MR-compatible devices

• US 7,048,716 B1
• Filed: 11/24/1999
• Issued: 05/23/2006
• Est. Priority Date: 05/15/1997
• Status: Expired due to Fees

• Current Assignee: Board of Trustees of the Leland Stanford Junior University (Stanford Management Co.), Stanford University, University of Minnesota
• Original Assignee: Stanford University
• Inventors: Truwit, Charles L., Kucharczyk, John, Moseley, Michael E., Liu, Haiying
• Primary Examiner(s): Sirmons, Kevin C.
• Assistant Examiner(s): Han, Mark K
• Application Number:
  US09/448,720
• Time in Patent Office: 2,372 Days
• Field of Search: 604/20, 604/21, 604/93.01, 604151-155, 604/96.01, 604/264, 60416401-16409, 600410-412, 600/420, 600422-424, 600431-433
• US Class Current: 604/164.01
• CPC Class Codes: A61M 25/0043 characterised by structural features
• CPC Class Codes: A61M 25/0108 using radio-opaque or ultrasound markers
• CPC Class Codes: A61M 25/0127 Magnetic means; Magnetic markers
• CPC Class Codes: G01R 33/285 Invasive instruments, e.g. catheters or biopsy needles, specially adapted for tracking, guiding or visualization by NMR

Abstract

A catheter is used for medical treatments within an organism. The catheter comprises at least one lumen. Within the at least one lumen are at least two microcatheters, with at least one of the at least two microcatheters being connected to a source of liquid material to be delivered to the organism and another of the at least two microcatheters being connected to a system capable of effecting a medical treatment other than delivery of the liquid.

Claims

1. A catheter for use within cerebral blood vessels of an organism, the catheter comprising at least one lumen, and within the at least one lumen at least two microcatheters, with at least one of the at least two microcatheters being connected to a source of liquid material to be delivered to the organism and another of the at least two microcatheters being connected to a system capable of effecting a medical treatment other than delivery of the liquid.

2. The catheter of claim 1 wherein the medical treatment other then delivery of the liquid comprises stimulation of natural activities.

3. The catheter of claim 2 wherein at least one opposed pair of microcoils is present on the catheter.

4. The catheter of claim 1 wherein the medical treatment other then delivery of the liquid comprises stimulation of natural activities of chemical producing systems.

5. The catheter of claim 4 wherein at least one opposed pair of microcoils is present on the catheter.

6. The catheter of claim 4 wherein electronic circuitry is located within the catheter.

7. The catheter of claim 4 wherein at least one opposed pair of microcoils is present on the catheter.

8. The catheter of claim 1 wherein the medical treatment other then delivery of the liquid comprises removal of deposits of materials.

9. The catheter of claim 8 wherein the at least two microcatheters pass within the lumen, and exit holes are provided in the catheter for the at least two microcatheters.

10. The catheter of claim 9 wherein deflectors are present within the lumen for directing the at least two microcatheters through the holes.

11. The catheter of claim 1 wherein at least one opposed pair of microcoils is present on the catheter.

12. The catheter of claim 11 wherein electronic circuitry is located within the catheter.

13. The catheter of claim 1 wherein electronic circuitry is located within the catheter.

14. The catheter of claim 1 wherein the at least two microcatheters pass within the lumen, and exit holes are provided in the catheter for the at least two microcatheters.

15. The catheter of claim 14 wherein deflectors are present within the lumen for directing the at least two microcatheters through the holes.

16. The catheter of claim 1 wherein the medical treatment other than liquid delivery comprises an endovascularly therapeutic application.

17. The catheter of claim 1 wherein the medical treatment other than liquid delivery comprises a pressure or flow measurement system.

18. The catheter of claim 1 wherein the medical treatment other than liquid delivery comprises a physiology monitoring system.

19. The catheter of claim 1 wherein the medical treatment other than liquid delivery comprises electrical stimulation.

20. The catheter of claim 1 wherein the medical treatment other than liquid delivery comprises dispersing of deposits.

21. The catheter of claim 1 also containing at least one optical fiber.

22. The catheter of claim 1 wherein the medical treatment other than liquid delivery comprises a balloon catheter.

23. The catheter of claim 1 wherein the medical treatment other than liquid delivery comprises an ablation system.

24. The catheter of claim 1 wherein the medical treatment other than liquid delivery comprises a cytotoxic irradiation system.

25. The catheter of claim 1 wherein the medical treatment other than liquid delivery comprises an electrophysiological monitoring system.

26. The catheter of claim 1 wherein electronic circuitry is located external to the catheter.

27. The catheter of claim 1 wherein the medical treatment other than liquid delivery comprises a diagnostic treatment.

28. The catheter of claim 1 wherein the medical treatment other than liquid delivery comprises microwave heating and the catheter comprises a microwave coil.

29. The catheter of claim 1 wherein the medical treatment other than liquid delivery comprises a liquid removal system.

30. The catheter of claim 1 wherein the medical treatment other than liquid delivery comprises a heating system.

31. A catheter for use within cerebral blood vessels of an organism, the catheter comprising at least one lumen, and within the at least one lumen at least two microcatheters, and a deflector within the lumen for deflecting microcatheters towards exit ports within the catheter.

32. A catheter for use within cerebral blood vessels of an organism, the catheter comprising at least one lumen, and within the at least one lumen at least two microcatheters, with at least one of the at least two microcatheters being connected to a source of liquid material to be delivered to the organism and another of the at least two microcatheters being connected to a system capable of effecting a medical treatment other than delivery of the liquid comprising stimulation of natural activities, wherein at least one opposed pair of microcoils is present on the catheter, and electronic circuitry is located within the catheter.