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Venous cannula

  • US 5,762,624 A
  • Filed: 06/20/1997
  • Issued: 06/09/1998
  • Est. Priority Date: 12/03/1992
  • Status: Expired due to Term
First Claim
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1. A system for removing blood from a venous system of a patient and returning oxygenated blood to the patient from an extracorporeal bypass system, the system comprising:

  • a venous cannula including a shaft having a proximal end, a distal end, a blood withdrawal lumen, and a first inlet in fluid communication with the blood withdrawal lumen for withdrawing blood from a patient, the blood withdrawal lumen being of sufficient size to provide full bypass, the shaft having a length selected so as to extend into at least one of a superior vena cava and an inferior vena cava of the patient from a peripheral vein;

    means for occluding a vessel selected from the superior vena cava and the inferior vena cava of the patient, the vessel occluding means being mounted to the shaft and being movable between an expanded shape and a collapsed shape;

    an arterial cannula having a blood return lumen, the arterial cannula being configured to be positioned in the patient'"'"'s vascular system for returning oxygenated blood to the patient; and

    an extracorporeal bypass system configured to maintain circulation of oxygenated blood in the patient when the patient'"'"'s heart is arrested;

    wherein the blood withdrawal lumen and blood return lumen are both coupled to the bypass system.

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