Therapeutic method of treatment of alzheimer's disease

• US 7,189,222 B2
• Filed: 06/01/2001
• Issued: 03/13/2007
• Est. Priority Date: 04/30/1996
• Status: Expired due to Fees

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: Elsberry, Dennis D.
• Primary Examiner(s): Casler; Brian L.
• Assistant Examiner(s): Thissell; Jeremy
• Application Number:
  US09/872,698
• Publication Number:
  US 20010027309A1
• Time in Patent Office: 2,111 Days
• Field of Search: 604/500, 604/560, 604/508, 604/510, 604/164.01, 604/164.13, 604/171, 604/131, 604/151, 264/230, 264/255, 264/343
• US Class Current: 604/506
• CPC Class Codes: A61M 2025/0057 Catheters delivering medicament other than through a conventional lumen, e.g. porous walls or hydrogel coatings
• CPC Class Codes: A61M 25/0068 Static characteristics of the catheter tip, e.g. shape, atraumatic tip, curved tip or tip structure
• CPC Class Codes: A61M 25/0069 Tip not integral with tube
• CPC Class Codes: A61M 25/007 Side holes, e.g. their profiles or arrangements; Provisions to keep side holes unblocked

Abstract

A method and apparatus for treating Alzheimer'"'"'s disease is disclosed. The method comprises delivering indomethacin or nonsteroidal anti-inflammatory agents having cyclooxygenase inhibitor action directly to the hippocampus or the lateral ventricle through an implanted catheter. The catheter has a flexible distal end that is implanted directly in the hippocampus or lateral ventricle as the preferred embodiment. The distal end has either a porous tip or a closed end. Where the distal end is closed, or a plurality of elution holes are present indomethacin is delivered to the hippocampus or lateral ventricle through either the porous tip or the elution holes. The catheter is part of a system for delivering indomethacin or nonsteroidal anti-inflammatory agents having cyclooxygenase inhibitor action to the hippocampus or lateral ventricle that includes a pump coupled to the catheter for delivering the indomethacin or nonsteroidal anti-inflammatory agents having cyclooxygenase inhibitor action through the catheter to the hippocampus or lateral ventricle.

Claims

1. A method of delivering indomethacin to a selected site within a hippocampus or lateral ventricle comprising steps of:

providing a catheter having a first tubular portion that has a first tubular portion lumen and a second tubular portion partially disposed within the first tubular portion lumen, wherein the step of providing a catheter having a first tubular portion that has a first tubular portion lumen includes the step of;

making the first tubular portion of a material that increases in diameter when heated;

adjusting the length of the second tubular portion extending from the first tubular portion lumen to conform to the dimensions of a selected site in a hippocampus or lateral ventricle, wherein the step of adjusting the length of the second tubular portion includes the steps of;

heating the first tubular portion until the diameter of the first tubular portion lumen increases in diameter a sufficient amount to enable relative sliding movement between the first tubular portion and the second tubular portion;

sliding the second tubular portion in the first tubular portion lumen relative to the first tubular portion to provide a preselected length of the second tubular portion extending beyond the end of the first tubular portion; and

cooling the first tubular portion until the first tubular portion and the second tubular portion are no longer capable of relative sliding movement;

placing the catheter in the hippocampus or lateral ventricle so that the second tubular portion is placed at the selected site in the hippocampus or lateral ventricle;

providing a source of indomethacin;

coupling the catheter and the source of indomethacin to a pump for delivering indomethacin from the source of indomethacin to the hippocampus through the catheter; and

actuating the pump to delivery the indomethacin to the hippocampus or lateral ventricle.

2. The method according to claim 1 wherein the step of adjusting the length of the second tubular portion extending from the first tubular portion lumen to conform to the dimensions of a selected site in a hippocampus or lateral ventricle includes:

determining a desired configuration of catheter by reference to an individual patient.

3. The method of claim 2 further comprising the step of implanting the catheter in the patient.

4. The method of claim 1 further comprising the step of implanting the catheter in the patient.

5. A method of delivering indomethacin to a selected site within a hippocampus or lateral ventricle comprising steps of:

providing a catheter having a first tubular portion that has a first tubular portion lumen and a second tubular portion partially disposed within the first tubular portion lumen, wherein the step of providing a catheter having a first tubular portion that has a first tubular portion lumen includes the step of;

making the first tubular portion of a material that increases in diameter when exposed to a solvent;

adjusting the length of the second tubular portion extending from the first tubular portion lumen to conform to the dimensions of a selected site in a hippocampus or lateral ventricle, wherein the step of adjusting the length of the second tubular portion includes the steps of;

