MICROCATHETER

• US 20140163367A1
• Filed: 12/07/2012
• Published: 06/12/2014
• Est. Priority Date: 12/07/2012
• Status: Abandoned Application

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Eskuri, Alan
• Application Number:
  US13/707,655
• Publication Number:
  US 20140163367A1
• Time in Patent Office: Days
• US Class Current: 600/434
• CPC Class Codes: A61B 17/1214 Coils or wires
• CPC Class Codes: A61B 2017/1205 Introduction devices
• CPC Class Codes: A61M 2025/0004 having two or more concentrically arranged tubes for forming a concentric catheter system
• CPC Class Codes: A61M 2025/0006 which can be secured against axial movement, e.g. by using a locking cuff
• CPC Class Codes: A61M 2025/0039 characterized by lumina being arranged coaxially
• CPC Class Codes: A61M 2025/0042 Microcatheters, cannula or the like having outside diameters around 1 mm or less
• CPC Class Codes: A61M 2025/0681 Systems with catheter and outer tubing, e.g. sheath, sleeve or guide tube
• CPC Class Codes: A61M 25/0045 multi-layered, e.g. coated coating materials A61L29/08
• 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 5/007 for contrast media

Abstract

A microcatheter comprising a first flexible tubular body and a second flexible tubular body is disclosed. The first flexible tubular body defines a longitudinal axis, has a proximal end, a distal end and a first lumen extending at least partially therethrough. The second flexible tubular body extends substantially parallel to the longitudinal axis along at least a portion of its length and has a second lumen extending at least partially therethrough. The first lumen and the second lumen are coaxially disposed along at least a majority of the length of the second lumen. A distal end of the first lumen extends farther distally than a distal end of the second lumen by a distance x.

Claims

1. A microcatheter comprising:

a first flexible tubular body defining a longitudinal axis, the body having a proximal end, a distal end and a first lumen extending at least partially therethrough; and

a second flexible tubular body extending substantially parallel to the longitudinal axis along at least a portion of its length and having a second lumen extending at least partially therethrough, the first lumen and the second lumen being coaxially disposed along at least a majority of the length of the second lumen, a distal end of the first lumen extends farther distally than a distal end of the second lumen by a distance x.

2. The microcatheter of claim 1, wherein the distance x is between about 2 cm and about 10 cm.

3. The microcatheter of claim 1, wherein the distance x is between about 5 cm and about 10 cm.

4. The microcatheter of claim 1, further comprising a contrast medium disposed in fluid communication with the second lumen, and wherein the second lumen is configured for delivery of the contrast medium.

5. The microcatheter of claim 1, wherein the distal end of the second flexible tubular body is tapered.

6. The microcatheter of claim 1, wherein an outer diameter of the second flexible tubular body is between about 0.060 inches and about 0.080 inches.

7. The microcatheter of claim 1, wherein the distance x is adjustable by sliding one lumen with respect to the other.

8. The microcatheter of claim 1, wherein the distal end of the second flexible tubular body includes a plurality of exit ports.

9. The microcatheter of claim 1, wherein the distal end of the second flexible tubular body includes an annular exit port.

10. A microcatheter comprising:

a first flexible tubular body defining a longitudinal axis, the body having a proximal end, a distal end and a first lumen extending at least partially therethrough; and

a second flexible tubular body extending substantially parallel to the longitudinal axis along at least a portion of its length and having a second lumen extending at least partially therethrough, a distal end of the second lumen being spaced a longitudinal distance x from a distal end of the first lumen, and wherein the distance x is adjustable.

11. The microcatheter of claim 10, wherein the distance x is adjustable from about 2 cm to about 10 cm.

12. The microcatheter of claim 10, further comprising a contrast medium disposed in fluid communication with the second lumen, and wherein the second lumen is configured for delivery of the contrast medium.

13. The microcatheter of claim 10, wherein the distance x is adjustable by sliding one lumen with respect to the other.

14. A microcatheter comprising:

a first flexible tubular body defining a longitudinal axis, the body having a proximal end, a distal end and a first lumen extending at least partially therethrough;

a second flexible tubular body extending substantially parallel to the longitudinal axis along at least a portion of its length and having a second lumen extending at least partially therethrough, the first lumen and the second lumen being coaxially disposed along at least a majority of the length of the second flexible tubular body; and

a contrast medium disposed in fluid communication with the second lumen, the second lumen being configured for delivery of the contrast medium.

15. The microcatheter of claim 14, wherein the second flexible tubular body is defined within a sheath.

16. The microcatheter of claim 15, wherein the second flexible tubular body and the sheath are made of the same material.

17. The microcatheter of claim 16, wherein the second flexible tubular body and the sheath have different durometers.

18. A microcatheter comprising:

a first flexible tubular body defining a longitudinal axis, the body having a proximal end, a distal end and a first lumen extending at least partially therethrough; and

a second flexible tubular body extending substantially parallel to the longitudinal axis along at least a portion of its length and having a second lumen extending at least partially therethrough, a distal end of the second lumen being spaced a longitudinal distance x from a distal end of the first lumen, and wherein the distance x is between about 2 cm and about 10 cm.

19. A method of accessing a vascular site, the method comprising:

providing a microcatheter comprising;

a first flexible tubular body defining a longitudinal axis, the body having a proximal end, a distal end and a first lumen extending at least partially therethrough;

a second flexible tubular body extending substantially parallel to the longitudinal axis along at least a portion of its length and having a second lumen extending at least partially therethrough, a distal end of the second flexible tubular body being spaced a longitudinal distance x from a distal end of the first flexible tubular body, and wherein the distance x is adjustable;

positioning a portion of the microcatheter within a patient;

inserting a guidewire through the first lumen; and

injecting a contrast medium through the second lumen.

20. The method of claim 19, wherein the distance x is adjustable from about 2 cm to about 10 cm.

21. The method of claim 19, wherein the first lumen and the second lumen are coaxially disposed along at least a majority of an entire length of the second lumen.