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Appliance for cannulation of a blood vessel

  • US 8,419,671 B2
  • Filed: 04/01/2009
  • Issued: 04/16/2013
  • Est. Priority Date: 12/23/2002
  • Status: Expired due to Term
First Claim
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1. A method for establishing an extracorporeal circuit, comprising the steps of:

  • a) canulating a blood vessel, with an apparatus comprising a cannula having a blood-guiding lumen, which after introduction into said vessel, said lumen is in fluid communication with said vessel, and at least one balloon surrounding said cannula;

    b) dividing in a controlled manner the blood flowing within said vessel into a first subsidiary stream which leaves said vessel through said lumen of said cannula, and a second subsidiary stream which is guided via said at least one balloon past said cannula through said vessel, wherein said balloon has a surface with at least one groove-like depression facing toward said lumen and a second surface with optionally at least one groove-like depression facing toward said vessel, and;

    c) guiding said first subsidiary blood stream through a lung assist device and then back into another blood vessel.

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