diameter than the valve, comprising:

an expandable tubular adapter having an outer portion with a diameter suitable for contacting the inner walls of the tubular organ, and an inner portion with a diameter suitable for placement of the valve;

a valve mounted within the inner portion of the adapter.

13. An apparatus according to claim 12 wherein the adapter comprises a stent.

14. An apparatus according to claim 13 wherein the adapter further comprises a liquid resistant covering extending over the outer portion of the adapter.

15. An apparatus according to claim 13, wherein the adapter comprises a self expanding stent.

16. An apparatus for placing a valve in a tubular organ having a greater diameter than the valve, comprising:

an expandable tubular adapter having a larger diameter portion and a lesser diameter portion, the larger diameter portion expandable to the diameter of the tubular organ; and

a valve mounted within the lesser diameter of the adapter.

17. A system for placing a valved vascular segment in a tubular organ having a greater inner diameter than the outer diameter of the vascular segment, comprising:

an expandable tubular adapter having an outer portion with a diameter suitable for contacting the inner walls of the tubular organ, and an inner portion with a diameter suitable for placement of the valve;

an expandable valved vascular segment, expandable to the diameter of the inner portion of the adapter.

18. A system according to claim 17 wherein the adapter further comprises a liquid resistant impermeable covering extending over the outer portion of the adapter.

19. A system according to claim 18 wherein the adapter comprises a stent.

20. A system according to claim 19, wherein the adapter comprises a self expanding stent.

21. A system according to claim 17, wherein the valved vascular segment is provided with a stent, expandable to the diameter of the inner portion of the adapter.

22. A system according to claim 21 wherein the vascular segment'"'"'s stent is a balloon expandable stent.

23. A system for placing a valved vascular segment in a tubular organ having a greater inner diameter than the outer diameter of the vascular segment, comprising:

an expandable tubular adapter having a larger diameter portion and a lesser diameter portion, the larger diameter portion expandable to the inner diameter of the tubular organ; and

an expandable valved vascular segment, expandable to an inner diameter of the lesser diameter portion of the adapter.