Abstract: The invention relates to a device for the regulation of PEEP and FiO2 of a ventilator for achieving an arterial oxygen partial pressure in the blood of a mechanically ventilated patient. At reading which is representative of the success of the oxygen supply, i.e. the oxygen saturation of the blood is measured with the device, and assigned to one of three regions, which are defined by two characteristic lines. A first control loop is designed to optimise PEEP and FiO2 on assigning a reading to a region which demands a change of the settings, or to retaining the settings with an assignment to the normal region between the characteristic lines. This first control loop carries out such an optimisation at predefined temporal intervals on account of the representative reading (SaO2REP) and a predefined necessary supply intensity. The ventilator is subsequently activated accordingly.

Abstract: A method of controlling a ventilator to provide spontaneous breathing support includes determining a target CO2 value, determining a support pressure, detecting a patient-generated spontaneous breath, and delivering ventilation gas to the patient based on the support pressure. A patient CO2 is then measured, along with measuring at least one of a patient breath rate and a breath volume. The patient CO2 is compared to the target CO2 value. The patient's respiratory drive is determined based on at least one of the patient breath rate and the breath volume. If elevated respiratory drive is detected, then the support pressure is adjusted accordingly. If elevated respiratory drive is not detected, then the target CO2 value is adjusted based on the measured patient CO2.

Abstract: A method of controlling a ventilator to provide spontaneous breathing support includes determining a target CO2 value, determining a support pressure, detecting a patient-generated spontaneous breath, and delivering ventilation gas to the patient based on the support pressure. A patient CO2 is then measured, along with measuring at least one of a patient breath rate and a breath volume. The patient CO2 is compared to the target CO2 value. The patient's respiratory drive is determined based on at least one of the patient breath rate and the breath volume. If elevated respiratory drive is detected, then the support pressure is adjusted accordingly. If elevated respiratory drive is not detected, then the target CO2 value is adjusted based on the measured patient CO2.

Abstract: The invention relates to a device, with which one is to prevent a patient who breathes on Ms own and who desires a lower CO2-partial-pressure than is achieved by the set Ventilation from tiring. It comprises the following means for the regulation of a changing intensity of a mechanical Ventilation: • means for determining a target frequency RRsp, • means for determining a spontaneous frequency RRspont • means for comparing the spontaneous frequency RRspont with the target frequency RRsp. wherein adapting a Ventilation target value (% MinVol, V?gAsp) on account of the result of the comparison of the spontaneous frequency RRspont with the target frequency RRsp and • means for adapting the parameters determining the intensity of the Ventilation, on account of the Ventilation target value (% MinVol, V?gAsp). This so-called pump support System (PSS) is activated (PSS on) when the patient breathes in an adequately spontaneous manner (Criterion 1).

Abstract: The invention relates to an apparatus with sensing means suitable for sensing the inspiratory phase and the expiratory phase of each respiratory cycle of a respirated person from in each case at least one minimum and maximum amplitude of a circulation value within a single respiratory cycle, and with a computing device for calculating a variation of the amplitudes of the circulation value occurring within a said respiratory cycle.

Abstract: The invention relates to a device for the automated determination of the PEEP of a patient. Said device comprises sensors and a suitable electronic system for determining a pressure-volume characteristic curve during a P/V maneuver. The electronic system is designed in such a way as to generate, specifically in terms of breathing pressure, the difference between “lung volume during exhalation (Vdef)” and “lung volume during inhalation (Vinf)”, and to determine the maximum value of said difference. The breathing pressure is then determined, for which the volume difference has a value defined in relation to the maximum value of the volume difference. The device calculates a PEEP value on the basis of said determined breathing pressure value.

Abstract: The invention relates to an apparatus with sensing means suitable for sensing the inspiratory phase and the expiratory phase of each respiratory cycle of a respirated person from in each case at least one minimum and maximum amplitude of a circulation value within a single respiratory cycle, and with a computing device for calculating a variation of the amplitudes of the circulation value occurring within a said respiratory cycle.

Abstract: The invention relates to a device for the automated determination of the PEEP of a patient. Said device comprises sensors and a suitable electronic system for determining a pressure-volume characteristic curve during a P/V manoeuvre. The electronic system is designed in such a way as to generate, specifically in terms of breathing pressure, the difference between “lung volume during exhalation (Vdef)” and “lung volume during inhalation (Vinf)”, and to determine the maximum value of said difference. The breathing pressure is then determined, for which the volume difference has a value defined in relation to the maximum value of the volume difference. The device calculates a PEEP value on the basis of said determined breathing pressure value.

Abstract: The invention relates to a method for acquiring several changing values and representing the acquired values on a monitoring screen, as well as to a device with a screen in order, on this, to represent changing values acquired during ventilation of the patient. The device comprises means for acquiring at least three changing values of different origin, and means for representing the values, which permit the acquired values to be qualitatively represented on the screen together in a single graphic element. This graphic element has a pictorial representation of a lung shape. The invention is characterised in that the means for representing the values are designed such that a volume change of the ventilated lung which is detected within each breath, is represented in an animated manner by way of size change of the lung shape corresponding to this corresponding volume change.

Abstract: The invention relates to a device, with which one is to prevent a patient who breathes on Ms own and who desires a lower CO2-partial-pressure than is achieved by the set Ventilation from tiring. It comprises the following means for the regulation of a changing intensity of a mechanical Ventilation: • means for determining a target frequency RRsp, • means for determining a spontaneous frequency RRspont • means for comparing the spontaneous frequency RRspont with the target frequency RRsp. wherein adapting a Ventilation target value (% MinVol, V?gAsp) on account of the result of the comparison of the spontaneous frequency RRspont with the target frequency RRsp and • means for adapting the parameters determining the intensity of the Ventilation, on account of the Ventilation target value (% MinVol, V?gAsp). This so-called pump support System (PSS) is activated (PSS on) when the patient breathes in an adequately spontaneous manner (Criterion 1).

Abstract: The invention relates to a device for the regulation of PEEP and FiO2 of a ventilator for achieving an arterial oxygen partial pressure in the blood of a mechanically ventilated patient. At reading which is representative of the success of the oxygen supply, i.e. the oxygen saturation of the blood is measured with the device, and assigned to one of three regions, which are defined by two characteristic lines. A first control loop is designed to optimise PEEP and FiO2 on assigning a reading to a region which demands a change of the settings, or to retaining the settings with an assignment to the normal region between the characteristic lines. This first control loop carries out such an optimisation at predefined temporal intervals on account of the representative reading (SaO2REP) and a predefined necessary supply intensity. The ventilator is subsequently activated accordingly.