System and Method of Branch Vessel Marking

• US 20070244394A1
• Filed: 04/18/2006
• Published: 10/18/2007
• Est. Priority Date: 04/18/2006
• Status: Abandoned Application

• Current Assignee: Medtronic Vascular, Inc. (Medtronic Plc)
• Original Assignee: Medtronic Vascular, Inc. (Medtronic Plc)
• Inventors: Greenan, Trevor
• Application Number:
  US11/379,118
• Publication Number:
  US 20070244394A1
• Time in Patent Office: Days
• US Class Current: 600/470
• CPC Class Codes: A61B 5/06 Devices, other than using radiation, for detecting or locating foreign bodies for removing same A61B17/50 ; determining position of probes within or on the body of the patient
• CPC Class Codes: A61B 5/062 using magnetic field
• CPC Class Codes: A61B 5/6853 with a balloon

Abstract

A system and method of branch vessel marking including a branch vessel marking system for a branch vessel off a main vessel, the branch vessel having an ostium and a branch vessel centerline, the system having a catheter 105 and a balloon 110 operably attached to the catheter 105. The balloon 110 has a proximal portion 111 and a distal portion 109, a long axis 112, and a coil 114 disposed on the long axis 112. Differential expansion of the distal portion 109 relative to the proximal portion 111 when the distal portion 109 is inflated in the branch vessel and the proximal portion 111 is inflated in the main vessel indicates the ostium of the branch vessel and locates the coil 114 on the branch vessel centerline.

Claims

1. A branch vessel marking system for a branch vessel off a main vessel, the branch vessel having an ostium and a branch vessel centerline, comprising:

a catheter 105; and

a balloon 110 operably attached to the catheter 105, the balloon 110 having a proximal portion 111 and a distal portion 109, a long axis 112, and a coil 114 disposed on the long axis 112;

wherein differential expansion of the distal portion 109 relative to the proximal portion 111 when the distal portion 109 is inflated in the branch vessel and the proximal portion 111 is inflated in the main vessel indicates the ostium of the branch vessel and locates the coil 114 on the branch vessel centerline.

2. The system of claim 1 wherein the differential expansion occurs at a low inflation pressure.

3. The system of claim 1 wherein the balloon is selected from the group consisting of a uniform balloon, a non-uniform balloon, and a dual balloon.

4. The system of claim 1 further comprising a radiopaque marker located at the coil.

5. The system of claim 1 wherein the balloon 110 has a distal end 118 and the coil 114 is a first coil, further comprising a second coil 116 disposed on the long axis 112 between the first coil and the distal end 118.

6. The system of claim 1 wherein the balloon 110 is made of a material selected from the group consisting of polyethylene, polyethylene terephthalate (PET), nylon, and polyether-block co-polyamide polymers.

7. A method of marking a branch vessel having an ostium comprising:

providing a balloon having a distal end and a long axis, a coil being disposed on the long axis 200;

advancing the distal end into the branch vessel 202;

inflating the balloon to form a proximal portion having a contacting edge 204;

identifying the ostium from the contacting edge 206;

determining whether the coil is within a desired distance of the ostium 208; and

recording a location of the coil with an electromagnetic detection system when the coil is within the desired distance of the ostium 210.

8. The method of claim 7 further comprising:

deflating the balloon when the coil is not within the desired distance of the ostium 212; and

positioning the coil at the ostium 214.

9. The method of claim 7 wherein the inflating comprises inflating the balloon with a low inflation pressure.

10. The method of claim 7 further comprising correlating the location of the coil recorded with the electromagnetic detection system and an indicated ostium position on a fluoroscopic image 216.

11. The method of claim 7 further comprising:

deflating the balloon;

advancing the distal end further into the branch vessel;

inflating the balloon; and

recording a second location of the coil with the electromagnetic detection system to locate a branch vessel centerline.

12. The method of claim 7 further comprising recording a plurality of coil locations over a time period.

13. The method of claim 12 further comprising:

recording a body function over the time period; and

correlating the plurality of coil locations with the body function;

14. The method of claim 13 wherein the body function is selected from the group consisting of cardiac cycles and respiratory cycles.

15. The method of claim 7 wherein the inflating comprises inflating the balloon with a contrast medium, and the determining whether the coil is within a desired distance of the ostium 208 comprises determining whether the coil is within the desired distance of the ostium visually from a fluoroscopic image.

16. The method of claim 7 wherein the branch vessel is a renal artery and the main vessel is an abdominal aorta.

17. The method of claim 7 wherein the coil is a first coil, and the balloon further comprises a second coil disposed on the long axis between the first coil and the distal end, further comprising:

recording a second coil location of the second coil with the electromagnetic detection system to locate a branch vessel centerline.

18. A system for marking a branch vessel having an ostium comprising:

a balloon having a distal end and a long axis, a coil being disposed on the long axis;

means for advancing the distal end into the branch vessel;

means for inflating the balloon to form an expanded portion having a contacting edge;

means for deducing the ostium from the contacting edge;

means for determining whether the coil is within a desired distance of the ostium; and

means for recording a location of the coil when the coil is within the desired distance of the ostium.

19. The system of claim 18 further comprising:

means for deflating the balloon when the coil is not within the desired distance of the ostium; and

means for positioning the coil at the ostium.

20. The system of claim 18 further comprising means for correlating the location of the coil and an indicated ostium on a fluoroscopic image.

21. The system of claim 18 further comprising:

means for deflating the balloon;

means for advancing the distal end further into the branch vessel;

means for inflating the balloon; and

means for recording a second location of the coil to locate a branch vessel centerline.

22. The system of claim 18 further comprising means for recording a plurality of coil locations over a time period.

23. The method of claim 22 further comprising:

means for recording a body function over the time period; and

means for correlating the plurality of coil locations with the body function;

24. The method of claim 23 wherein the body function is selected from the group consisting of cardiac cycles and respiratory cycles.

25. The system of claim 18 wherein the coil is a first coil, and the balloon further comprises a second coil disposed on the long axis between the first coil and the distal end, further comprising:

means for recording a second coil location of the second coil to locate a branch vessel centerline.