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Shock treatment systems and methods

  • US 7,210,480 B2
  • Filed: 04/08/2002
  • Issued: 05/01/2007
  • Est. Priority Date: 11/09/1993
  • Status: Expired due to Fees
First Claim
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1. A method for increasing the blood pressure in a spontaneously breathing person in need thereof, the method comprising the steps of:

  • sensing at least one physiological parameter that is selected from a group consisting of the blood pressure, end tidal CO2 and oxygen saturation of the person;

    interfacing an inflow valve to the person'"'"'s airway that is operable to vary resistance to respiratory gas inflow through the inflow valve to the person'"'"'s lungs due to spontaneous inhalation;

    operating the inflow valve based on the sensed parameter to vary resistance to respiratory gas inflow to the person'"'"'s lungs while the person is spontaneously inhaling to create a vacuum within the thorax of the person within the range from less than 0 cm H2O to about −

    50 cm H2O and increase blood flow back to the right heart of the person, thereby enhancing the person'"'"'s blood pressure.

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