System and method for removing undesirable material within a circulatory system utilizing during a surgical procedure

Patent metadata

Field	Value
Publication number	US-9402938-B2
Application number	US-201414250486-A
Country	US
Kind code	B2
Filing date	Apr 11, 2014
Priority date	Aug 6, 2008
Publication date	Aug 2, 2016
Grant date	Aug 2, 2016

Abstract

A method for capturing dislodged vegetative growth during a surgical procedure is provided. The method includes maneuvering, into a circulatory system, a first cannula having a distal end and an opposing proximal end, such that the first cannula is positioned to capture the vegetative growth en bloc. A second cannula is positioned in fluid communication with the first cannula, such that a distal end of the second cannula is situated in spaced relation to the distal end of the cannula. A suction force is provided through the distal end of the first cannula so as to capture the vegetative growth. Fluid removed by the suction force is reinfused through the distal end of the second cannula. Subsequent to becoming dislodged, the vegetative growth is captured by the first cannula. A method for capturing a vegetative growth during removal of a pacemaker lead is also provided.

First claim

What is being claimed:

1. A system for capturing undesirable material during an interventional procedure comprising:
a first cannula having a distal end and proximal end, the distal end is sized such that it is able to capture the undesirable material that has become dislodged during a surgical procedure;
a second cannula having a distal end and proximal end, the second cannula is in in fluid communication with the first cannula, such that a distal end of the second cannula is in a spaced relation to the distal end of the first cannula;
a pump capable of simultaneously creating a suction force and a driving force, the distal end of the first cannula is sized such that it is able to capture any undesirable material that has become dislodged during the surgical procedure, and the distal end of the second cannula is sized such that driving force is through the distal end of the second cannula.

2. The system as set forth in claim 1 wherein, in the distal end of the first cannula is located in one of a medium-sized blood vessel, a large-sized blood vessel, or a heart chamber.

3. The system as set forth in claim 1 wherein the distal end of the first cannula has an expandable member, the expandable member is able to expand from a first diameter to a relatively larger second diameter.

4. The system as set forth in claim 1 wherein the distal end of the second cannula and the distal end of the first cannula are sized such that they are able to be placed within the same blood vessel.

5. The system as set forth in claim 1 further comprising a balloon catheter extending beyond the distal end of the first cannula.

6. The system as set forth in claim 5 wherein the balloon catheter dislodges the undesirable material from within the patient's body and the undesirable material is suction through the distal end of the first cannula.

7. The system as set forth in claim 5 further comprising a port located near the proximal end of the first cannula.

8. A method as set forth in claim 7 wherein the balloon catheter enters through the port and extends distally beyond the distal most end of the first cannula.

9. The system as set forth in claim 1 further comprising a procedure catheter extended into the circulatory system from the distal end of the first or second cannula.

10. The system as set forth in claim 1 further comprising a filter in fluid communication with the first cannula the pump, and the second cannula.

11. The system as set forth in claim 1 wherein the undesirable material is suctioned through the distal end of the first cannula without substantial fragmentation.

12. The system as set forth in claim 1 further comprising a port located near the proximal end of the first cannula.

13. A system for capturing undesirable material during a surgical procedure, the method comprising:
a first cannula having a pathway extending therethrough, an expandable distal end, and an opposing proximal end, the first cannula designed for maneuvering within a vessel to a site of interest, such that when expanded a size difference between the distal end and the pathway provides that the undesirable material can be captured substantially en bloc through the distal end and removed along the first cannula away from the site;
a second cannula having a distal end and proximal end, the second cannula is in in fluid communication with the first cannula, such that a distal end of the second cannula is in a spaced relation to the distal end of the first cannula;
a pump capable of simultaneously creating a suction force through the distal end of the first cannula and a driving force through the distal end of the second cannula.

14. The system as set forth in claim 13 wherein, in the distal end of the first cannula is located in one of a medium-sized blood vessel, a large-sized blood vessel, or a heart chamber.

15. The system as set forth in claim 13 further comprising extending a catheter into the vessel from the distal end of the first or second cannula.

16. The system as set forth in claim 13 wherein the expandable distal end is expanded so the size difference between the distal end and the pathway provides a ratio sufficient to provide a vortex flow to be generated through the distal end.

17. The system as set forth in claim 13 wherein the distal end of the second cannula and the distal end of the first cannula are sized such that they are able to be placed within the same blood vessel.

18. The system as set forth in claim 13 further comprising a balloon catheter extending beyond the distal end of the first cannula.

19. The system as set forth in claim 18 wherein the balloon catheter dislodges the undesirable material from within the patient's body and the undesirable material is suction through the distal end of the first cannula.

20. The system as set forth in claim 19 further comprising a port located near the proximal end of the first cannula.

21. The system as set forth in claim 20 wherein the balloon catheter enters through the port and extends distally beyond the distal most end of the first cannula.

22. The system as set forth in claim 13 further comprising a procedure catheter extended into the circulatory system from the distal end of the first or second cannula.

23. The system as set forth in claim 13 further comprising a filter in fluid communication with the first cannula, the pump, and the second cannula.

24. The system as set forth in claim 13 wherein the undesirable material is suctioned through the distal end of the first cannula without substantial fragmentation.

Assignees

• Angiodynamics Inc
• Angio Dynamics Inc

Inventors

• Aklog Lishan
• Glennon Michael J

Classifications

• A61B2017/22079

  with suction of debris · CPC title

• A61M1/3621

  Extra-corporeal blood circuits (single-needle circuits A61M1/30) · CPC title

• A61B2017/2215

  having an open distal end · CPC title

• A61M2205/7545

  for solid matter, e.g. microaggregates · CPC title

• A61B17/22032

  having inflatable gripping elements (balloon catheters A61M25/10) · CPC title