Ventilation system
First Claim
Patent Images
1. A system comprising:
- a ventilation system;
a measuring system for performing electric impedance tomography, said measuring system measuring impedance data during the electric impedance tomography in a time-dependent manner and transmitting the data to said ventilation system;
a filter separating the impedance data in a frequency-dependent manner; and
communication means for bidirectional data exchange between said ventilation system and said measuring system for the electric impedance tomography.
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Abstract
A ventilation system (1, 10) is combined with a measuring method (2, 22, 222) for electric impedance tomography (EIT). Bidirectional data exchange between the two systems is provided. Both the ventilation system (1, 10) and the measuring system (2, 22, 222) have a first and second communications electronic unit (11, 12) each with associated transmitting and receiving means for the bidirectional data exchange.
130 Citations
27 Claims
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1. A system comprising:
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a ventilation system; a measuring system for performing electric impedance tomography, said measuring system measuring impedance data during the electric impedance tomography in a time-dependent manner and transmitting the data to said ventilation system; a filter separating the impedance data in a frequency-dependent manner; and communication means for bidirectional data exchange between said ventilation system and said measuring system for the electric impedance tomography. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of monitoring a patient during ventilation, the method comprising the steps of:
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providing a ventilator and connecting it to a patient and initiating respiration; providing an electric impedance tomography measurement system and connecting it to the same patient and measuring with the electric impedance tomography measurement system, said measuring being activated depending on a ventilation pattern and/or a measured pressure or volume flow in the ventilator so that impedance data, which will be used as reference values for the impedance measurement that follow in time, are determined at predetermined points in the ventilation pattern; and providing bidirectional data exchange between the ventilator and the measuring system. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A method of monitoring a patient during ventilation, the method comprising the steps of:
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providing a ventilator and connecting it to a patient and initiating respiration; providing an electric impedance tomography measurement system connected to the patient and measuring electric impedance data with the electric impedance tomography measurement system in a time-dependent manner; separating impedance data by an adaptive high-pass filter or band pass filter to separate the impedance data relevant for cardiac activity, and by an adaptive low pass filter or band pass filter to separate the impedance data relevant for pulmonary or respiratory activity; determining a current heart rate from the impedance data and transmitting the hear rate to the ventilator; providing bidirectional data exchange between the ventilator and the measuring system.
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23. A system comprising:
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a ventilation system; a measuring system for performing electric impedance tomography, said measuring system determining a current heart rate from data collected during the electric impedance tomography and transmitting the data to said ventilation system; communication means for bidirectional data exchange between said ventilation system and said measuring system for the electric impedance tomography.
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24. A system comprising:
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a ventilation system; a measuring system for electric impedance tomography, said measuring system being activated depending on a ventilation pattern and/or a measured pressure or volume flow in said ventilation system so that impedance data, which will be used as reference values for an impedance measurement that follows in time, are determined at predetermined points in the ventilation pattern; communication means for bidirectional data exchange between said ventilation system and said measuring system for the electric impedance tomography. - View Dependent Claims (25, 26)
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27. A system comprising:
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a measuring system for performing electric impedance tomography, said measuring system measurement system including a plurality of electrodes El to En, which are connected by an analog connection lead to an analog-digital adapter circuit; communication means connected to said measuring system for bidirectional data exchange to and from said measuring system; a ventilation system connected communication means for bidirectional data exchange between said ventilation system and said measuring system, said ventilation system including evaluating data from said measuring system and controlling said measuring system.
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Specification