Methods, devices and systems for counterpulsation of blood flow to and from the circulatory system

• US 20050096496A1
• Filed: 11/01/2004
• Published: 05/05/2005
• Est. Priority Date: 10/31/2003
• Status: Active Grant

• Current Assignee: Paul A. Spence
• Original Assignee: Paul A. Spence
• Inventors: Spence, Paul A.
• Granted Patent: US 7,273,446 B2
• Time in Patent Office: Days
• US Class Current: 600/16
• CPC Class Codes: A61M 2205/8243 by induction
• CPC Class Codes: A61M 60/148 in line with a blood vessel using resection or like techniques, e.g. permanent endovascular heart assist devices
• CPC Class Codes: A61M 60/152 branching on and drawing blood from a blood vessel
• CPC Class Codes: A61M 60/274 the inlet and outlet being the same, e.g. para-aortic counter-pulsation blood pumps
• CPC Class Codes: A61M 60/432 with diastole or systole switching by stopping or reversing the blood pump operating at a much higher cyclical speed than the heart beat
• CPC Class Codes: A61M 60/462 Electromagnetic force
• CPC Class Codes: A61M 60/562 for making blood flow pulsatile in blood pumps that do not intrinsically create pulsatile flow
• CPC Class Codes: A61M 60/869 Compliance chambers containing a gas or liquid other than blood to compensate volume variations of a blood chamber
• CPC Class Codes: A61M 60/873 specially adapted for wireless or transcutaneous energy transfer [TET], e.g. inductive charging

Abstract

Counterpulsation methods and systems for assisting the heart of a patient involve, for example, coordinating the operation of a pulsatile pump to suction blood from an artery through a first conduit while the heart is in systole and expel the blood into the first conduit and the artery while the heart is in diastole.

Claims

1. A counterpulsation method of assisting the heart of a patient using a pump assist system, the method comprising:

coupling a first conduit to the arterial system of the patient without entering the chest cavity or abdominal cavity of the patient,

connecting a pulsatile pump to the first conduit,

implanting the pump in the patient without entering the chest cavity or abdominal cavity of the patient,

connecting a power supply to the pump,

coordinating the operation of the pulsatile pump to suction blood from the arterial system through the first conduit while the heart is in systole and expel the blood into the first conduit and the arterial system while the heart is in diastole.

2. The method of claim 1, further comprising:

coupling a second conduit to the first conduit,

coupling the second conduit to the arterial system of the patient without entering the chest cavity or the abdominal cavity of the patient, and

coordinating the operation of the pulsatile pump to suction blood from the arterial system through the first and second conduits while the heart is in systole and expel the blood into the first and second conduits and the arterial system while the heart is in diastole.

3. The method of claim 2, wherein coupling the first and second conduits further comprises coupling the first and second conduits to different arteries.

4. The method of claim 1, further comprising:

directing a second conduit into the left side of the heart,

coupling a third conduit to an arterial system of the patient,

connecting a continuous pump between the second and third conduits,

implanting the continuous pump in the patient,

connecting a power supply to the continuous pump,

suctioning blood from the left side of the heart through the second conduit and into the continuous pump, and

expelling the blood from the continuous pump into the third conduit and the arterial system.

5. The method of claim 1, wherein coupling the conduit further comprises coupling to an artery in at least one of the neck, shoulder or upper chest region of the patient.

6. The method of claim 1, wherein coupling the conduit further comprises coupling to an artery in the retroperitoneal region of the patient.

7. The method of claim 1, further comprising implanting the pump in a superficial, subcutaneous area of the patient.

8. The method of claim 1, further comprising implanting the pump in the pelvic region of the patient.

9. The method of claim 1, wherein the step of connecting a power supply further comprises:

connecting a transcutaneous power supply by implanting a first portion of said power supply superficially and subcutaneously in the patient and removably coupling a second portion of said supply outside the patient.

10. A counterpulsation method of assisting the heart of a patient using a pump assist system, the method comprising:

coupling a first conduit to the arterial system of the patient without entering the chest cavity or abdominal cavity of the patient,

coupling a second conduit to the arterial system of the patient without entering the chest cavity or abdominal cavity of the patient,

connecting a pump between the first and second conduits,

implanting the pump in the patient without entering the chest cavity or abdominal cavity of the patient,

connecting a power supply to the pump,

coordinating the operation of the pump to suction blood from the arterial system through the first conduit while the heart is in systole and expel the blood into the arterial system while the heart is in diastole.

