| CPC A61M 16/024 (2017.08) [A61B 5/0809 (2013.01); A61B 5/0833 (2013.01); A61B 5/0836 (2013.01); A61M 16/06 (2013.01); A61M 2016/0027 (2013.01); A61M 2016/0033 (2013.01); A61M 2205/3334 (2013.01); A61M 2205/3344 (2013.01); A61M 2205/52 (2013.01); A61M 2230/432 (2013.01); A61M 2230/435 (2013.01); A61M 2230/65 (2013.01)] | 18 Claims |
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1. A respiratory device, wherein the device comprises a respirator having a controllable respiratory gas source and a programmable control unit and at least one sensor unit for determining pressure and/or flow of a respiratory gas, wherein the control unit controls the respiratory gas source to specify a first respiration pattern with respect to pressure, flow, volume, and frequency, wherein the respiratory device further comprises a first sensor unit comprising a plurality of individual sensors configured for generating and/or measuring electrical potentials and noninvasively determining an electrical impedance of lungs of a patient, a second sensor unit configured for noninvasively determining a carbon dioxide supply, and a third sensor unit configured for noninvasively determining an oxygen supply of the patient, wherein the control unit evaluates (i) measured values of the first sensor unit to determine an instantaneous ventilation of the lungs during respiration using the first respiration pattern, (ii) measured values of the second sensor unit to determine an instantaneous carbon dioxide supply, and (iii) measured values of the third sensor unit to determine an instantaneous oxygen supply, and wherein the control unit evaluates (i) the sensor measured values of the first sensor unit to determine a resulting ventilation of the lungs during respiration using a second respiration pattern, (ii) the sensor measured values of the second sensor unit to determine the resulting carbon dioxide supply during the respiration using the second respiration pattern, and (iii) the sensor measured values of the third sensor unit to determine the resulting oxygen supply during the respiration using the second respiration pattern and compares the instantaneous ventilation to the resulting ventilation, and wherein information about the ventilation of the lung, the oxygen supply, and the carbon dioxide supply are used for controlling and regulating the respiration, and wherein the control unit controls the respiratory gas source to specify the second respiration pattern, which is different from the first respiration pattern with respect to pressure and/or flow and/or volume and/or frequency, if
(1) the first sensor unit indicates an unchanged EIT (Electrical Impedance Tomography) summation signal in response to the first respiration pattern and an elevated EIT change frequency, such that the second respiration pattern has an elevated mandatory frequency in comparison to the first respiration pattern; and/or
(2) the first sensor unit indicates an unchanged EIT summation signal in response to the first respiration pattern and a reduced amount for the carbon dioxide supply, such that the second respiration pattern has an elevated mandatory frequency in comparison to the first respiration pattern; and/or
(3) the first sensor unit indicates an EIT summation signal reduced in response to the first respiration pattern and a reduced amount for the carbon dioxide supply, such that the second respiration pattern has an elevated mandatory frequency in comparison to the first respiration pattern and/or an elevated tidal volume and/or an elevated pressure assistance; and/or
(4) the first sensor unit indicates an unchanged EIT summation signal in response to the first respiration pattern and an elevated amount for the carbon dioxide supply, such that the second respiration pattern has a changed EPAP pressure or course in comparison to the first respiration pattern; and/or
(5) the first sensor unit indicates an unchanged EIT summation signal in response to the first respiration pattern and an elevated measure for the carbon dioxide supply, such that the second respiration pattern has an elevated mandatory frequency in comparison to the first respiration pattern if an EIT change frequency is reduced; and/or
(6) the first sensor unit indicates a reduced EIT summation signal in response to the first respiration pattern and a reduced EIT change frequency and an elevated amount for the carbon dioxide supply, such that the second respiration pattern has an elevated mandatory frequency and/or an elevated tidal volume and/or an elevated pressure assistance in comparison to the first respiration pattern; and/or
(7) the first sensor unit indicates an EIT summation signal elevated in response to the first respiration pattern and/or a reduced EIT change frequency and a reduced amount for the oxygen supply, such that the second respiration pattern has an elevated frequency in comparison to the first respiration pattern and/or an at least short-term elevation of inspiration time and/or an adaptation of PEEP and/or a change of the respiration pattern.
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