Introduced in a respirator for a clinical use

Details Introduced in a respirator for a clinical use Introduced in a respirator for a clinical use

G - Physics

05

B

137/1.5

G05B 15/02 (2006.01) A61M 16/00 (2006.01) A62B 7/00 (2006.01)

Patent

CA 1202224

ABSTRACT OF THE DISCLOSURE The present invention provides a respirator for clini- cal use, comprising a pneumatic module and a control module connected to the pneumatic module by means of data lines and control lines. The pneumatic module comprises devices for con- nection to supplies of compressed gases which are fed to a pneu- matically operated pressure equalizer, which is connected to a mixing chamber controlled by a dual pressure switch from which there protrude two main manifolds which supply batteries of valves with series-connected resistances. One battery feeds an inhalation valve assembly, while the other feeds a control valve battery for the exhalation valve. The former feeds the patient's circuit and incorporates a flow transducer. The control module comprises a microprocessor incorporating a keyboard for receiving data and instructions and a cathode ray screen capable of simul- taneously displaying alpha-numeric and graphic information. The keyboard and the screen are connected to the microprocessor through the corresponding interphase units thereof. The data lines which connect the control module to the pneumatic module lead to a plurality of amplifying blocks followed by correspond- ing analog/digital converters. The data buses are also connect- ed to a plurality of optical couplers and amplifiers, which pro- duce signals controlling the various valves and members of the pneumatic module.

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