Single port cardiac support apparatus

• US 6,858,001 B1
• Filed: 09/25/2000
• Issued: 02/22/2005
• Est. Priority Date: 07/11/1997
• Status: Expired due to Fees

• Current Assignee: Maquet Cardiovascular LLC (Getinge AB)
• Original Assignee: A-Med Systems, Inc.
• Inventors: Aboul-Hosn, Walid Najib
• Primary Examiner(s): Sykes, Angela D.
• Assistant Examiner(s): Machuga, Joseph S.
• Application Number:
  US09/669,104
• Time in Patent Office: 1,611 Days
• Field of Search: 600 16- 18, 604/93.01, 604/96.01, 604 9701- 9703, 604/98.01, 604/98.02, 604 9901- 9903, 604/101.01, 604/101.05, 604/102.02, 604/102.03, 604/103.01, 604/103.07, 604/43, 604/509, 604/510, 604/151, 604/536, 604/266, 604/27, 604/28, 604/284, 604/914, 604/915, 604/919, 623/3.13, 623/3.14, 623/3.24, 623/3.25, 623/3.26, 623/3.3, 623/3.1, 415/900
• US Class Current: 600/16
• CPC Class Codes: A61M 1/3653 Interfaces between patient blood circulation and extra-corporal blood circuit
• CPC Class Codes: A61M 1/3659 Cannulae pertaining to extracorporeal circulation
• CPC Class Codes: A61M 2205/32 with radio-opaque indicia
• CPC Class Codes: A61M 2205/3334 Measuring or controlling the flow rate
• CPC Class Codes: A61M 60/117 for assisting the heart, e.g. transcutaneous or external ventricular assist devices
• CPC Class Codes: A61M 60/135 inside a blood vessel, e.g. using grafting
• 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 60/232 Centrifugal pumps
• CPC Class Codes: A61M 60/237 the blood flow through the rotating member having mainly axial components, e.g. axial flow pumps
• CPC Class Codes: A61M 60/279 Peristaltic pumps, e.g. roller pumps
• CPC Class Codes: A61M 60/35 for specific surgeries, e.g. for Fontan procedure
• CPC Class Codes: A61M 60/414 transmitted by a rotating cable, e.g. for blood pumps mounted on a catheter
• CPC Class Codes: A61M 60/441 generated by an electromotor
• CPC Class Codes: A61M 60/531 using blood pressure data, e.g. from blood pressure sensors
• CPC Class Codes: A61M 60/546 of blood flow, e.g. by adapting rotor speed
• CPC Class Codes: A61M 60/859 Connections therefor
• CPC Class Codes: A61M 60/867 using position detection during deployment, e.g. for blood pumps mounted on and driven through a catheter
• CPC Class Codes: A61M 60/894 Passive valves, i.e. valves actuated by the blood
• CPC Class Codes: Y10S 415/90 Rotary blood pump

Abstract

A minimal intrusive cardiac support apparatus is disclosed which requires only one incision into a main blood vessel or heart chamber. The apparatus includes a pair of generally coaxial and slideably arranged cannulae (one inner and one outer) communicatively coupled to a blood pump for providing right-heart and/or left-heart cardiac support during cardiac surgery. Optional balloons may be mounted on the outside of the inner and outer conduits which can be selectively inflated to seal off the sides surrounding vessel or to deliver cooling fluid or medication to the surrounding tissue. Using the apparatus, a method of pumping blood through the body is also disclosed.

Claims

1. A method of providing cardiac support comprising

the steps of:

a. selecting a blood flow apparatus including a generally coaxially aligned and slideably arranged inner conduit and outlet conduit, and a blood pump disposed therebetween, the blood pump capable of pumping blood through a body;

b. forming a portal in a blood vessel;

c. securing the outer conduit within the portal;

d. inserting the inner conduit through the outer conduit and advancing the inner conduit through a vessel into the heart and through a desired heart valve so that the distal opening of the inner cannula is disposed on an opposite side of the desired heart valve as the distal opening of the outer conduit; and

e. activating the pump so that blood is pumped into the distal opening of one of the inner conduit and outer conduit and transported out of the distal opening of the other of the inner conduit and outer conduit.

2. A method of providing cardiac support comprising

the steps of:

a. selecting a blood flow apparatus including a generally coaxially aligned and slideably arranged inner conduit and outlet conduit, and a blood pump disposed therebetween, the blood pump capable of pumping blood through a body;

b. forming a portal in a heart chamber;

securing the outer conduit within the portal;

d. inserting the inner conduit through the outer conduit so that the distal opening of the inner cannula is disposed on an opposite side of a desired heart valve as the distal opening of the outer conduit; and

e. activating the pump so that blood is pumped into the distal opening of one of the inner conduit and outer conduit and transported out of the distal opening of the other of the inner conduit and outer conduit.

3. A method of providing cardiac support comprising

the steps of:

a. selecting a blood flow apparatus including a slideably arranged inner conduit and outlet conduit, and a blood pump disposed therebetween, the blood pump capable of pumping blood through a body;

b. forming a portal in a blood vessel;

c. securing the outer conduit within the portal;

d. inserting the inner conduit through the outer conduit and advancing the inner conduit through a vessel into the heart and through a desired heart valve so that the distal opening of the inner cannula is disposed on an opposite side of the desired heart valve as the distal opening of the outer conduit; and

e. activating the pump so that blood is pumped into the distal opening of one of the inner conduit and outer conduit and transported out of the distal opening of the other of the inner conduit and outer conduit.

4. The method of claim 3 and further, wherein the blood pump is a reverse axial flow blood pump.

5. The method of claim 3 and further, wherein the distal openings of the inner and outer conduits are positioned on either side of the pulmonic valve and the pump operated to provide right-heart cardiac support.

6. The method of claim 3 and further, wherein the distal openings of the inner and outer conduits are positioned on either side of the aortic valve and the pump operated to provide left-heart cardiac support.

7. A method of providing cardiac support comprising

the steps of:

a. selecting a blood flow apparatus including a slideably arranged inner conduit and outlet conduit, and a blood pump disposed therebetween, the blood pump capable of pumping blood through a body,

b. forming a portal in a heart chamber;

c. securing the outer conduit within the portal;

d. inserting the inner conduit through the outer conduit so that the distal opening of the inner cannula is disposed on an opposite side of a desired heart valve as the distal opening of the outer conduit; and

f. activating the pump so that blood is pumped into the distal opening of one of the inner conduit and outer conduit and transported out of the distal opening of the other of the inner conduit and outer conduit.