Medical ECG Collection Box for electrocardiogram monitoring

Introduction

The ECG collection box is a device capable of 24 – hour electrocardiogram monitoring. It is equipped with lead wires and a lithium – battery, and has a printing function. The working principlen of ECG collection box is as follows: The ECG module obtains weak electrocardiogram signals from the human body through the lead wires. These signals go through a series of processing steps, including input buffer digital resistor network signal weighting, lead definition, pre – amplification, high – pass filtering, and analog – to – digital conversion. Then, a digital filtering algorithm is used to remove interference. The ECG module uses a separate 4000V isolated floating – ground power supply and optoelectronic isolation. Finally, the ECG signals are transmitted to a microcomputer through a communication adaptation circuit. The microcomputer controls the working state of the ECG module according to data commands. After obtaining the ECG data, the microcomputer completes tasks such as the display, storage, printing of the electrocardiogram, data management, calculation and analysis of waveform parameters, and management of patient information. The standard configuration of the product includes a collection box, lead wires, ECG clips, ECG suction balls, and a USB connection cable. The ECG collection box is applicable to scenarios such as hospitals, clinics, nursing homes, communities, and physical examination centers.

Features

• Exquisite Design: The 12 – lead ECG collection box features a novel design, with the characteristics of light weight and small size.
• Comprehensive Functions: The ECG collection box can achieve accurate 12 – lead ECG data sampling, support 12 – lead synchronous ECG display, and has functions such as database management, report printing, PC – side data analysis, real – time collection, and Internet – based medical services.
• Flexible Wearing: There are various ways to wear the 12 – lead electrodes. Users can choose different connection methods to attach the electrodes to the human body according to their needs.
• Professional Analysis: After the ECG collection box completes data collection, on the PC side, by clicking  Analysis, the collected waveforms can be measured, edited, diagnosed, and printed, realizing synchronous ECG analysis of leads (processed by PC – side software).

Parameters

• Name: ECG Collection Box
• Power Supply: DC 5V 1A
• Maximum Traverse Printing Amplitude: Each channel should be ≥ 25mm (including the waveform crossover part)
• Input Impedance: Should be ≥ 20MΩ
• Input Loop Current: The current of each input loop should not be greater than 10nA
• Polarization Resistance Voltage: When a DC polarization voltage of ±500mV is applied, the sensitivity change range should be ±5%
• Minimum Detectable Signal: A sine signal with a 10Hz frequency and a 20μVP – P deflection should be detectable. A parallel impedance of a 51kΩ resistor and a 0.047uF capacitor is connected between the input terminal and the neutral electrode. Within the specified frequency range, the noise level converted to the input terminal is as follows: The noise level of the collection box should be ≤ 15μVP – P
• Common – Mode Rejection Ratio of the Collection Box: Should be ≥ 100dB
• Low – Frequency Characteristics: The time constant should be not less than 3.2s