Systems and methods for bi-lateral guidewire cannulation of branched body lumens

• US 20060069323A1
• Filed: 09/22/2005
• Published: 03/30/2006
• Est. Priority Date: 09/24/2004
• Status: Abandoned Application

• Current Assignee: AngioDynamics, Inc.
• Original Assignee: FlowMedica, Inc. (AngioDynamics, Inc.)
• Inventors: Patel, Samir, Goodson, Harry B. IV, Valencia, Aurelio, Elkins, Jeffrey M., Aboytes, Richard
• Application Number:
  US11/233,562
• Publication Number:
  US 20060069323A1
• Time in Patent Office: Days
• US Class Current: 600/585
• CPC Class Codes: A61M 25/01 Introducing, guiding, advancing, emplacing or holding catheters A61M25/10 takes precedence
• CPC Class Codes: A61M 25/0105 Steering means as part of the catheter or advancing means; Markers for positioning systems for detection of markers A61B
• CPC Class Codes: A61M 25/0172 Exchanging a guidewire while keeping the catheter in place
• CPC Class Codes: A61M 25/0662 Guide tubes
• CPC Class Codes: A61M 25/09 Guide wires

Abstract

A system and method is provided that is adapted to allow for rapid cannulation of a guidewire into a branch lumen extending from a main lumen in a body of a patient, and in particular into two renal arteries extending from an abdominal aorta wall. A dual lumen catheter shaft delivers first and second pre-shaped guidewires to the location of the renal arteries in the aorta, such that the first and second pre-shaped guidewires self-cannulate within the renal arteries. Additional guidewires and/or interventional devices may be incorporated into the system and method for use with the catheter shaft, or over the two pre-shaped guidewires, to meet a particular need for a particular patient or intended procedure.

Claims

1. A method for positioning guidewires into branched lumens from a main vessel, said method comprising:

providing a deployment catheter having first and second lumens and first and second guidewires positioned in said first and second lumens, respectively;

positioning the deployment catheter in the main vessel;

placing the first guidewire in a first target branched lumen and the second guidewire in a second target branched lumen; and

removing the deployment catheter from the guidewires leaving both guidewires available for over-the-wire placement of a catheter.

2. A method as in claim 1, wherein placing the guidewires comprises axially advancing and/or retracting the deployment catheter within the main vessel with the first and second guidewires extended laterally from a distal end of the deployment catheter so that at least one of the guidewires enters the target branched lumen by its spring force.

3. A method as in claim 2, wherein placing the guidewires further comprises axially advancing the guidewires relative to the deployment catheter to help position either or both guidewires in the target branched lumen.

4. A method as in claim 3, wherein placing the guidewires further comprises rotating at least one of the guidewires about its axis to help position either or both guidewires in the target branched lumen.

5. A method as in claim 1, wherein placing the guidewires comprises axially advancing the guidewires relative to the deployment catheter after the deployment catheter has been positioned in the main vessel.

6. A method as in claim 5, wherein each guidewire is advanced separately.

7. A method as in claim 5, further comprising rotating at least one guidewire about its axis to help position the guidewire in the target branched vessel.

8. A method as in claim 7, further comprising axially advancing and/or retracting the deployment catheter within the main vessel to assist in positioning the guidewire(s) in the target branched lumen(s).

9. A method as in claim 1, wherein the main lumen and branched lumens are blood vessels.

10. A method as in claim 9, wherein the main lumen is an abdominal aorta and the branched lumens are the right and left renal arteries.

11. A method as in claim 1, further comprising advancing at least one catheter over at least one of the placed guidewires and into one of the target branched lumens.

12. A method as in claim 11, further comprising advancing at least a second catheter over the other of the placed guidewires and into the other of the branched lumens.

17. A system as in claim 1, further comprising an introducer sheath.

18. A system as in claim 17, wherein the introducer sheath is short having a length in the range from 10 cm to 25 cm.

19. A system as in claim 17, wherein the introducer sheath is long having a length in the range from 20 cm to 50 cm.

13. A system for deploying catheters from a main lumen into branched lumens, such system comprising:

a deployment catheter having a proximal end, a distal end, and at least a first lumen and a second lumen therethrough;

a first guidewire having a length greater than that of the deployment catheter; and

a second guidewire having a length greater than that of the deployment catheter.

14. A system as in claim 13, wherein the deployment catheter has a first hemostatic valve at a proximal end of the first lumen and a second hemostatic valve on a proximal end of the second lumen.

15. A system as in claim 14, wherein the deployment catheter has a length in the range from 30 cm to 45 cm, a width in the range from 1 mm to 4 mm, and a diameter for each lumen in the range from 0.3 mm to 1.3 mm.

16. A system as in claim 15, wherein the first and second guidewires each have deflected distal ends with a lateral extension of at least 25 mm.