Respiratory device

A respiratory device for the at least supportive-partial artificial respiration of patients, comprising:

• a respiratory gas conduit assembly;
• a pressure changing assembly for changing the pressure of respiratory gas in the respiratory gas conduit assembly during the respiratory operation of the respiratory device;
• and
• a control device controlling the respiratory operation of the pressure changing assembly such that the patient is supplied with a predetermined respiratory gas volume per minute;
• wherein the control device has a data input for transmitting operational and/or patient data to the control device;
• wherein the control device is configured to determine a respiration tidal volume or a respiration frequency as a respiratory operating parameter for the operation of the pressure changing assembly selectively using a predetermined first data relationship or using a predetermined second data relationship that is different from the first data relationship;
• wherein the control device is configured to select a data relationship from the predetermined first and the predetermined second data relationship depending on a resistance data value denoting a respiration resistance in connection with a patient to be ventilated, and thus to determine the respiratory operating parameter for the predetermined respiratory gas volume per minute according to the selected data relationship from the first data relationship and the second data relationship,
• wherein the respiratory device is configured to determine a first respiratory base operating parameter for a resistance data value according to a predetermined, first data base relationship and to determine a second respiratory base operating parameter according to a predetermined, second data base relation-ship different from the first, wherein the respiratory device is further configured to compare the first and the second respiratory base operating parameters with each other, and depending on the result of the comparison, to determine the respiratory operating parameter using the predetermined, first data relationship or using the predetermined, second data relationship.