User Manual for GIMA 1200G ECG Electrocardiograph

Quick guide from the manual

The GIMA 1200G ECG is a 12-channel electrocardiograph designed for hospital, research, and ambulance use. It features a high-resolution color LCD, touch screen operation, and automated ECG analysis. The device can be powered by AC or its built-in rechargeable lithium battery.

Safety Precautions

• Ensure the device is placed on a flat, stable surface and avoid strong vibrations.
• The device must be connected to a power supply with protective grounding.
• If used with a defibrillator, use only defibrillation-proof electrodes and lead cables.
• Do not use the device in the presence of flammable anesthetic gases or in hyperbaric oxygen chambers.
• Keep the device away from high-power equipment like X-ray machines or mobile phones to avoid interference.

Device Overview

Front and Side Views

The front panel includes the paper compartment cover, display screen, and button area. The side panel features the lead cable interface, USB interface for data transmission, network interface, mains power switch, input socket, and equipotential terminal.

Buttons

The control panel includes buttons for power (ON/OFF), speed adjustment (SPEED), sensitivity (SEN), filter settings (FILTER), print mode (MODE), printing (PRINT), and navigation (Direction buttons).

Installation

Recording Paper

Lift the paper compartment cover, insert the roll paper with the grid side facing downwards, and ensure it is aligned with the slot.

Power Supply

Connect the provided 3-core power cord to the input socket. The device automatically grounds when connected to a properly wired AC outlet. Use the potential equalization wire when connecting to other medical equipment.

Lead Cable and Electrode Installation

Connect the lead cable to the interface on the device. For chest electrodes (C1-C6), clean the skin with alcohol and apply conductive paste. For limb electrodes, place them on the soft skin of hands and feet after cleaning and applying conductive paste.

Operation

Main Interface

The main interface allows access to sampling, case management, system settings, and lead placement diagrams. Use the touch screen or keyboard to navigate.

Sampling

Enter the sampling interface to collect and display ECG waveforms. You can switch between 1, 3, 6, and 12-lead display modes. The device supports automatic and manual printing modes.

Case Management

The device stores medical records. You can query, modify, delete, and export case information via the USB interface. Exported files can be in JPEG, BMP, aECG (HL7), or DAT formats.

Maintenance

• Battery: The device has a built-in rechargeable lithium battery. Charge it fully before use. If not used for a long period, recharge every 3 months.
• Cleaning: Clean the device with neutral detergents. Do not use alcohol-based cleaners on the lead cables. Clean the thermal print head with a soft cloth dampened with alcohol at least once a month.
• Fuse: If the fuse blows, replace it with a T1.6A L250V fuse.

Troubleshooting

• Too large interference: Check grounding, ensure electrodes are connected correctly, and verify the patient is not touching metal parts of the bed.
• Baseline drift: Ensure electrode installation is stable and the patient is not moving.
• Unclear waveform: Charge the battery, clean the printer head, or replace the thermal paper.

Automated Measurement & Interpretation

The device provides automated measurement of parameters like HR, PR-interval, P-duration, QRS-duration, and QT/QTc. It also offers automated interpretation of ECG findings, such as sinus bradycardia, tachycardia, or various myocardial infarction patterns. Note that these results should always be reviewed by a professional doctor.