Subarachnoid spinal catheter for transporting cerebrospinal fluid

• US 20060184098A1
• Filed: 04/21/2003
• Published: 08/17/2006
• Est. Priority Date: 04/19/2002
• Status: Abandoned Application

• Current Assignee: Integra Lifesciences Corporation (Integra LifeSciences Holdings Corporation)
• Original Assignee: Integra Lifesciences Corporation (Integra LifeSciences Holdings Corporation), Neuron Therapeutics Incorporated
• Inventors: Pelura, Timothy, Frazer, Glenn =, Barnitz, James, Hesson, David
• Application Number:
  US10/543,732
• Publication Number:
  US 20060184098A1
• Time in Patent Office: Days
• US Class Current: 604/43
• CPC Class Codes: A61M 1/77 Suction-irrigation systems aspiration tips supplying fluids A61M1/85; specific for negative pressure wound therapy A61M1/92; combined with tracheal tubes A61M16/0463
• CPC Class Codes: A61M 2025/0007 Epidural catheters
• CPC Class Codes: A61M 2025/0039 characterized by lumina being arranged coaxially
• CPC Class Codes: A61M 2202/0464 Cerebrospinal fluid
• CPC Class Codes: A61M 25/003 characterized by features relating to least one lumen located at the distal part of the catheter, e.g. filters, plugs or valves catheter tips A61M25/0067
• CPC Class Codes: A61M 25/007 Side holes, e.g. their profiles or arrangements; Provisions to keep side holes unblocked
• CPC Class Codes: A61M 27/00 Drainage appliance for wounds or the like , i.e. wound drains, implanted drains negative pressure wound therapy devices A61M1/90; implements for holding wound open A61B17/02 ; middle ear drainage A61F11/202

Abstract

Provided is a multi-lumen intrathecal catheter capable of use for circulating a fluid through a portion of the spinal cord of a patient and having an insertable portion adapted for insertion into the spinal cord, comprising: a first lumen having a distal and a proximal end, the proximal end being adapted to being connected to a reservoir containing a fluid; a first fluid exchange section connected to the distal end of the first lumen having at least one inlet; a second lumen having a distal and a proximal end; and a second fluid exchange section connected to the distal and of the second lumen having at least one outlet, wherein at least one inlet and at least one outlet are offset from each other.

Claims

1. A multi-lumen intrathecal catheter capable of use for circulating a fluid through a portion of the spinal cord of a patient and having an insertable portion adapted for insertion into the spinal cord, comprising:

a first lumen having a distal and a proximal end, the proximal end being adapted to being connected to a reservoir containing a fluid;

a first fluid exchange section connected to the distal end of the first lumen having at least one inlet;

a second lumen having a distal and a proximal end; and

a second fluid exchange section connected to the distal end of the second lumen having at least one outlet,

wherein the at least one inlet and the at least one outlet are offset from each other.

2. The catheter of claim 1, wherein the offset is at least three centimeters.

3. The catheter of claim 1, wherein said first lumen has a length of 335 mm;

wherein said second lumen has a length of 215 mm; and

wherein the tip of the distal end of the first lumen and the tip of the distal end of the second lumen are offset from each other by 120 mm.

4. The catheter of claim 1, wherein the minimum cross-sectional area of the first lumen is smaller than the minimum cross-sectional area of the second lumen.

5. The catheter of claim 1, further comprising a third lumen for measuring pressure.

6. The catheter of claim 5 wherein the third lumen is a fiber optic lumen.

7. The catheter of claim 1, wherein the tip of at least one lumen is non-traumatic.

8. The catheter of claim 1, wherein the tip of at least one lumen is an open tip.

9. The catheter of claim 1, wherein the tip of at least one lumen is closed and the at least one inlet and the at least one outlet comprise a plurality of fenestrations.

10. The catheter of claim 9 wherein each fenestration is no more than 2.5 millimeters in diameter.

11. The catheter of claim 9, wherein each fenestration is no more than 1.25 millimeters in diameter

12. The catheter of claim 9, wherein each fenestration is between 0.25 and 2.5 millimeters in diameter.

13. The catheter of claim 1, wherein the diameter of the inserted portion of the catheter does not exceed two millimeters.

14. The catheter of claim 1, wherein the diameter of the inserted portion of the catheter does not exceed three millimeters.

15. The catheter of claim 1, wherein the diameter of the inserted portion of the catheter does not exceed a diameter equal to a twelve gauge needle.

16. The catheter of claim 1, wherein the diameter of the inserted portion of the catheter does not exceed a diameter equal to a fourteen gauge needle.

17. The catheter of claim 1, wherein the diameter of the inserted portion of the catheter is at least two millimeters.

18. The catheter of claim 1, wherein the diameter of the inserted portion of the catheter is between two and four millimeters.

19. A kit containing a catheter in accordance with claim 1, comprising a catheter, a spinal needle, and a guide wire.

20. A method of irrigating a portion of the subarachnoid space of a patient utilizing a catheter in accordance with claim 1, comprising:

(a) inserting the catheter into the subarachnoid space of the patient;

(b) infusing a fluid into the subarachnoid space through a first lumen of the catheter; and

(c) removing the fluid through a second lumen of the catheter.

21. The method of claim 20 wherein said irrigation of the subarachnoid space is effective to remove blood products.

22. The method of claim 20 wherein said irrigation of the subarachnoid space is effective to cool tissue contacting the subarachnoid space.

23. The method of claim 20 wherein said irrigation of the subarachnoid space is effective to deliver a therapeutic agent.