초록 ▼

A ventilator includes a gas flow generator for generating a gas with an adjustable pressure and/or flow rate, an inspiratory line with a proximal end, connected to the gas flow generator and a distal end, devised for connection to a patient, an expiratory valve connected to the inspiratory line at a

A ventilator includes a gas flow generator for generating a gas with an adjustable pressure and/or flow rate, an inspiratory line with a proximal end, connected to the gas flow generator and a distal end, devised for connection to a patient, an expiratory valve connected to the inspiratory line at a specific distance from the distal end of the inspiratory line to evacuate gas exhaled by the patient, a pressure gauge and/or a flow meter arranged to measure pressure and/or the rate of gas flow in the inspiratory line and a control unit for controlling at least the maintenance of a positive end-expiratory pressure (PEEP). For PEEP to be maintained in a simple and reliable manner, the ventilator is devised with the pressure gauge and/or the flow meter connected to the inspiratory line between the expiratory valve and the distal end of the inspiratory line, and the control unit is devised to open the expiratory valve and regulate, on the basis of the pressure and/or flow measured, a flow of gas through the inspiratory line during expiration so that the desired positive end-expiratory pressure is maintained.

대표청구항 ▼

[ I claim as my invention:] [1.] A ventilator comprising:a gas flow generator which generates a flow of gas with at least one pre-selectable parameter value selected from the group of parameter values comprising pressure and flow rate;an inspiratory line having a proximal end connected to said gas f

[ I claim as my invention:] [1.] A ventilator comprising:a gas flow generator which generates a flow of gas with at least one pre-selectable parameter value selected from the group of parameter values comprising pressure and flow rate;an inspiratory line having a proximal end connected to said gas flow generator and an opposite, distal end adapted for connection to a patient;an expiratory valve connected to said inspiratory line at a distance from said distal end of said inspiratory line to evacuate gas exhaled by a patient;at least one measuring instrument selected from the group consisting of a pressure gauge and a flow meter, connected to measure at least one measured characteristic, selected from the group of measured characteristics consisting of pressure and flow rate, of gas in said inspiratory line, said at least one measuring instrument being connected to said inspiratory line between said expiratory valve and said distal end of said inspiratory line; andcontrol means, supplied with said at least one measured characteristic from said at least one measuring instrument, for opening said expiratory valve and simultaneously regulating a flow of said gas from said gas flow generator through said inspiratory line during expiration, dependent on said at least one measured characteristic, for maintaining a positive end-expiratory pressure.