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Method, system and apparatus for evaluating hemodynamic parameters

  • US 5,788,647 A
  • Filed: 01/24/1997
  • Issued: 08/04/1998
  • Est. Priority Date: 01/24/1997
  • Status: Expired due to Term
First Claim
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1. Apparatus for evaluating the hemodynaric state of the cardiovascular system of the body of a patient, comprising:

  • a pulmonary artery catheter having a distal end positionable within mixed venous blood at the pulmonary artery of said body and an indwelling region spaced rearwardly therefrom, said catheter extending to a proximal end;

    a diffusion channel within said catheter having a gas input connectable with a controlled source of gas biocompatible with said body and extending to an infusion component located at said indwelling region and configured for infusing said gas into the bloodstream of said body; and

    a gas sensor component mounted upon said catheter at said distal end and having an output corresponding with a level of said biocompatible gas within said mixed venous blood.

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