CATHETER SYSTEM WITH STENT APPARATUS FOR CONNECTING ADJACENT BLOOD VESSELS

• US 20070203572A1
• Filed: 04/16/2007
• Published: 08/30/2007
• Est. Priority Date: 01/25/2006
• Status: Abandoned Application

• Current Assignee: James Joye, Richard Heuser
• Original Assignee: James Joye, Richard Heuser
• Inventors: Joye, James, Heuser, Richard
• Application Number:
  US11/735,629
• Publication Number:
  US 20070203572A1
• Time in Patent Office: Days
• US Class Current: 623/1.350
• CPC Class Codes: A61B 17/11 for performing anastomosis; Buttons for anastomosis
• CPC Class Codes: A61B 17/3478 Endoscopic needles, e.g. for infusion biopsy needles A61B10/0233; catheters with injection needles A61M25/0067
• CPC Class Codes: A61B 2017/00252 for by-pass connections, i.e. connections from heart chamber to blood vessel or from blood vessel to blood vessel
• CPC Class Codes: A61B 2017/00778 Operations on blood vessels A61B2017/22097, A61B2017/320741 take precedence
• CPC Class Codes: A61B 2017/00876 magnetic
• CPC Class Codes: A61B 2017/06071 with an abrupt angle formed between two adjacent sections
• CPC Class Codes: A61B 2017/1107 for blood vessels
• CPC Class Codes: A61B 2017/1139 Side-to-side connections, e.g. shunt or X-connections
• CPC Class Codes: A61B 2017/22054 with two balloons
• CPC Class Codes: A61B 2017/22069 Immobilising; Stabilising
• CPC Class Codes: A61F 2/2475 Venous valves
• CPC Class Codes: A61F 2/2493 Transmyocardial revascularisation [TMR] devices
• CPC Class Codes: A61F 2/856 Single tubular stent with a side portal passage
• CPC Class Codes: A61F 2/90 characterised by a net-like or mesh-like structure
• CPC Class Codes: A61F 2/954 for placing stents or stent-grafts in a bifurcation
• CPC Class Codes: A61F 2002/8486 provided on at least one of the ends
• CPC Class Codes: A61F 2250/0018 differing in elasticity, stiffness or compressibility
• CPC Class Codes: A61F 2250/006 modular

Abstract

The bifurcated stent apparatus for use by a physician includes a main stent for inserting into a bifurcated blood vessel and a side stent. The main stent has an opening on the side which is the same diameter as the side stent. The main stent may be is configured to receive a first end of the side stent, to create a bifurcated stent. Alternatively, the side stent and the main stent may form a single integrated unit. The side stent includes a one-way valve on the second end. The one-way valve may be opened or closed, depending on whether the physician desires that fluid pass through. While closed, the valve may be configured to allow passage of various cardiovascular instruments, including but not limited to guidewires, catheters, balloons, or any other device used in blood vessel operations, while not allowing the passage of any fluids.

Claims

1. A bifurcated stent apparatus for connecting a first bifurcated blood vessel having a first primary path and a first occluded secondary path, with a second bifurcated blood vessel having a second primary path and a second secondary path, the apparatus comprising:

a main stent including a first opening in the side having a first diameter, a first proximal end and a first distal end, the main stent being insertable into a position wherein the first distal end is extended into the first primary path and the first opening is adjacent to a site within the first bifurcated blood vessel for a fistula;

a side stent having a second diameter substantially equal to the first diameter, a second proximal end and a second distal end, the side stent being insertable to a position wherein the second proximal end is adjacent to the first opening, and the second distal end extends into the second bifurcated blood vessel; and

a one-way valve adjacent to the second distal end.

2. The stent apparatus of claim 1, wherein the second distal end extends into the second secondary path.

3. The stent apparatus of claim 1, wherein the second distal end extends into the second primary path.

4. The stent apparatus of claim 1, wherein the one-way valve is configured to allow a wire to pass without allowing any fluid to pass.

5. The stent apparatus of claim 1, wherein the one-way valve is configured to allow a catheter to pass without allowing any fluid to pass.

6. The stent apparatus of claim 1, wherein the one-way valve is configured to allow a catheter carrying a constricted stent to pass without allowing any fluid to pass.

7. The stent apparatus of claim 1, wherein the one-way valve is configurable between an open position and a closed position, wherein no fluid may pass while the valve is in the closed position, and fluid may pass when the valve is in the open position.

8. The stent apparatus of claim 1, wherein the side stent is between 2 cm and 5 cm from the second proximal end to the second distal end.

9. The stent apparatus of claim 1, wherein the first opening is radiopaque.

10. The stent apparatus of claim 1, wherein the main stent and the side stent are comprised of self-expanding nitinol.

11. The stent apparatus of claim 1, wherein the side stent is coupled at the first proximal end to the first opening of the main stent.

12. The stent apparatus of claim 1, wherein the main stent and the side stent are covered in an impermeable membrane.

13. A side stent, for coupling to a main stent having a side opening of a first diameter, comprising:

a tubular portion having a second diameter substantially equal to the first diameter, a proximal end and a distal end, the tubular portion being fixable at the proximal end to the first opening; and

a one-way valve adjacent to the distal end.

14. The side stent of claim 13, wherein the one-way valve is configured to allow a wire to pass without allowing any fluid to pass.

15. The side stent of claim 13, wherein the one-way valve is configured to allow a catheter to pass without allowing any fluid to pass.

16. The side stent of claim 13, wherein the one-way valve is configured to allow a catheter carrying a constricted stent to pass without allowing any fluid to pass.

17. The side stent of claim 13, wherein the one-way valve is configurable between an open position and a closed position, wherein no fluid may pass while the valve is in the closed position, and fluid may pass when the valve is in the open position.

