Single puncture antegrade-retrograde endovascular sheath

• US 20070016106A1
• Filed: 07/05/2006
• Published: 01/18/2007
• Est. Priority Date: 07/05/2005
• Status: Abandoned Application

• Current Assignee: Robert Mcnutt, Venkatesh Ramaiah
• Original Assignee: Robert Mcnutt, Venkatesh Ramaiah
• Inventors: Ramaiah, Venkatesh, McNutt, Robert
• Application Number:
  US11/481,575
• Publication Number:
  US 20070016106A1
• Time in Patent Office: Days
• US Class Current: 600/585
• CPC Class Codes: A61M 2025/018 Catheters having a lateral opening for guiding elongated means lateral to the catheter
• CPC Class Codes: A61M 2025/0681 Systems with catheter and outer tubing, e.g. sheath, sleeve or guide tube
• CPC Class Codes: A61M 25/01 Introducing, guiding, advancing, emplacing or holding catheters A61M25/10 takes precedence
• CPC Class Codes: A61M 25/0662 Guide tubes
• CPC Class Codes: A61M 25/09041 Mechanisms for insertion of guide wires

Abstract

The present invention provides a system for directing a first guidewire in a retrograde direction in a blood vessel and for directing a second guidewire in an antegrade direction in a blood vessel. The system includes a dual-lumen obturator having a first lumen leading to a first obturator opening and a second lumen leading to a second obturator opening, and a sheath having a first end having a first sheath opening, a second end having a second opening, a sheath lumen extending from the first end to the second end, and a third sheath opening between the first end and the second end. The first, second, and third sheath openings are in communication with the lumen. A first guidewire is directed through the first lumen and through the second sheath opening in a retrograde direction in the blood vessel, while a second guidewire is directed through the second lumen and through the third sheath opening in an antegrade direction in a blood vessel.

Claims

1. A system for directing a first guidewire in a retrograde direction in a blood vessel and for directing a second guidewire in an antegrade direction in a blood vessel, the system comprising:

(a) a dual-lumen obturator having a first lumen leading to a first obturator opening and a second lumen leading to a second obturator opening;

(b) a sheath having a first end having a first sheath opening, a second end having a second opening, a sheath lumen extending from the first end to the second end, and a third sheath opening between the first end and the second end, the first, second, and third sheath openings in communication with the lumen;

whereby the first guidewire is directed through the first lumen and through the second sheath opening in a retrograde direction in the blood vessel, and the second guidewire is directed through the second lumen and through the third sheathing opening in an antegrade direction in a blood vessel.

2. The system of claim 1 wherein a radiopaque marker is positioned on or near the second obturator opening and the third sheath opening.

3. The system of claim 1 wherein the sheath further comprises a structure downstream of the third sheath opening, the structure for directing the second guidewire in an antegrade direction.

4. The system of claim 3 wherein the structure is a balloon.

5. A dual-lumen obturator having a first obturator lumen with a first obturator opening and a second obturator lumen with a second obturator opening, the second opening being antegrade to the first opening.

6. A sheath having a first end, a second end, a lumen extending between the first end and the second end and an opening between the first end and the second end, the opening in communication with the lumen.

7. The system of claim 6 wherein the sheath further comprises a structure downstream of the opening, the structure for directing a guidewire in an antegrade direction.

8. The system of claim 7 wherein the structure is a balloon.