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1. (WO1998052639) CATHETER SYSTEM
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WHAT IS CLAIMED:
1. An arterial cannula system for transporting blood from an extracorporeal pump to a patient's femoral artery and aorta, the cannula system comprising:
a first cannula portion having a proximal portion, a distal portion, an intermediate portion between the proximal and distal portions, a first lumen having an opening in the distal portion to deliver cardioplegic fluid, an expandable occluding member disposed at the distal portion, a second lumen communicating with the expandable member to inflate the expandable member to occlude blood flow, and a third lumen extending from the proximal portion to the intermediate portion for passage of blood from the extracorporeal pump to the femoral artery, the first cannula portion configured for insertion through the femoral artery; and
a second cannula portion having a distal portion and an opening in the distal portion, the second cannula portion configured for insertion into the subclavian artery so the opening in the distal portion is in communication with the aorta, and a lumen extending through the second cannula portion in communication with the opening for passage of blood from the extracorporeal pump to the aorta.

2. An arterial cannula system according to claim 1, further comprising a plurality of openings in the distal portion of the second cannula portion to provide a plurality of ports for passage of blood to the aorta.

3. An arterial cannula system according to claim 2, wherein the distal tip of the first cannula portion is configured for insertion adjacent the left ventricle to enable venting of the ventricle through the first lumen.

4. An arterial cannula system according to claim 1, wherein the first cannula portion has an outer diameter ranging from about .1 inches to about .4 inches.

5. An arterial cannula system according to claim 1, wherein the second cannula portion has- an outer diameter ranging from about .1 inches to about .4 inches.

6. An arterial ca nula system according to claim 1, further comprising a Y connector having first and second legs for mounting the first and second cannula portions, respectively.

7. An arterial cannula system according to claim 6, further comprising a tube connecting the Y connector to the extracorporeal pump.

8. An arterial cannula system according to claim 1, wherein the first cannula portion has a first diameter at the proximal portion and a second diameter at the distal portion, the first diameter being greater than the second diameter.

9. An arterial cannula system according to claim 1, wherein the second cannula portion has a reduced outer diameter section.

10. An arterial cannula system according to claim 1, wherein a distalmost tip of the first cannula portion does not extend distally of the expandable member.

11. An arterial cannula system according to claim 1, further comprising a plurality of openings in the intermediate portion of the first cannula portion to provide a plurality of ports for the passage of blood to the femoral artery.

12. An arterial cannula system according to claim 11, further comprising a plurality of openings in the distal portion of the second cannula portion to provide a plurality of ports for the passage of blood to the aorta.

13. A catheter system comprising:
an arterial catheter having a proximal portion adapted to be connected to an extracorporeal pump and a bifurcated portion distal of the proximal portion and defining a first catheter dimensioned for insertion through a femoral artery to supply blood to the femoral artery and a second catheter dimensioned for insertion through a brachial artery and subclavian artery to supply blood to the aorta, the first catheter including an occluding member at a distal portion to block blood flow to the left ventricle and at least one opening to supply cardioplegic fluid to the left ventricle.

14. A catheter system according to claim 13, wherein the first catheter has a first port spaced from the distal portion and in fluid communication with the extracorporeal pump to supply blood to the femoral artery.

15. A catheter system according to claim 14, wherein the distalmost tip of the first catheter does not protrude beyond the occluding member.

16. A catheter system according to claim 13, wherein the occluding member is an inflatable balloon and the first catheter includes a lumen communicating with the balloon for the passage of fluid to inflate the balloon.

17. A catheter system according to claim 13, further comprising a venous catheter adapted to be connected to the extracorporeal pump to transport blood from the patient's body to the pump.

18. A catheter system according to claim 17, wherein the venous catheter is configured for insertion through the femoral vein.

19. A catheter system according to claim 18, further comprising an oxygenator interposed between the venous catheter and the arterial catheter.

20. A catheter comprising:
a proximal portion adapted to be connected to an extracorporeal pump to transport blood from the pump and a bifurcated portion distal of the proximal portion and defining first and second cannulas, the first cannula having at least one opening to supply blood to a lower region of the body and further having an occluding member to block the flow of blood to a second region of the body, the second cannula having at least one opening to supply blood to an upper region of the body, the at least one opening in the first and second cannulas being in fluid communication with a passageway in the proximal portion of the catheter.

21. A method for supplying blood to a patient from an extracorporeal blood pump comprising:
a) inserting a first cannula percutaneously through a femoral artery of the patient, the first cannula communicating at a proximal end with the extracorporeal pump;
b) transporting blood through a first lumen in the first cannula to supply blood to the femoral artery;
c) supplying cardioplegic fluid to a left ventricle through a second lumen in the first cannula;
d) inserting a second cannula percutaneously through the brachial artery and a subclavian artery of the patient to access the aorta; and
e) transporting blood through a first lumen in the second cannula to supply blood to the aorta.

22. A method for supplying blood to a patient from an extracorporeal blood pump according to claim 21, further comprising the step of providing an occluding member on a distal portion of the first cannula to stop blood flow to the left ventricle.

23. A method for supplying blood to a patient from an extracorporeal blood pump according to claim 22, further comprising the step of inserting a venous catheter percutaneously through a femoral vein of the patient to withdraw blood from the venous side and transport it to the extracorporeal pump.

24. A method for supplying blood to a patient from an extracorporeal blood pump according to claim 23, further comprising the step of oxygenating the blood outside the body.

25. A method of supplying blood to the femoral artery and the aorta during a surgical procedure comprising the steps of:
a) inserting a first arterial catheter percutaneously at a first location to supply blood to the femoral artery;
b) inflating an inflatable member on the first catheter to occlude blood flow to the heart; and
c) inserting a second arterial catheter percutaneously at a second location to supply blood to the aorta.

26. A method of supplying blood to the femoral artery and the aorta during a surgical procedure according to claim 25, further comprising the step of supplying cardioplegic fluid to the left ventricle through a lumen in the first arterial catheter.

27. A method of supplying blood to the femoral artery and the aorta during a surgical procedure according to claim 26, wherein the step of supplying blood to the femoral artery includes the step of supplying blood through at least one opening in an intermediate portion of the first arterial catheter.