18. The side stent of claim 13, wherein the tubular portion is between 2 cm and 5 cm from the proximal end to the distal end.

19. The side stent of claim 13, wherein the tubular portion is comprised of self-expanding nitinol.

20. The side stent of claim 13, wherein the tubular portion is covered in an impermeable membrane.

21. The side stent of claim 13, wherein the tubular portion is comprised of self-expanding nitinol.

22. A catheter system for creating and maintaining a fistula between a first bifurcated blood vessel having a first primary path and a first occluded secondary path and a second bifurcated blood vessel having a second primary path and a second secondary path, the system comprising:

a first catheter having a distal end insertable to a position wherein the distal end is adjacent a site within the first blood vessel for the fistula, the first catheter including a piercing tool adjacent the distal end;

a second catheter having a distal end insertable to a position wherein the distal end is adjacent a site within the second bifurcated blood vessel for the fistula, the second catheter including adjacent the distal end a receptor having a distal opening, a proximal end, and a guide surface disposed between the distal opening and the proximal end;

one or more magnets disposed on at least one of the catheters to draw the piercing tool along the guide surface of the receptor;

a main stent including a first opening in the side having a first diameter, a first proximal end and a first distal end, the main stent being insertable into a position wherein the first distal end is extended into the first primary path and the first opening is adjacent to the site within the first bifurcated blood vessel for the fistula;

a side stent having a second diameter substantially equal to the first diameter, a second proximal end and a second distal end, whereby upon creation of the fistula, the side stent is insertable to a position wherein the second proximal end is adjacent to the first opening, and the second distal end extends through the fistula into the second bifurcated blood vessel; and

a one-way valve adjacent to the second distal end.

23. The catheter system of claim 22, wherein the second distal end extends into the second secondary path.

24. The catheter system of claim 22, wherein the second distal end extends into the second primary path.

25. The catheter system of claim 22, wherein the one-way valve is configured to allow a wire to pass without allowing any fluid to pass.

26. The catheter system of claim 22, wherein the one-way valve is configured to allow a catheter to pass without allowing any fluid to pass.

27. The catheter system of claim 22, wherein the one-way valve is configured to allow a catheter carrying a constricted stent to pass without allowing any fluid to pass.

28. The catheter system of claim 22, wherein the one-way valve is configurable between an open position and a closed position, wherein no fluid may pass while the valve is in the closed position, and fluid may pass when the valve is in the open position.

29. The catheter system of claim 22, wherein the side stent is between 2 cm and 5 cm from the second proximal end to the second distal end.

30. The catheter system of claim 22, wherein the first opening is radiopaque.

31. The catheter system of claim 22, wherein the main stent and the side stent are comprised of self-expanding nitinol.

32. The catheter system of claim 22, wherein the side stent is coupled at the first proximal end to the first opening of the main stent.

33. The catheter system of claim 22, wherein the main stent and the side stent are covered in an impermeable membrane.

34. A method of creating and maintaining a fistula between a first bifurcated blood vessel having a first primary path and a first occluded secondary path and a second bifurcated blood vessel having a second primary path and a second secondary path, comprising the steps of:

inserting a main stent into the first bifurcated vessel, the main stent including a first opening in the side having a first diameter, a first proximal end and a first distal end, whereby upon insertion the first distal end extends into the first primary path and the first opening is adjacent to a site within the first bifurcated blood vessel for the fistula, the main stent preserving blood flow through the first primary passage;

inserting a first catheter having a distal end to a position wherein the distal end is adjacent the site within the first blood vessel for the fistula, the first catheter including a piercing tool adjacent the distal end;

inserting a second catheter having a distal end to a position wherein the distal end is adjacent a site within the second bifurcated blood vessel for the fistula, the second catheter including adjacent the distal end a receptor having a distal opening, a proximal end, and a guide surface disposed between the distal opening and the proximal end;

creating the fistula by drawing the piercing tool along the guide surface of the receptor using one or more magnets disposed on at least one of the catheters;

inserting a side stent at least partially into the second bifurcated vessel, the side stent having a second diameter substantially equal to the first diameter, a second proximal end, a second distal end and a one-way valve adjacent to the second distal end, whereby upon insertion the second proximal end is adjacent the first opening, and the second distal end extends through the fistula into the second bifurcated blood vessel.

35. A method of creating and maintaining a fistula between a first bifurcated blood vessel having a first primary path and a first occluded secondary path and a second bifurcated blood vessel having a second primary path and a second secondary path, comprising the steps of:

inserting a main stent into the first bifurcated vessel, the main stent having a first opening in the side having a first diameter, a retractable side stent coupled to the opening, a first proximal end and a first distal end, whereby upon insertion the first distal end extends into the first primary path and the side stent is retracted towards the main stent and is adjacent to a site within the first bifurcated blood vessel for the fistula, the main stent preserving blood flow through the first primary passage;

inserting a first catheter having a distal end to a position wherein the distal end is adjacent the site within the first blood vessel for the fistula, the first catheter including a piercing tool adjacent the distal end;

inserting a second catheter having a distal end to a position wherein the distal end is adjacent a site within the second bifurcated blood vessel for the fistula, the second catheter including adjacent the distal end a receptor having a distal opening, a proximal end, and a guide surface disposed between the distal opening and the proximal end;

creating the fistula by drawing the piercing tool along the guide surface of the receptor using one or more magnets disposed on at least one of the catheters;

extending the side stent, the side stent having a second diameter substantially equal to the first diameter, a second distal end and a one-way valve adjacent to the second distal end, whereby upon extension the second distal end extends through the fistula into the second bifurcated blood vessel.