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Central venous catheter assembly for measuring physiological data for cardiac output determination and method of determining cardiac output

  • US 8,016,766 B2
  • Filed: 10/24/2008
  • Issued: 09/13/2011
  • Est. Priority Date: 11/23/2007
  • Status: Active Grant
First Claim
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1. A central venous sensor assembly for measuring physiological data for cardiac output determination, said measurement assembly comprising:

  • a distal intravascular portion for placement in the vena cava inferior of a patient and a proximal intravascular portion for placement in the vena cava superior of the patient,a distal flux measurement unit arranged in the distal intravascular portion and adapted to provide raw measurement data for determination of a blood flow in the direction towards the proximal intravascular portion, anda proximal flux measurement unit arranged in the proximal intravascular portion and adapted to provide raw measurement data for determination of a blood flow in the direction towards the distal intravascular portion,wherein the venous sensor assembly is connected to an evaluation unit comprising a first input channel for receiving raw measurement data from said distal flux measurement unit and a second input channel for receiving raw measurement data from said proximal flux measurement unit and being adapted to;

    determine a first blood flow from the raw measurement data received from said distal flux measurement unit,determine a second blood flow from the raw measurement data received from said proximal flux measurement unit, anddetermine said cardiac output as a sum of said first blood flow and said second blood flow.

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