An electrocardiograph is a medical device for clinical diagnosis that captures and expands the electrical activity of the patient’s heart through the use of electrodes. The recording of this activity is called an electrocardiogram (ECG), which is defined as the continuous recording of electrical impulses in the heart.
The electrocardiogram is used by doctors to determine any damage to the heart, whether abnormal heart palpitations, the size and position of the heart chambers, and the effects of drugs or devices used to control the heart (such as pacemakers) exist.
Characteristics of an electrocardiograph
Electrocardiographs are essential medical equipment in the health sector, so it is common that we find it in the different medical centers that exist. Its work is essential in the diagnosis of pathologies such as heart disease, arrhythmias and any type of anomaly of the heart or its cavities.
The function of this medical team is based on the installation of a series of electrodes on the surface of the patient’s skin at the level of the chest region and limbs. The electrode on the skin is connected to another electrode through the electrocardiograph. A galvanometer measures the current passing through the apparatus and is transmitted directly to the inscriptor to record the waves and complexes that reflect the electrical activity of the heart.
What are the parts of an electrocardiograph?
- Bioppontential amplifier: It consists of the protection circuit, calibration signal, preamplifier, insulation circuit and amplifier manager.
- Right leg circuit: This part of the electrocardiograph has the ability to generate active earth isolated from the electrical earth of the circuit in the patient’s right leg in order to reduce the voltages it receives, and consequently increase its safety. This is achieved by reducing the impedance of the ground electrode.
- Bypass selector: It consists of a module that is coupled to a biopotentials amplification system. The module ponders the contribution of each electrode through resistors, achieving the derivation of interest.
- Memory System: It is a memory where the signal is stored before being printed along with the data entered manually via a digital keyboard. A digital analog converter is used to convert the signal.
- Microcontroller: This device dominates every procedure performed by the electrocardiograph. The operator can select different operation modes with pre-programmed processes.
- Registrar: It is the device responsible for printing the signal that the electrodes pick up, that is, the result of the electrocardiogram. It uses pens and continuous thermal paper or inkjet.
Types and models of electrocardiographs
Currently there are multiple types of electrocardiographs, the simplest draw the path on a paper record tape specific for ECG and the most modern and complex perform an analysis of what they record and store it in digital format. There are 3.6 and 12 channels that have advantages over single-channel (single-channel) electrocardiographs in that they allow to compare the records of multiple leads during the same heartbeat, making interpretation much easier and increasing the accuracy of medical diagnosis. Among the different models of electrocardiographs we find:
- Single-channel electrocardiograph: these devices have as a feature that they record and print the results of the electrical activity of the heart of a single shunt per record. Its main advantage is that this equipment is extremely light and its use is quite simple.
- Multi-channel electrocardiograph: this equipment is characterized by having 3.6 or 12 channels and recording each of the 12 leads in a span of 2.5 seconds.
- Multi-channel printing: These electrocardiograph models have a similar function as the multichannel, the only difference is that they have a computer with recognition patterns that identifies normal and abnormal ECG signals.
What do we offer you in Kalstein?
Kalstein is a company MANUFACTURER of medical equipment and laboratory of the highest quality and technology, with the best prices in the market, so you can make your purchase confidently with us, knowing that you have the service and advice of a solid company and with a lot of experience in the field. In this opportunity we present our 12-channel 12-lead Electrocardiograph YR05159, this 12-channel ECG equipment is an electrocardiograph that can collect 12-lead ECG signals simultaneously and print ECG waveforms with a thermal printing system. HERE
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