초록 ▼

A ventilator device and system comprising a rotating compressor, preferably a drag compressor, which, at the beginning of each inspiratory ventilation phase, is accelerated to a sufficient speed to deliver the desired inspiratory gas flow, and is subsequently stopped or decelerated to a basal flow l

A ventilator device and system comprising a rotating compressor, preferably a drag compressor, which, at the beginning of each inspiratory ventilation phase, is accelerated to a sufficient speed to deliver the desired inspiratory gas flow, and is subsequently stopped or decelerated to a basal flow level to permit the expiratory ventilation phase to occur. The ventilator device is small and light weight enough to be utilized in portable applications. The ventilator device is power efficient enough to operate for extended periods of time on internal or external batteries. Also provided is an oxygen blending apparatus which utilizes solenoid valves having specific orifice sizes for blending desired amounts of oxygen into the inspiratory gas flow. Also provided is an exhalation valve having an exhalation flow transducer which incorporates a radio frequency data base to provide an attendant controller with specific calibration information for the exhalation flow transducer. Stored, individualized compressor characterization information is used to control the acceleration and deacceleration of the rotating compressor.

대표청구항 ▼

[ What is claimed is:] [1.] A rotary drag compressor ventilator device for ventilating the lungs of a mammalian patient, said device comprising:A. a rotary drag compressor comprising:i. a housing having a gas inflow passageway and a gas outflow passageway;ii. a rotor mounted within said housing, sai

[ What is claimed is:] [1.] A rotary drag compressor ventilator device for ventilating the lungs of a mammalian patient, said device comprising:A. a rotary drag compressor comprising:i. a housing having a gas inflow passageway and a gas outflow passageway;ii. a rotor mounted within said housing, said rotor having a multiplicity of blades formed circularly therearound such that, when said rotor is rotated in a first direction, said blades will compress gas within said housing and expel said compressed gas out of said outflow passageway;iii. a motor coupled to said compressor for rotating said rotor within said compressor housing; andB. a controller apparatus to intermittently accelerate and decelerate the rotation of said rotor in accordance with desired flow rate and pressure of inspiratory gas and in accordance with stored individualized compressor characterization information so as to deliver discrete periods of inspiratory gas flow at said flow rate and pressure through said outflow passageway.