Portable and modular cardiopulmonary bypass apparatus and associated aortic balloon catheter and associated method

• US 5,308,320 A
• Filed: 12/28/1990
• Issued: 05/03/1994
• Est. Priority Date: 12/28/1990
• Status: Expired due to Term

• Current Assignee: Surgerx Medical, LLC
• Original Assignee: University of Pittsburgh of The Commonwealth System of Higher Education
• Inventors: Stezoski, S. William, Safar, Peter, Klain, Miroslav
• Primary Examiner(s): Hafer, Robert A.
• Assistant Examiner(s): RIMELL, SAMUEL G
• Application Number:
  US07/637,565
• Time in Patent Office: 1,222 Days
• Field of Search: 604/4, 604/5, 604/6, 604/113, 604/19, 604/114, 128/760, 248/682, 248/685
• US Class Current: 604/6.14
• CPC Class Codes: A61M 1/1698 Blood oxygenators with or without heat-exchangers intracorporal A61M1/1678; manufacturing of membranes therefor B01D67/00; semi-permeable membranes for separation processes characterised by their properties B01D69/00; semi-permeable membranes characterised by their material B01D71/00
• CPC Class Codes: A61M 1/3621 Extra-corporeal blood circuits single-needle circuits A61M1/30
• CPC Class Codes: A61M 1/3623 Means for actively controlling temperature of blood
• CPC Class Codes: A61M 1/3647 with recirculation of the priming solution
• CPC Class Codes: A61M 1/3666 Cardiac or cardiopulmonary bypass, e.g. heart-lung machines
• CPC Class Codes: A61M 2025/1015 having two or more independently movable balloons where the distance between the balloons can be adjusted, e.g. two balloon catheters concentric to each other forming an adjustable multiple balloon catheter system
• CPC Class Codes: A61M 2025/1052 for temporarily occluding a vessel for isolating a sector
• CPC Class Codes: A61M 2205/3334 Measuring or controlling the flow rate
• CPC Class Codes: A61M 25/0067 characterised by the distal end, e.g. tips A61M25/0054, A61M25/04 take precedence; balloon catheters A61M25/10
• CPC Class Codes: A61M 25/0069 Tip not integral with tube
• CPC Class Codes: A61M 25/04 in the body, e.g. expansible A61M25/10, A61M16/0488 take precedence
• CPC Class Codes: A61M 25/1011 Multiple balloon catheters
• CPC Class Codes: A61M 60/113 in other functional devices, e.g. dialysers or heart-lung machines
• CPC Class Codes: A61M 60/139 inside the aorta, e.g. intra-aortic balloon pumps
• CPC Class Codes: A61M 60/232 Centrifugal pumps
• 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 60/295 Balloon pumps for circulatory assistance
• CPC Class Codes: A61M 60/38 Blood oxygenation
• CPC Class Codes: A61M 60/416 transmitted directly by the motor rotor drive shaft
• CPC Class Codes: A61M 60/47 the force acting on the actuation means being mechanical, e.g. mechanically driven members clamping a blood vessel
• CPC Class Codes: A61M 60/497 : for balloon pumps for circulatory assistance
• CPC Class Codes: A61M 60/538 : Regulation using real-time blood pump operational parameter data, e.g. motor current
• CPC Class Codes: A61M 60/546 : of blood flow, e.g. by adapting rotor speed
• CPC Class Codes: A61M 60/585 : User interfaces
• CPC Class Codes: A61M 60/841 : of balloon pumps for circulatory assistance

Abstract

The portable and modular cardiopulmonary bypass apparatus has met the above mentioned needs. The apparatus consists of (i) a first cannula assembly means for withdrawing blood from a patient, (ii) a pump means connected to the first cannula assembly means for receiving the withdrawn blood and for moving the blood through the apparatus, and (iii) a first tubing means connected to the pump means to transport the patient'"'"'s blood away from the pump means. The apparatus further comprises (iv) oxygenator means for receiving blood from the first tubing means and for oxygenating the blood and (v) second cannula assembly means connected to the oxygenator means for returning the oxygenated blood to the patient. The apparatus is portable so that it can be used by medical personnel anywhere. In addition, the apparatus is adapted to include one or more modules for conditioning the blood, such as modules that include a heat exchanger, blood purifier, plasma and blood cell apheresis device and others. An aortic balloon catheter is also provided.

Claims

1. A portable and modular cardiopulmonary bypass apparatus comprising:

first cannula assembly means for withdrawing blood from a patient;

pump means connected to said first cannula assembly means for receiving said withdrawn blood and for moving said blood through said apparatus;

first tubing means connected to said pump means to transport said blood away from said pump means;

oxygenator means for receiving said blood from said first tubing means and for oxygenating said blood;

second cannula assembly means connected to said oxygenator means for returning said oxygenated blood to said patient;

said apparatus being portable, whereby said apparatus can be used by medical personnel at the scene of an accident or of a cardiac arrest victim or the like;

surgical tray means for containing surgical tools removably stored in said apparatus;

retractable legs positioned on the underside of said apparatus, whereby said legs may be deployed when said apparatus is in use to stabilize said apparatus; and

said retractable legs being of different dimensions, whereby said apparatus can be obliquely positioned when said retractable legs are deployed.

2. The apparatus of claim 1, including

wheels secured to lower portions of said apparatus.

3. The apparatus of claim 2, wherein

said pump means is a centrifugal non-occlusive self-regulated pump.

4. The apparatus of claim 3, including

control means associated with said pump means for controlling rpm and flow rate.

5. The apparatus of claim 4, including

at least one oxygen cylinder stored in said apparatus for supplying said oxygenator means.

6. The apparatus of claim 5, including

said apparatus having a retractable lid which covers the inside of the apparatus.

7. The apparatus of claim 6, including

handle means associated with said lid for ease of carrying.

8. The apparatus of claim 7, including

locking means on said lid and said apparatus to lock said retractable lid to the apparatus.