Shock treatment systems and methods
First Claim
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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Accused Products
Abstract
According to the invention, methods and devices for increasing cardiopulmonary circulation induced by chest compression and decompression when performing cardiopulmonary resuscitation are provided. According to one method, a pressure responsive inflow valve is coupled to a patient'"'"'s airway. Chest compressions and chest decompressions are performed. During chest decompression the inflow valve prevents respiratory gases from entering the lungs until a certain negative intrathoracic pressure level is exceeded at which time the one inflow valve opens. In this way, the inflow valve assists in increasing the magnitude and duration of negative intrathoracic pressure during decompression to enhance the amount of blood flow into the heart and lungs. Further, the patient is supplied with a pressurized respiratory gas through the inflow valve when the inflow valve opens to ventilate the patient.
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Citations
9 Claims
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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:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for increasing the blood pressure in a spontaneously breathing person, the method comprising the steps of:
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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 increase or decrease respiratory gas flow to the person'"'"'s lungs; operating the inflow valve based on the sensed parameter to increase or decrease respiratory gas flow to the person'"'"'s lungs while the person is inhaling to create a vacuum within the thorax of the person and increase blood flow back to the right heart of the person, thereby enhancing the person'"'"'s blood pressure; and supplying a drug or a medicament to the person upstream or downstream of the inflow valve.
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Specification