SAFETY CONNECTOR FOR BALLOON PUMP

• US 3,720,199 A
• Filed: 05/14/1971
• Issued: 03/13/1973
• Est. Priority Date: 05/14/1971
• Status: Expired due to Term

• Current Assignee: Kontrol Cardiovascular Incorporated
• Original Assignee: Armando Federico, Michael L. Rishton
• Inventors: Rishton, Michael L., Federico, Armando
• Primary Examiner(s): Truluck, Dalton L.
• Application Number:
  US05/143,392
• Time in Patent Office: 669 Days
• Field of Search: 128/1R,1D,214R,274,273
• US Class Current: 600/18
• CPC Class Codes: A61M 2205/6018 providing set-up signals for the apparatus configuration
• CPC Class Codes: A61M 2205/6027 Electric-conductive bridges closing detection circuits, with or without identifying elements, e.g. resistances, zener-diodes
• CPC Class Codes: A61M 60/139 inside the aorta, e.g. intra-aortic balloon 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 60/497 for balloon pumps for circulatory assistance
• CPC Class Codes: A61M 60/515 Regulation using real-time patient data
• CPC Class Codes: A61M 60/538 Regulation using real-time blood pump operational parameter data, e.g. motor current
• CPC Class Codes: A61M 60/878 Electrical connections within the patient's body
• CPC Class Codes: F04B 45/033 having fluid drive

Abstract

An intra aortic balloon catheter assembly for use in a circulatory assist system which includes a special connector for joining a balloon implanted in the patient to a control console which may house both pneumatic and electronic controls. The connector is adapted to provide a signal which indicates volumetric displacement of the balloon. This volume is compared to the volume of load gas utilized and shuts the system down if an over-inflation condition exists, prevents overinflation of the balloon, inadvertent use of an incorrectly sized balloon, and allows presterilization of the whole assembly.

Claims

1. In a circulatory assist system having pneumatic means including pneumatic pump means adapted to sequentially apply pressure to a load gas to inflate and deflate a balloon placed in an artery of a patient, means for providing a first output signal proportional to the volumetric displacement of said pneumatic pump means, and electronic timing means for controlling said pneumatic means by sequencing said inflation and deflation to the said patient'"'"''"'"'s heart rhythm, the improvement comprising:

a. a catheter;

b. a balloon coupled to one end of said catheter, said balloon being adapted to be placed in an artery;

c. first means for providing a second output signal proportional to the volumetric displacement of said balloon, said first means comprising a connector for removeably coupling said catheter to said pneumatic pump means, said connector comprising first and second separable portions, said first portion being fixedly attached to the end of said catheter remote from said balloon, and impedance means carried by said first portion;

d. comparator means for receiving said first and second output signals and generating a third output signal when said first output signal is greater than said second output signal; and

e. venting means actuated by said third output signal for deactivating said pneumatic means.

2. The device of claim 1 wherein said first portion includes terminal means for electrically connectIng said impedance means in circuit with said comparator means, said first portion including further means for coupling said load gas to said balloon via said catheter.

3. The device of claim 2 additionally including tube means connected between said second portion and said pneumatic pump means whereby said load gas may inflate and deflate said balloon.

4. The device of claim 3 additionally including insets disposed in said second portion for receiving said terminal means.

5. The device of claim 4 additionally including conductors electrically coupled to said insets for providing electrical connection between said insets and said comparator.