Pneumatic and electric coupled switch

Abstract

The invention provides a pneumatic and electric coupled switch, which comprises an electric circuit control module, an air circuit control module, an actuating piece and a driving piece, wherein the electric circuit control module is connected with a power supply and is used to control the state of connection between the pneumatic and electric coupled switch and the power supply; the air circuit control module is connected with an air source and is used to control the state of connection between the pneumatic and electric coupled switch and the air source; the actuating piece is operationallyconnected with the electric circuit control module and the air circuit control module to actuate the operation of the electric circuit control module and the air circuit control module; and the driving piece is used to connect the actuating piece with the air circuit control module. The electric circuit control module has a first state and a second state. The air circuit control module has a first position, a second position and a third position. When the electric circuit control module is in the first state, the electric circuit control module is disconnected with the power supply and the air circuit control module is at the first position at the moment, so the pneumatic and electric coupled switch is disconnected with an air circuit; and when the electric circuit control module is in the second state, the electric circuit control module is connected with the power supply and the air circuit control module is at the second position or the third position at the moment, so the pneumatic and electric coupled switch is connected with the air circuit.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a gas-electric switch for an anesthesia machine. Background technique [0002] In the prior art, the power control and air source control of the anesthesia machine are separated. When the anesthesia machine is powered off, if the air source is not disconnected, the anesthesia machine is still in the ventilation state, and the ventilation volume cannot be controlled. , which will undoubtedly cause danger to the patient; in the case of cutting off the gas source, if the power supply is not cut off, the anesthesia machine is still in working condition, and most of the existing anesthesia machines are of electric pneumatic control type. Under such circumstances, the power-on operation of the anesthesia machine has no practical significance. Contents of the invention [0003] The purpose of the present invention is to provide a gas-electric linkage switch, which can simultaneously co...

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Problems solved by technology

[0002] In the prior art, the power control and air source control of the anesthesia machine are separated. When the anesthesia machine is powered off, if the air source is not disconnected, the anesthesia machine is still in the ventilation state, and the ventilation volume cannot be controlled. , which will undoubtedly cause danger to the patient; in the case of cutting off the gas source, if the power supply is not cut off, the anesthesia machine is still in working condition, and most of the existing anesthesia machines are of electric pneumatic control type. In this case, the power-on operation of the anesthesia machine has no practical significance

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