exposing the first tubular portion to a solvent that increases the diameter of the first tubular portion lumen a sufficient amount to permit relative sliding movement of the second tubular portion in the first tubular portion lumen;

sliding the second tubular portion in the first tubular portion lumen to obtain a preselected length of the second tubular portion extending distally beyond the distal end of the first tubular portion; and

ceasing to expose the first tubular portion to the solvent whereby the diameter of the first tubular portion lumen decreases until relative sliding movement between the first tubular portion and the second tubular portion is prevented;

placing the catheter in the hippocampus or lateral ventricle so that the second tubular portion is placed at the selected site in the hippocampus or lateral ventricle;

providing a source of indomethacin;

coupling the catheter and the source of indomethacin to a pump for delivering indomethacin from the source of indomethacin to the hippocampus through the catheter; and

actuating the pump to delivery the indomethacin to the hippocampus or lateral ventricle.

6. The method according to claim 5 wherein the step of adjusting the length of the second tubular portion extending from the first tubular portion lumen to conform to the dimensions of a selected site in a hippocampus or lateral ventricle includes:

determining a desired configuration of catheter by reference to an individual patient.

7. The method of claim 6 further comprising the step of implanting the catheter in the patient.

8. The method of claim 5 further comprising the step of implanting the catheter in the patient.

9. A method of delivering an anti-inflammatory agent having cyclooxygenase inhibitor action to a selected site within a hippocampus or lateral ventricle comprising steps of:

providing a catheter having a first tubular portion tat has a first tubular portion lumen and a second tubular portion partially disposed within the first tubular portion lumen, wherein the step of providing a catheter having a first tubular portion that has a first tubular portion lumen includes the step of;

making the first tubular portion of a material that increases in diameter when heated;

adjusting the length of the second tubular portion extending from the first tubular portion lumen to conform to the dimensions of a selected site in a hippocampus or lateral ventricle, wherein the step of adjusting the length of the second tubular portion includes the steps of;

heating the first tubular portion until the diameter of the first tubular portion lumen increases in diameter a sufficient amount to enable relative sliding movement between the first tubular portion and the second tubular portion;

sliding the second tubular portion in the first tubular portion lumen relative to the first tubular portion to provide a preselected length of die second tubular portion extending beyond the end of the first tubular portion; and

cooling the first tubular portion until the first tubular pardon and the second tubular portion are no longer capable of relative sliding movement;

placing the catheter in the hippocampus or lateral ventricle so that the second tubular portion is placed at the selected site in the hippocampus or lateral ventricle;

providing a source of the anti-inflammatory agent;

coupling the catheter and the source of the anti-inflammatory agent to a pump for delivering the anti-inflammatory agent from the source of the anti-inflammatory agent to the hippocampus through the catheter; and

actuating the pump to delivery the the anti-inflammatory agent to the hippocampus or lateral ventricle.

10. The method of claim 9 wherein anti-inflammatory agent is a non-steriodal anti-inflammatory agent.

11. A method of delivering an anti-inflammatory agent having cyclooxygenase inhibitor action to a selected site within a hippocampus or lateral ventricle comprising steps of:

providing a catheter having a first tubular portion that has a first tubular portion lumen and a second tubular portion partially disposed within the first tubular portion lumen, wherein the step of providing a catheter having a first tubular portion that has a first tubular portion lumen includes the step of;

making the first tubular portion of a material that increases in diameter when exposed to a solvent;

adjusting the length of the second tabular portion extending from the first tubular portion lumen to conform to the dimensions of a selected site in a hippocampus or lateral ventricle, wherein to step of adjusting the length of the second tubular pardon includes the steps of;

exposing the first tubular portion to a solvent that increases the diameter of the first tubular portion lumen a sufficient amount to permit relative sliding movement of the second tubular portion in the first tubular portion lumen;

sliding the second tubular portion in the first tubular portion lumen to obtain a preselected length of the second tubular portion extending distally beyond the distal end of the first tubular portion; and

ceasing to expose the first tubular portion to the solvent whereby the diameter of the first tubular portion lumen decreases until relative sliding movement between the first tubular portion and the second tubular portion is prevented;

placing the catheter in the hippocampus or lateral ventricle so that the second tubular portion is placed at the selected site in the hippocampus or lateral ventricle;

providing a source of the anti-inflammatory agent;

coupling the catheter and the source of the anti-inflammatory agent to a pump for delivering the and-inflammatory agent from the source of the anti-inflammatory agent to the hippocampus through the catheter; and

actuating the pump to delivery the the anti-inflammatory agent to the hippocampus or lateral ventricle.

12. The method of claim 11 wherein anti-inflammatory agent is a non-steriodal anti-inflammatory agent.