When doctors perform a series of tests for patients, they usually need to use a variety of equipment, among which the medical electrocardiogram machine is a commonly used medical equipment. This kind of equipment is not only cheaper, but also very convenient to operate, plus higher accuracy, safe and reliable to use and other characteristics, so in the medical field, this product has become a very popular equipment, so affordable medical electrocardiogram machine is mainly composed of which several parts?

1. Input circuit

Input circuit is the electrocardiogram (ecg) and a very important part of, its specific and can be divided into the guide wire and electrode, lead portfolio selection switch, filter protection circuit, and these different components to assume the role of is also different, especially the filter protection circuit can rise the filter does not need the high frequency signal and to reduce the effect of high frequency interference, The lead selector switch can lead signals from various parts of the body to the preamplifier.

2, ecg amplification circuit

Ecg amplifying circuit is the core component of ecg machine, can amplify ecg signal, and can promote the work of recorder, ecg amplifying circuit is mainly composed of preamplifier, power amplifier, voltage amplifier and the corresponding auxiliary circuit. The preamplifier can solve the problem of man-machine interface, and the voltage amplifier and the isolation circuit can better avoid and suppress the electromagnetic interference phenomenon.

Third, ecg recorder and motor paper circuit

Ecg recorder can convert ecg signal into mechanical motion. It is mainly composed of two parts: recorder head and tracing pen. Ecg curve changing with time can be traced on the recording paper. The use of electrograph machine and ecg waveform recording requires the use of corresponding recording paper, and the recording pointer is also called the motor, prevent the circuit can record the time of the ecg waveform and the response waveform.

From this perspective, medical electrocardiogram machine is composed of several parts, in fact, in addition to the above several important component, is describing the power circuit and electrocardiogram machine very important constituent, its can be divided into dc and ac two different ways of water pressure, these components work together, to encourage electrocardiogram machine have better use effect.Monitor manufacturer, EEG machine, Meilun