초록 ▼

A device is disclosed for monitoring the respiration parameters of an artificial respiration system. The proposed device has a treatment device including a filter and/or heat-and moisture exchanger fitted in a respiration tube system and is based on evaluation by a monitoring unit of pressure and/or

A device is disclosed for monitoring the respiration parameters of an artificial respiration system. The proposed device has a treatment device including a filter and/or heat-and moisture exchanger fitted in a respiration tube system and is based on evaluation by a monitoring unit of pressure and/or flow-rate values in the respiration system. Inside the respiration system, pressure sensors are provided upstream and downstream of a flow resistance in the treatment device and pressure sensors are provided upstream and downstream of another flow resistance suitable as a reference. The signals from the pressure sensors are fed to the monitoring unit which determines the respiration parameters from the pressure difference .DELTA.p.sub.3 above the flow resistance in the treatment device, the pressure difference .DELTA.p.sub.4 above the other flow resistance suitable as a reference within the respiration system, and from the time t.

대표청구항 ▼

[ What is claimed is:] [1.]1. A ventilation system comprising(a) a ventilation tube system comprising a treatment device for creating a first flow resistance and a device selected from the group consisting of a filter and a heat and moisture exchanger;(b) a monitoring unit for evaluating ventilation

[ What is claimed is:] [1.]1. A ventilation system comprising(a) a ventilation tube system comprising a treatment device for creating a first flow resistance and a device selected from the group consisting of a filter and a heat and moisture exchanger;(b) a monitoring unit for evaluating ventilation system quantities selected from the group consisting of pressure quantities and flow quantities;(c) first and second pressure sensors located respectively upstream and downstream of the treatment device;(d) means for creating a second flow resistance in series to the first flow resistance, said second flow resistance being suitable as a reference;(e) third and fourth pressure sensors located respectively upstream and downstream of the means for creating a second flow resistance;(f) whereby said pressure sensors feed signals to the monitoring unit, the monitoring unit calculating selected parameters derived from a first differential pressure across the first flow resistance and a second differential pressure across the second flow resistance as a function of time to determine the degree of permeability of the filter or exchanger.