11. The method of claim 10, wherein the coupling steps further comprise coupling the first and second conduits to different arteries.

12. The method of claim 10, wherein the step of implanting the pump further comprises:

implanting the pump superficially and subcutaneously in the chest region of the patient.

13. The method of claim 10, wherein the step of connecting a power supply further comprises:

connecting a transcutaneous power supply by implanting a first portion of said power supply superficially and subcutaneously in the patient and removably coupling a second portion of said supply outside the patient.

14. The method of claim 10, further comprising:

introducing a flushing liquid into the pump to perform a rinsing function while the first and second conduits are coupled to the arterial system.

15. The method of claim 10, wherein the coupling steps further comprise coupling to arteries in at least one of the neck, shoulder or upper chest region of the patient.

16. The method of claim 10, wherein the coupling steps further comprise coupling to arteries in the retroperitoneal region of the patient.

17. The method of claim 10, further comprising implanting the pump in a superficial, subcutaneous area of the patient.

18. The method of claim 10, further comprising implanting the pump in the pelvic region of the patient.

19. A counterpulsation method of assisting the heart of a patient using a pump assist system, the method comprising:

coupling a first conduit to the arterial system of the patient,

connecting a pulsatile pump to the first conduit,

implanting the pump in the patient without entering the chest cavity or abdominal cavity of the patient,

connecting a power supply to the pump,

coordinating the operation of the pulsatile pump to suction blood from the arterial system through the first conduit while the heart is in systole and expel the blood into the first conduit and the arterial system while the heart is in diastole.

20. The method of claim 19, further comprising implanting the pump in a superficial, subcutaneous area of the patient.

21. The method of claim 19, wherein the first conduit is connected to the aorta of the patient and the pump is implanted in superficial, subcutaneous area in the chest region of the patient.

22. A counterpulsation method of assisting the heart of a patient using a pump assist system, the method comprising:

coupling a first conduit to the arterial system of the patient without entering the chest cavity or abdominal cavity of the patient,

connecting a pulsatile pump to the first conduit,

connecting a power supply to the pump,

coordinating the operation of the pulsatile pump to suction blood from the arterial system through the first conduit while the heart is in systole and expel the blood into the first conduit and the arterial system while the heart is in diastole.

23. The method of claim 22, further comprising:

positioning the pump outside of the patient'"'"'s body during operation of the pump.

24. The method of claim 22, further comprising:

coupling a second conduit between the pump and the arterial system without entering the chest cavity or abdominal cavity of the patient.

25. The method of claim 24, wherein the coupling steps further comprise coupling to different arteries.

26. A system for supplementing blood flow from the heart of a patient and providing counterpulsation blood flow, the system comprising:

a first conduit configured to be directed into the left side of the heart,

a second conduit configured to be coupled to the arterial system of the patient,

a continuous pump configured to be connected with the first and second conduits to suction blood from the first conduit and expel blood into the second conduit,

a third conduit configured to be coupled to the arterial system of the patient,

a pulsatile pump configured to be connected with the third conduit,

at least one power supply coupled to the pumps,

at least one control for (1) operating the continuous pump to suction blood from the left side of the heart through the first conduit and into the continuous pump and expel the blood from the continuous pump into the second conduit and the arterial system and (2) coordinating the operation of the pulsatile pump to suction blood from the arterial system through the third conduit while the heart is in systole and expel the blood into the arterial system while the heart is in diastole.

27. A pulsatile counterpulsation pump for use in assisting the heart of a patient, the pump comprising:

a pump housing having a chamber and an inlet and an outlet in fluid communication with said chamber,

a movable member mounted in said housing and operable to suction blood into said inlet and expel blood from said outlet in a pulsatile manner, and

a flushing fluid inlet communicating with said chamber for introducing a flushing fluid into said chamber to reduce blood clotting.

28. A pulsatile counterpulsation pump for use in assisting the heart of a patient, the pump comprising:

a pump housing having a chamber and an inlet and an outlet in fluid communication with said chamber,

a movable member mounted in said housing and operable to suction blood into said inlet in a first stroke and expel blood from said outlet in a second stroke, and

means for evacuating said chamber of at least substantially all blood at the end of the second stroke.