FLUID EXCHANGE SYSTEM FOR CONTROLLED AND LOCALIZED IRRIGATION AND ASPIRATION

• US 20060276743A1
• Filed: 07/18/2006
• Published: 12/07/2006
• Est. Priority Date: 07/17/2001
• Status: Active Grant

• Current Assignee: Chine, LLC
• Original Assignee: Kerberos Proximal Solutions, Inc. (Medtronic Plc)
• Inventors: COURTNEY, BRIAN K., GOFF, THOMAS G., MacMAHON, JOHN M.
• Granted Patent: US 8,562,555 B2
• Time in Patent Office: Days
• US Class Current: 604/28
• CPC Class Codes: A61M 1/67 Containers incorporating a piston-type member to create suction, e.g. syringes cupping glasses A61M1/08; with a flexible member creating suction A61M1/68
• CPC Class Codes: A61M 1/774 Handpieces specially adapted for providing suction as well as irrigation, either simultaneously or independently
• CPC Class Codes: A61M 1/81 Piston pumps, e.g. syringes

Abstract

The control of fluid introduction into and out of body conduits such as vessels, is of great concern in medicine. As the development of more particular treatments to vessels and organs continues it is apparent that controlled introduction and removal of fluids is necessary. Fluid delivery and removal from such sites, usually referred to as irrigation and aspiration, using fluid exchange devices that control also need to be considerate of potential volume and/or pressure in the vessel or organ are described together with catheter and lumen configurations to achieve the fluid exchange. The devices include several electrically or mechanically controlled embodiments and produce both controlled and localized flow with defined volume exchange ratios for fluid management. The applications in medicine include diagnostic, therapeutic, imaging, and uses for the introduction or removal of concentrations of emboli within body cavities.

Claims

1. A method for disrupting a blockage in a patient'"'"'s vasculature, said method comprising:

advancing a catheter within the vasculature to a proximal side of the blockage within a blood vessel;

delivering an irrigant fluid through an irrigation lumen in the catheter to create a localized turbulence within the blood vessel which disrupts the blockage; and

aspirating the disrupted blockage through an aspiration lumen in the catheter;

wherein a region around the blockage is not isolated.

2. A method as in claim 1, wherein the blockage is a complete blockage.

3. A method as in claim 2, wherein the complete blockage is a total chronic occlusion.

4. A method as in claim 1, wherein the blockage is not complete.

5. A method as in claim 1, wherein the blockage comprises thrombus.

6. A method as in claim 1, wherein the irrigant fluid comprises a thrombolytic agent.

7. A method as in claim 1, wherein delivering the irrigant and aspirating the disrupted blockage are performed simultaneously.

8. A method as in claim 7, wherein simultaneous delivering and aspirating comprises activating a trigger of a fluid exchange apparatus connected to the irrigation lumen and the aspiration lumen of the catheter.

9. A method as in claim 8, wherein the irrigant fluid volume and aspiration volume have a ratio between 1:

2 and 2;

1.

10. A method as in claim 9, wherein the ratio is approximately 1:

1.