Protection apparatus used for anaesthesia machine and anaesthesia machine with protection apparatus

Abstract

The invention provides a protection apparatus used for an anaesthesia machine, and an anaesthesia machine with the protection apparatus. The apparatus comprises a load control module; a sampling treatment module used for collecting a load voltage signal of the anaesthesia machine, and comparing the load voltage signal with a first preset reference voltage signal to output a load voltage signal with amplified errors; a power setting module used for comparing the load voltage signal with amplified errors with a second preset reference voltage signal to output a control voltage signal; and a dynamic detecting module used for controlling a power switch tube of the load control module to connect when the control voltage signal is a high level, delaying a preset time when the control voltage signal is a low level, and controlling the power switch tube of the load control module to disconnect when the control voltage signal is a low level after the preset time. The protection apparatus possesses a dynamic monitoring function, and can set circuit power, motion time and protection current.

Description

technical field [0001] The invention relates to the technical field of electronic medical devices, in particular to a protection device for an anesthesia machine and an anesthesia machine equipped with it. Background technique [0002] As the standards in the medical field become more and more stringent, the requirements for the safety design of medical electronic devices are also increasing, especially the safety when used in special environments. For example, when an anesthesia machine product used in intensive care is used in an oxygen-enriched environment, the power consumed by the circuit module cannot exceed a certain amount. [0003] Faced with this requirement, the monitoring and protection of the load size of the functional modules need to be considered in the circuit design. At present, one-time insurance and recoverable insurance are mainly used to achieve this, but there are the following disadvantages: [0004] (1) Both one-time insurance and recoverable insur...

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Problems solved by technology

[0004] (1) Both one-time insurance and recoverable insurance have the problems of large operating current and slow operating time, and it is difficult to deal with the situation of excessive instantaneous power in a short period of time;

[0005] (2) If a one-time insurance is used, it needs to be replaced once it is overloaded, and it cannot be reused;

[0006] (3) Recoverable insurance is also affected by temperature differences

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